When should you go to Brazil?

The wettest month of the year at 137 mm, and also the sunniest, at 212 hours of sun: the storms build in the afternoon rather than settling in. Peak prices, and the beaches at their fullest.

Hot, wet and expensive, and on weather alone a trade-off month. It's a Go now for one reason: Carnival, the biggest party on earth. Book close to a year out.

The second-wettest month by volume, but with rain on only eight days and the warmest sea of the year at 26.5°C. Crowds thin and prices ease after Carnival.

Rain drops off, the humidity lifts, and the city empties out. The start of the good stretch.

Warm, drier, comfortable. Christ the Redeemer and Sugarloaf without the haze.

Winter begins: dry, with highs near 27°C and 43 mm of rain in the month. Clear skies for the views.

The peak: 41.9 mm on four rain days, the driest month of the year and the fewest wet days in it, with 189 hours of sun and humidity at its annual low of 77 percent. The clearest month of the year for Christ the Redeemer and Sugarloaf. Cool sea, perfect city weather.

A hair behind July on every count: 44.5 mm on five rain days, 185 hours of sun, the same 77 percent humidity, and half a degree warmer. A strong month for the hikes and the lookouts.

Spring: warming up, a little more rain, and the least sunny month of the year. Still pleasant and uncrowded.

Warm and lively, with showers starting to build toward summer.

Warm with more rain. Prices are still sane before the December rush.

Hot and rainy at 134 mm on eleven days, and at peak holiday prices. Réveillon is the exception: 2.6 million people in white on Copacabana for the midnight fireworks, the largest New Year's party in the world.

One of the two wettest months, with heavy afternoon storms. Fine for museums and restaurants, less so for walking.

Hottest days of the year and still very wet.

Rain easing, temperatures easing. A workable month.

Rain drops sharply and the air cools. A good month for the city on foot.

Cool nights, moderate rain, pleasant days.

Winter: cool, dry, sunny. The city at its most walkable.

The coldest month, with mornings around 13°C. Dry, sunny, and the peak of Brazilian school holidays. Pack a jacket.

The peak: 20.3 mm on four rain days, the driest month by a wide margin, against 48.4 mm in July, the next driest. Still cool, warming through the month, and the best time to walk the city.

Spring begins with a little more rain, still comfortable.

Warm with rain building. Still fine for a city stay.

Warm and increasingly wet, but not yet summer.

Hot, rainy summer sets in. The city empties for the holidays, which some people prefer.

One of the two wettest months of the year. Warm sea, cobbled streets that flood, and summer crowds.

Still very wet and hot. Warm water for swimming, and Carnival in the old town.

Rain still heavy, crowds thinning after Carnival.

Rain drops sharply. Warm days, the schooner trips run, and the town is calmer.

Much drier and comfortable. Cool evenings start.

Winter: low rain, cool nights, and clear light on the cobbles.

The coldest month of the year, dry and bright, and the week FLIP takes over the whole town. Ideal for the town, cool for the sea.

The peak: the driest month at both nearby stations, 74.4 mm at Ubatuba and 54.0 at Angra, on eight rain days, and warming back up from July. The best month for the long trails.

Rain more than doubles from August, but the days are warm and the town is quiet.

Warmer, wetter, still good for the beaches and the bay.

Warm with rain climbing toward summer. Prices still reasonable.

Hot, wet summer begins and the town fills for the holidays.

The second-wettest month, hot and humid, and the island at its most crowded after New Year's.

The hottest month. Rainy, busy, and Carnival often falls here.

A local favorite: still warm and swimmable, but the rain and the crowds have eased and prices drop.

Warm, drying out, fewer people. Good for both the trails and the beaches.

Warm and increasingly dry, with few visitors.

Winter begins: drier, cooler, and quiet. Good for the long trails.

Cool and reliably clear, but Brazilian winter holidays make it the busiest, priciest stretch of the year for boats and beds.

The peak: 54.0 mm on seven rain days, the driest month of the year and about a fifth of December's 258 mm. The best hiking window.

Warming, with the rain starting to return, and shoulder-season prices still holding.

Moderate rain, warming toward summer, a good balance.

Warm with rain building, still calm before December.

The wettest month of the year. Quiet and hot until about the 20th, then the island fills completely — book boats and rooms early.

Hot and bright, 104 mm on eight rain days with 234 hours of sun, and peak Brazilian summer. The sea is warm, with the caveat that a northeast blow can turn it cold for a few days at any point in this stretch.

The peak. The sunniest month of the year at 237 hours and the hottest at 32.2°C, on 61 mm across six rain days, which is dry for high summer here. The sea is in its warm half and Carnival falls in it.

The warmest sea of the year, and the wettest of the three summer months at 109 mm across eight days. Still 30.9°C with 218 hours of sun.

Mild and bright, 65 mm on six rain days with 213 hours of sun and days still at 29.4°C. The water is still warm and the summer weather is holding.

27.0°C and 195 hours of sun on 75 mm. The sea begins to cool and the evenings drop to 19.3°C.

One of the two driest months of the year, 41 mm on five rain days. Cool evenings at 18.3°C, and swimming is for the hardy.

The coolest month, 26.0°C by day and 17.8°C at night, dry and breezy. Walking weather rather than swimming weather.

The driest month of the year at 35 mm on five rain days, with 210 hours of sun. Bright, quiet and cool.

The coldest sea of the year, and one of the two grayest months at 177 hours of sun.

Still in the upwelling stretch, 185 hours of sun and cold water, in a month that looks like spring on land.

The most rain days of any month, ten, 112 mm of rain, and the fewest hours of sun at 175. The sea is on its way back up.

Hot again at 30.3°C, but 112 mm across nine rain days, the second wettest month of the year. The Brazilian summer holidays start late in the month.

The wettest month at Brumadinho and a close second in the city, 331 mm on fifteen rain days, with highs of 28.7°C. A month for the city’s museums and restaurants rather than a day in the gardens.

About half January’s rain, 178 mm on ten days, and the hottest afternoons of the year in the city at 29.1°C. Still the wet season.

Still wet at 198 mm on eleven rain days, and still warm at 28.4°C. The last of the rainy months.

The rain falls by more than half, to 82 mm on seven days, and the heat eases to 27.6°C. The dry stretch begins.

Dry and bright: 28 mm on three rain days, 215 hours of sun and days at 25.7°C. Comfortable for the city on foot and for the gardens at Inhotim.

Dry and mild, 11 mm on a single rain day, with highs of 24.9°C. Cool nights in the city at 15.4°C, and colder ones out toward Inhotim.

The peak: 5 mm on a single rain day, the driest month of the year, with 237 hours of sun and highs of 24.9°C. Ibirité, the weather station nearest Inhotim, averages 26°C afternoons and 10°C nights this month, so bring a layer for the morning.

Still dry, 11 mm on a single rain day, and the sunniest month of the year at 245 hours. More than a degree warmer than July at 26.3°C, with the driest air of the year at 54 percent humidity.

Warming to 27.9°C, with the first rain back, 49 mm on four days. Still a strong month for a day at Inhotim.

The rains return, 110 mm on eight days, with highs of 28.7°C. Workable, with rain on about one day in four.

The wet season is back: 236 mm with rain on fourteen days, nearly every other day, and highs of 27.7°C.

The wettest month of the year in the city, 339 mm on seventeen rain days, the most of any month. Plan a day at Inhotim around the forecast.

Hot and one of the wettest months. Afternoon storms most days.

Still hot and wet, though a little less so.

The wet tail of summer, easing. Holy Week falls in March in some years — 2027 is one — and it is the reason to pick this month in Ouro Preto: processions, and painted sawdust carpets laid on the streets overnight before Easter.

The dry season begins. Clearer, cooler, and Holy Week processions when Easter falls here.

Dry, cool, clear. The hill towns at their best.

Dry and cold at night, occasionally near frost. Bring layers for the evenings.

The peak: 15 mm, the driest month of the year, with cold nights and bright days. The Festival de Inverno runs the whole month.

Still dry, still cool at night. A strong month.

Warming up, a little rain returning. Still good.

Rain clearly returning but still workable.

Hot, humid and wet. The rainy season is properly underway.

The wettest month of the year. Lush but soaked.

Hot and one of the wettest months, with storms most afternoons. The Mostra de Cinema fills Tiradentes for nine days late in the month, and the whole program is free.

Still hot and wet, though a little less so.

The wet tail of summer, easing. Holy Week falls in March in some years — 2027 is one — and São João del-Rei’s processions date from the 18th century, with its bell-ringing registered by IPHAN as national heritage.

The dry season begins. Clearer and cooler, and the Holy Week processions in São João del-Rei when Easter falls in April.

Dry, cool, clear. The hill towns at their best.

Dry and cold at night, occasionally near frost. Bring layers for the evenings.

The peak: 11.5 mm on two rain days, the driest month of the year, with cold nights and bright days. UFSJ's Inverno Cultural fills São João del-Rei for nine days, and all of it is free.

Still dry, still cool at night. The Festival de Cultura e Gastronomia runs ten days at the end of the month in Tiradentes, most of it free.

Warming up, a little rain returning. Still good.

Rain clearly returning but still workable.

Hot, humid and wet. The rainy season is properly underway.

The wettest month of the year. Lush but soaked.

Among the driest months, hot and bright. Peak beach season, and the run-up to Carnival.

On weather alone a good month, hot and fairly dry. Carnival makes it a Go now: the biggest street party in the country, with no stadium and no tickets.

Rain climbing as the wet season approaches. Still hot.

One of the two heaviest rain months. Expect real downpours, not passing showers.

The single wettest month of the year.

Rain easing but still substantial. Festa Junina fills the state with bonfires and forró.

Rain continuing to ease, with nights around 21°C, as cool as Salvador gets. Festa Junina spills into early July.

The tail of the rains. Warm, showery, quieter.

The dry season resumes. Warm, bright, uncrowded.

The peak for conditions: 91.0 mm on eight rain days and 226.6 hours of sun, second only to January, and clear of the April-to-July rains in both directions.

A touch more rain, still comfortable and hot.

Among the driest months of the year. Hot and quiet until about the 20th, then the holidays and Réveillon arrive.

Hot, bright and well inside the dry season. Peak beach season, and the village is full.

Hot and fairly dry. Carnival empties the island toward Salvador and fills it again straight after.

Rain climbing as the wet season approaches. Still hot.

The wet season sets in: rain on about sixteen days, and the sea starting to turn unreliable for the crossing.

The wettest month of the year, and the sea often too rough for the direct crossing. The catamaran is usually rerouted the long way through Itaparica and Valença rather than canceled, which adds about an hour.

Still deep in the rains, and the sea is still unreliable. Festa Junina fills the coast with bonfires and forró.

Rain beginning to ease, and busy anyway with Brazilian school holidays. The crossing is still the thing that can go wrong.

The tail of the rains. Warm, quiet, cheap, and the last month the crossing is regularly rerouted.

The dry season resumes. Warm, bright, uncrowded, and the boats run.

The peak: 91.0 mm at Salvador and 85.8 at Camaçari, on eight and seven rain days, with 227 and 209 hours of sun. Warm, bright, and the crossing is reliable again.

A touch more rain, still hot and comfortable.

Among the driest months of the year. Dry and hot, and quiet until about the 20th — then Réveillon takes over the island.

The sunniest month of the year at both coastal stations, 241 and 251 hours, and among the drier ones at about 100 mm. It is also the fullest and the priciest: this is Brazilian summer.

The driest month at Porto Seguro’s own station, about 75 mm on nine rain days, the fewest of the year, and as hot as the year gets at 31°C, with the sea near its warmest at about 27°C. Carnival falls in February in most years, so Porto Seguro is loud, Trancoso is expensive, and both are booked.

Wetter at about 165 mm, but still summer-warm at 30.7°C and the holiday crowds have gone. One of the better trades on this coast.

One of the two wettest months of the year at both coastal stations, about 180 mm. Warm, green, cheap and empty.

About 150 mm, and the cooling starts. Quiet, and the quiet is the reason to come.

The coolest stretch opens, with days around 27°C, which is as cool as southern Bahia gets. Rain lands in the middle of the pack.

Cool by local standards and quiet, on about 145 mm, with the most rain days of the year at the town’s own station, seventeen. Still not the washout the English-language tables make of it: November is the wettest month by a distance.

About 105 mm, in the coolest stretch of the year with days around 26°C, and the coolest sea of the year at about 25°C.

About 105 mm on twelve rain days, a degree warmer than August at around 27°C, and quiet before the summer.

About 130 mm and warming, and still well before the summer rush.

The wettest month of the year at the coastal station south of here, at 214 mm, and about 190 mm between the two. Warm and very quiet.

Hot, about 140 mm, and the last quiet weeks of the year. Both towns fill from about the 20th.

Hot and mostly dry, with the whole city warming up for Carnival at weekend street previews. Peak-season prices.

Hot, humid and fully booked, and on weather alone merely good. Go now for Carnival: the Galo da Madrugada in Recife, Olinda's giant puppets on the hill, and frevo everywhere.

Still summer-warm and the crowds have gone home, but the rain is ramping up. Fine for beaches, cheaper than February.

The rainy season sets in: showers most days, gray skies, but a warm sea and low prices.

Deep rainy season. Cheap and quiet; expect several wet days a week and murkier water.

The wettest month on the coast. São João in Caruaru, inland, is one of Brazil's biggest parties if forró is your thing.

Still rainy and windy on the coast, and Brazilian winter break fills hotels anyway. Garanhuns's winter festival is inland.

Rain eases sharply through the month, from 315 mm to 187 mm, and prices fall — but there is still rain on nineteen days.

The dry season arrives: sun most days, prices still low, and Olinda hosts the free MIMO music festival.

Dry, sunny, warm, uncrowded. The sweet spot for beaches and the natural pools before summer prices.

The peak for conditions: 39.0 mm on seven rain days, the driest month of the year and one of the sunniest.

Dry and hot. Réveillon on Boa Viagem is a huge free beach party. Prices jump after Christmas.

Hot and mostly dry at 108 mm on eleven days, and the resort strip at peak-season prices.

Hot and still dry. The town empties toward Recife and Olinda for Carnival and fills again straight after.

Still summer-warm and much cheaper than February, but the rain is ramping up: 194 mm on fifteen days, against 130 mm in February.

The rainy season sets in: showers most days, and the first jangada trips get called off.

Deep rainy season, 289 mm on nineteen rain days. The rain can run for days rather than passing in bursts.

The wettest month on this coast, 321 mm on twenty-two rain days. Cheap and quiet, and the tide table is the only thing that will hand you a good pool day.

The most rainy days of any month. Brazilian winter break fills the pousadas anyway.

Rain eases through the month and prices fall, but there is still rain on about nineteen days, the same count as May.

The dry season arrives: 105 mm on twelve days, down from 191 mm in August. Sun most days, and prices still low.

Dry and calm at 59 mm on nine days, with the crowds still away. Second only to November.

The peak: 48 mm at Ipojuca and 39.0 at Recife, the driest month of the year, on seven rain days.

Dry and hot. Quiet until about the 20th, then the holiday crowd arrives and prices jump.

Hot and dry, with rain on nine days and a calm sea. Peak summer prices.

The second-fewest rainy days of any month, seven, and hot. Carnival pulls the crowds north to Recife and Olinda and south to Salvador.

The hottest month of the year at 31.5°C, and the rain starting to build. The Carnival crowds have gone.

The wet season sets in: 208 mm across sixteen days, and the Maragogi boats start getting weather-dependent.

Deep wet season, 297 mm across eighteen rain days. Cheap and quiet, and the Maragogi boats turn weather-dependent.

The wettest month of the year at 354 mm, and the least sunny. São João fills Alagoas with bonfires and forró.

The most rainy days of any month, twenty-three, and the coolest, with highs around 28°C. Brazilian winter break fills the hotels anyway.

The tail of the rains, easing to 202 mm but still twenty rainy days.

The rains break. Rain on about thirteen days, the sea settling, and low-season prices.

Dry, warm and calm, with rain on seven days. The reef pools come back into their own.

The peak: 46.9 mm on five rain days, the fewest of any month of the year.

The driest and sunniest month of the year. Hot and clear, and quiet until about the 20th, when the holiday crowd and the prices arrive.

Hot and dry, 81 mm on seven rain days with 256 hours of sun. Brazilian summer holidays fill Ponta Negra and Pipa.

Still in the dry half of the year, 100 mm on eight rain days, and the last easy month before the rains.

The rains arrive, 201 mm across thirteen days. Days are still 30.7°C and the summer crowd has gone.

Wet season proper, 241 mm across sixteen rain days, and the lightest wind of the year at 3.5 m/s. The month most likely to keep you off the sand.

Still wet, 222 mm across fifteen rain days, and still 29.8°C.

The wettest month of the year at 349 mm across eighteen rain days, and the least sunny at 199 hours. Festa Junina fills the whole Northeast with bonfires and forró.

254 mm across sixteen rain days, and the Brazilian winter break fills the hotels anyway.

The hinge: rain drops by more than half to 119 mm and the sun climbs back to 254 hours, but it still falls on twelve days. The trade wind picks up to 4.7 m/s.

The dry season resumes, 54 mm across eight rain days with 267 hours of sun, and the windiest month of the year at 5.1 m/s.

The peak, and it is not close: the driest month of the year at 20.6 mm on five rain days, and the sunniest at 295 hours. Hot, bright and still windy. At Pipa, pick a day whose low tide falls in daylight and walk around to the dolphins.

The fewest rain days of any month, four, with 286 hours of sun.

Dry and hot, 29 mm on five rain days. The Brazilian summer holidays start late in the month.

Hot, low rain, warm sea, and turtle hatchlings reaching the beach most evenings.

Hot with some showers. Hatchlings most evenings at the TAMAR project.

Rain building. Still hot, still swimmable.

Heavy rain begins in earnest.

The wettest month of the year.

Still very wet, a little cooler.

Less rain by volume than June, but just as many rainy days: frequent short showers.

The tail of the wet stretch. Cooler nights, humpback whales offshore.

The rains are over. Turtle nesting season begins, and the whales are still passing.

The peak: 85.8 mm on seven rain days and 209 hours of sun, second only to January, and the one month when the humpbacks are still offshore and the turtles have already started nesting.

Hot, with a little more rain than October, and both nesting turtles and hatchlings on the beach.

The driest month of the year, hot, and the start of peak beach season, with the prices to match.

The rains start. Roads begin to deteriorate and the lagoons have barely begun to fill.

Rainy season. Lagoons filling but far from full.

The wettest month of the year, with rain on about twenty days. Not the month for this trip.

Nearly as wet as March, but the lagoons are visibly filling.

The tail of the rains. Lagoons close to full and the crowds not yet here. A gamble that often pays.

The dry season begins at 69 mm and the lagoons are full. The start of the window.

Dry at 27 mm and the lagoons full, but this is the busiest and priciest month of the year with Brazilian school holidays.

The peak: 5.9 mm on a single rain day and 305 hours of sun, the sunniest month of the year, with the lagoons still holding.

Effectively rainless, and the lagoons still hold. The last reliable month.

Lagoons receding for most visitors. Some years they last into October, most years they do not.

Dry, and the lagoons shrinking fast.

Lagoons at their lowest, just before the January rains restart the cycle.

The wet season at full strength, 303 mm on seventeen rain days, the wettest month at Carolina on the 1991-2020 record. The rivers are rising toward their peak in March and April.

Still fully wet, 289 mm on seventeen rain days, and the waterfalls filling fast.

Level with January at 293 mm, on eighteen rain days, the most of any month. The waterfalls run at their fullest from March into April.

The rains easing to 206 mm on thirteen days, the waterfalls still close to full, and the heat starting to build at 32.1°C.

The rain more than halves, to 92 mm on seven days, and the dry season starts. The waterfalls still carry about half their March flow, which makes this a good compromise month.

The peak: 13 mm on a single rain day, 286 hours of sun, and at 33.9°C the mildest afternoons between June and September. The waterfalls are past their best but still running at more than a third of their March flow.

The sunniest month of the year at 307 hours, and effectively rainless at 7 mm on a single rain day. Hotter afternoons at 35.0°C, but the coolest nights of the year at 20.4°C.

The hottest month of the year at 36.4°C, with the driest air, 48 percent humidity, on 9 mm of rain. The waterfalls are close to their lowest. Start early and stay out of the middle of the day.

As hot as August at 36.3°C, the waterfalls at their lowest of the year, and the peak of the fire season: INPE’s satellites detect more fires in the municipalities around the park in September than in any other month. The first rains come in the second half.

The rains return, 117 mm on eight days, and the fires carry on: inside the park itself, October has the most fire detections of any month.

The rainy season building, 174 mm on ten days, and the waterfalls starting to fill again.

Fully into the rains, 231 mm on thirteen days, with the rivers rising toward their March peak.

Rainy season starting, hot, wind fading.

Rain increasing.

Among the heaviest rain months.

One of the two wettest months of the year.

Rain easing but still substantial.

Rain drops sharply and the wind starts to build.

Dry, hot, and the reliable wind season begins.

One of the driest months. Strong, steady wind.

Effectively rainless, and the start of peak wind season.

The peak: 2.1 mm of rain, 305 hours of sun and the steadiest wind of the year. Driest, sunniest and windiest, all in the same month.

Dry, hot, the tail of peak wind season.

Still dry and windy, and busy over the holidays.

The rains are arriving and the wind is fading. Hot, and busy with Brazilian summer holidays.

Rainy season, and among the least sunny months of the year.

One of the two heaviest rain months.

The wettest month of the year, and the least sunny.

The tail of the rains: easing, but still substantial.

Rain drops by nearly half from May, and Festa Junina fills the state.

The dry season opens and the trade wind starts to build. Brazilian winter holidays fill the beaches.

Effectively dry — rain on three days in the month — with the July crowds gone and the wind steady.

Almost no rain, close to ten hours of sun a day, and the wind at its most reliable.

The peak: 9.5 mm and 294 hours of sun, the driest and the sunniest month of the year, with the trade wind at its strongest.

As dry as October, still at low-season prices, and the last month before the holidays.

Still dry and windy, and busy over the holidays.

Deep in the rainy season. Waterfalls thunder; trails are muddy and some close.

Rainy, but usually in short bursts rather than all-day rain.

The wettest month of the year. Waterfalls still full.

Rain easing toward the dry season. A good compromise month.

The dry season begins. Trails safe and comfortable.

Dry, with cool nights at altitude. A jacket is needed in the valleys.

The peak: 41.5 mm, and the coolest month of the year at a 21.3°C mean with nights at 16.6°C. On a long day in the sun, that is what decides the walk.

Dry and excellent for walking.

Dry, and the rivers and pools still hold good water.

Hot, and the turn toward the rains. Still modest rainfall.

The rains settle back in.

Heavy rain, and the waterfalls and pools at their most dramatic.

The tail of the dry season, hot, and the surf running. Busy over the holidays.

The rainy season begins.

Rain building fast.

The wettest month of the year.

Still very wet, though diving visibility often holds.

Still wet, and the rain only just starting to ease.

The transition to the dry season. Surf swells have gone quiet.

Dry season and the start of peak diving visibility.

One of the driest months. Superb visibility underwater.

The best month of the year: 9.5 mm on three rain days and 285 hours of sun, the sunniest month, and no swell on the mar de dentro to stir the visibility up.

The driest month on paper, 9.3 mm on two days, and ahead of the holiday pricing. Sources split on the diving: one Brazilian reference calls the water crystalline and the conditions excellent in November, another dates the swell that stirs up the mar de dentro from November rather than December.

Dry, 10.4 mm on two rain days, and the swell arrives at Cacimba do Padre. Good if you surf, but the same swell cuts the underwater visibility the island is known for, and it is the most expensive fortnight of the year.

The wet season at full strength and the river climbing fast. Green, dramatic and very quiet, but expect to get wet daily.

High water begins, and the rain is still heavy at 297 mm. Quiet on the river, and green.

Deep in the flooded season. Canoes run far into the flooded forest, over ground you could walk in September.

The wettest month of the year by rainfall at 331 mm, and the river still climbing hard. Strong for boat-based exploring and for birds, a step below June.

The river holds high, the rain starts easing, and the forest is at its greenest.

The first peak, for high water: the Negro at Manaus tops out in June in most years, and the rain is already down to 117 mm. Flooded forest by canoe, without the rain.

Dry, warm and bright. Trails open as the water falls. Brazilian holidays fill the lodges, so book ahead.

The driest stretch. River beaches appear and wildlife concentrates along the banks.

The second peak, for low water: 79 mm on six rain days, trails open, wildlife packed onto the banks and far fewer mosquitoes. The opposite trip to June's.

Still low and dry, and the Rio Negro beaches are at their widest.

Low water ending. The rain returns in the second half of the month.

The wet season sets in and the river starts climbing. Hot, humid and heavily green.

The rains are back in force, 222 mm on fifteen days, and the river climbing more than a meter over the month.

Heavy rain, 252 mm on seventeen days, and the river still rising by more than a meter a month.

The wettest month of the year, 326 mm with rain on twenty days, and the river still rising.

Still very wet, 300 mm on nineteen days, with the river nearing its peak.

The river at its highest of the year, and still wet at 242 mm on eighteen days.

The rain drops to 139 mm on fourteen days, but the river holds close to its May high.

Drier, 101 mm on eleven days, and the river starts to fall, but it is still within a meter of its peak at the end of the month.

Dry, and the sunniest month of the year at 251 hours, on 48 mm and six rain days. The river drops about a meter, but it is still closer to its May high than to its low.

The driest month of the year, 33 mm on four rain days, and the river falling faster than in any other month, almost two meters from the first to the last. The Festa do Sairé fills the village in the third week of the month.

The peak: the fewest rain days of the year, three, on 54 mm, with 221 hours of sun and the hottest afternoons at 32.9°C. The river drops another 1.3 meters, and by the end of the month it is down at its annual low.

The river at its lowest in most years, but the rain picks up to 74 mm on five days, and INPE’s satellites record more fires in Santarém and Belterra in November than in any other month.

The rain returns at 89 mm on eight days and the river turns, climbing about a meter through the month, so early December sits lower than late.

Deep in the wet season. Heavy rain most days.

Among the wettest months.

The wettest month of the year.

Still very wet.

Rain beginning to ease. A transition month.

The dry season begins and the rain drops off.

Rain continues to fall away.

One of the driest months.

Often the single driest month.

The peak: 136 mm against September's 120, a gap inside the noise in a city that takes 506 mm in March, so the Círio de Nazaré breaks a tie between two equal months rather than overruling a better one. Two million people process through the city, one of the largest religious gatherings on earth.

Still dry, and the last month of the good stretch.

Rain roughly doubles as the wet season returns.

The wettest month of the year, with rain on twelve to fourteen days. Roads flood and wildlife scatters across the plain.

Still fully wet. Birdlife and spectacular skies, but few mammals visible from roads or boats.

Still fully wet and the water near its peak. Green, hot and hard to move around in.

A transition month: rain easing and the roads in the north drying out.

The dry season begins. Roads improving, water receding, animals returning to the rivers.

Dry, with the mildest days of the year. Jaguar season getting underway in the north.

The peak: 23.1 mm at Corumbá and 16.5 at Cáceres, on two rain days and one, and the sunniest month of the year at both, 236 and 221 hours. Water limited to the riverbeds, the wildlife packed around it, and the mildest afternoons of the dry season.

Still the heart of the dry season, 26.9 mm at Corumbá and 20.8 at Cáceres on two rain days, with the water low and the wildlife on it. The heat is building: afternoons run 30.5 and 33.1°C against July's 28.6 and 31.1.

Dry season holds. Excellent access, and the heat starting to build.

Late dry season, still good, getting hot. Jaguar season runs to the end of the month.

The rains return and the wetland starts to fill. Still hot, and the wildlife disperses.

Wet season resuming, roads starting to flood.

One of the two wettest months at 230 mm, hot, and the rivers carrying run-off.

Hot and rainy, water clarity still reduced.

The tail of the wet season. Rivers clearing slowly.

The dry season begins and the water clears.

Cooling, drying, clearer rivers.

Core dry season: 47.4 mm at Campo Grande on four rain days. Cool, and the rivers running low and clean.

The peak: the driest and the coolest month at both nearby stations, 35.7 mm and 15.3°C at Campo Grande, 52.3 mm and 11.7°C at Ponta Porã. Rain is what puts sediment in these rivers, and July has the least of it.

Dry, clear water, comfortable temperatures.

The last of the dry season, 77.6 mm, and the rivers still running low.

The wet season resumes and sediment builds.

Hotter, wetter, rivers increasingly cloudy.

The wettest month of the year at 238 mm, with strong waterfalls and the most run-off of the year in the rivers. From about 15 December the morning sun reaches the lake inside the Gruta do Lago Azul.

Rain on about 16 days, 196 mm at Alto Paraíso, and the Rio Preto at its highest flow of the year, so the falls are at their fullest.

Still the rainy season, 185 mm on about 14 days, with the falls running close to their January peak.

The wettest month at Alto Paraíso, 228 mm on about 17 days, and the falls still full.

The rains ease to 101 mm on about 10 days, and the falls still carry close to half their January water.

The dry season opens: 36 mm on about 4 days, warm afternoons near 26°C, and the falls down to about a sixth of their peak.

Dry, 6 mm in a typical June, with nights down to about 13°C. The falls carry half again as much water as in July.

The peak: effectively rainless at 0.2 mm, clear sunny skies on about 28 days, and the coolest nights of the year at 12.7°C. The falls are down to about a twentieth of their January flow, so this is the month for hiking and views rather than torrents.

Still dry at 4 mm and warming to 27°C, with the falls near their lowest and very dry air: daytime humidity averages 34 percent.

The hottest month at 29.5°C, the driest air of the year, the falls at their lowest, and the most fire detections inside the park of any month.

The rains return, 117 mm on about 10 days, still hot at 29°C, and the second-busiest month for fires in the park.

Fully rainy again, 197 mm on about 15 days, and the falls filling: the Rio Preto runs at three times its October flow.

214 mm on about 17 days, the second-wettest month, and the falls back near full.

The rainy season, 206 mm on 16 days.

Still the rainy season, 180 mm on 14 days.

226 mm on 15 days, the wettest month of the first half of the year.

The rains ease to 145 mm on 9 days, with 201 hours of sun.

The dry season begins: 27 mm on 3 days and 238 hours of sun.

Dry, 3 mm on a single day, with the coolest afternoons of the year at 25°C and mornings around 14°C.

The peak: 1.5 mm and no rain days on the 1991-2020 normals, 268 hours of sun, and the coolest mornings of the year at 13.9°C.