Climate and average weather in Aripuanã

In Aripuanã, the weather is sweltering, wet, and mostly clear and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around January.

Best: early May to late July

Over the course of the year, the temperature in Aripuanã typically varies from 21°C to 34°C, and is rarely below 19°C or above 37°C. August is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Aripuanã for warm-weather activities is from early May to late July.

Hottest
Aug
34°
Coldest
Jan
22°
Wettest
Jan
322 mm
Driest
Jul
7 mm
Rain / yr
1983 mm
219 wet days
Daylight
11.4–12.6 h
shortest–longest
Elevation
191 m
10.2°S
Clearest
Jul
27% cloud

Aripuanã weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around early May to late July.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Aripuanã, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Aripuanã stay fairly even through the year, without a distinct hot or cool season. The warmest month is August, with an average high of 34°C and low of 22°C; the coolest is January, with an average low of 22°C and high of 29°C.

Days typically run about 9°C warmer than nights, with the widest day–night swing (around 13°C) in August.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2922
Feb2922
Mar2922
Apr3022
May3022
Jun3121
Jul3321
Aug3422
Sep3323
Oct3223
Nov3022
Dec2922

How hot and cold Aripuanã really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the hottest afternoons, once humidity is folded in, Aripuanã feels like about 36°C (around September 23). Nearly every day a year carries some heat stress, peaking in September.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan32292222
Feb33292222
Mar33292222
Apr33302222
May33302222
Jun33312121
Jul33332121
Aug35342222
Sep36332223
Oct36322323
Nov34302222
Dec33292222

Average hourly temperature in Aripuanã

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on August afternoons, near 34°C, and coldest before dawn in January, near 22°C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Aripuanã weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°32229.312.52.9
Feb29° / 22°29726.412.32.9
Mar29° / 22°28129.212.12.9
Apr30° / 22°1852511.83.2
May30° / 22°7312.911.54.6
Jun31° / 21°14311.45.2
Jul33° / 21°71.411.54.6
Aug34° / 22°173.311.73.5
Sep33° / 23°8112.611.93.2
Oct32° / 23°18022.612.23.0
Nov30° / 22°22725.312.53.0
Dec29° / 22°30028.112.63.0

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Aripuanã gets about 1983 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.

The wetter season lasts 7.0 months, from around Sep 30 to May 1, peaking in February at about 95% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 16.

January is the wettest month by volume, with 322 mm over about 29 wet days; July is the driest, with 7 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetFeb 22 · 95%Jul 16 · 4%
Rain on a day (%)Rain days
Jan9429
Feb9426
Mar9429
Apr8225
May4213
Jun113
Jul41
Aug123
Sep4113
Oct7223
Nov8525
Dec9128

Monthly rainfall

Over a full year, Aripuanã collects about 1983 mm of rain across 219 wet days — roughly 165 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 322 mm, while July is the driest at just 7 mm. The three wettest months alone bring about 46% of the year’s total.

050100150200250300350JanFebMarAprMayJunJulAugSepOctNovDec322297281185731471781180227300
Rainfall (mm)Rain days
Jan32229
Feb29726
Mar28129
Apr18525
May7313
Jun143
Jul71
Aug173
Sep8113
Oct18023
Nov22725
Dec30028

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Aripuanã, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around May 11 and lasts for 4.9 months, ending around October 6. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 88% of the time on average.

The cloudier part of the year begins around October 7 and lasts for 7.1 months, ending around May 10. The cloudiest month is February, when it is overcast or mostly cloudy 96% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJul 15 · 89%Feb 18 · 3%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan694
Feb496
Mar793
Apr1684
May4258
Jun7723
Jul8812
Aug8218
Sep5743
Oct2773
Nov1090
Dec892

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 12 h 36 min of light; the shortest, around June 1, only 11 h 24 min — a swing of roughly 1 h 12 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.56:517:23
Feb12.37:027:22
Mar12.17:057:10
Apr11.87:056:51
May11.57:086:40
Jun11.47:166:40
Jul11.57:206:47
Aug11.77:126:52
Sep11.96:546:50
Oct12.26:366:50
Nov12.56:296:57
Dec12.66:367:12

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Aripuanã averages about 7 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 23 days.

The sunnier stretch runs 4.3 months, from around May 19 to Sep 25. The sunniest month is July, with roughly 22 sunny days (bright).

The greyest month is February, down near 0 sunny days — about 99% fewer than the July peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2723 daysFeb 180 days
Sunny daysSky
Jan0Gloomy
Feb0Gloomy
Mar1Gloomy
Apr2Gloomy
May7Gloomy
Jun18Bright
Jul23Bright
Aug20Bright
Sep10Mixed
Oct3Gloomy
Nov1Gloomy
Dec1Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Aripuanã, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 9.2 months, from around September 12 to June 18. The muggiest month is January, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around June 19 to September 11, and August is the most comfortable month — the air is dry or comfortable 42% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 1 · 57%Jan 1 · 0%miserableoppressivemuggyhumidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan0000973
Feb0000964
Mar0000937
Apr0013898
May00417772
Jun082538300
Jul1132321880
Aug16262122140
Sep251324560
Oct0015914
Nov0001936
Dec0000973

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Aripuanã is typically calm, near 5 km/h, and varies little with the seasons.

The windier part of the year lasts 4.4 months, from around May 13 to Sep 23. The windiest month is July, averaging about 8 km/h (calm).

The calmer part of the year runs from around Sep 24 to May 12, with March the calmest month at about 4 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeJul 25 · 8 km/hMar 21 · 4 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar4calm
Apr5calm
May5calm
Jun7calm
Jul8calm
Aug7calm
Sep6calm
Oct5calm
Nov4calm
Dec5calm

Hazard calendar for Aripuanã

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Aripuanã's monsoon runs October–April, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Aripuanã

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Aripuanã throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid July, Aripuanã is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Aripuanã for general outdoor tourist activities is from early May to late July, with a peak score in the second week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 11 · 5.3

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan2.9poor
Feb2.9poor
Mar2.9poor
Apr3.3poor
May4.6fair
Jun5.2fair
Jul4.6fair
Aug3.6fair
Sep3.2poor
Oct3.0poor
Nov2.9poor
Dec3.0poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Aripuanã for hot-weather activities is from late May to early September, with a peak score in the first week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 6 · 8.1

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Aripuanã, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

Aripuanã packs about the same all year — highs hold near 34°C. Across the year the things worth having are light clothes, sun protection and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In August, Aripuanã sees daytime highs around 34°C and nights near 22°C. Pack light clothes. Worth having: sun protection. About 3 days see rain.

UV index (midday) in Aripuanã by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Aripuanã peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 5 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeFeb 16UV 15Sep 14UV 5
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep4Moderate
Oct11Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in Aripuanã

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in February the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan8.56.5
Feb8.57
Mar86.5
Apr86
May75
Jun74.5
Jul74.5
Aug6.53.5
Sep50
Oct7.55.5
Nov8.56.5
Dec8.56.5

Air quality in Aripuanã by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Aripuanã is worst in September — around 89 µg/m³ PM2.5 (unhealthy), about 14.4× the cleanest month (July, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0306090JanFebMarAprMayJunJulAugSepOctNovDecGoodUnhealthyModerateSep 1583 µg/m³Jul 107 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar10Good
Apr9Good
May8Good
Jun8Good
Jul6Good
Aug41Poor
Sep89Unhealthy
Oct26Moderate
Nov17Moderate
Dec12Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Aripuanã is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Aripuanã banks about 5,964 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around September.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan484
Feb438
Mar486
Apr475
May490
Jun479
Jul518
Aug554
Sep536
Oct527
Nov488
Dec489

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Aripuanã receives about 4.9 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.4 and 5.6 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseOct 45.6 kWhMar 254.4 kWh
Solar energy (kWh/m²)Level
Jan4.5Bright
Feb4.5Bright
Mar4.5Bright
Apr4.5Bright
May4.6Bright
Jun4.8Bright
Jul5.1Bright
Aug5.5Bright
Sep5.6Bright
Oct5.5Bright
Nov5.1Bright
Dec4.7Bright

Where is Aripuanã?

Aripuanã sits at 10.2°S, 59.4°W, 191 m above sea level, in Brazil. The nearest listed city is Colniza, 97 km away.

Pimenta BuenoCacoalBrasnorteJi Paraná

Topography around Aripuanã

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Aripuanã.

Within 3 km, the terrain around Aripuanã has only modest variations in elevation — a maximum elevation change of 193 m around an average of 231 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 284 m; within 80 km, significant variations in elevation — a maximum elevation change of 449 m.

The land around Aripuanã is covered by trees (53%) and grassland (29%) within 3 km, trees (65%) and grassland (32%) within 16 km, and trees (81%) within 80 km.

3 km
193 m
16 km
284 m
80 km
449 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Colniza 97 km · Juína 158 km · Espigão dOeste 227 km · Juara 243 km · Pimenta Bueno 253 km · Cacoal 259 km · Brasnorte 268 km · Ji Paraná 285 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Aripuanã (-10.1765°, -59.4491°, elevation 191 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).