Climate and average weather in São Miguel do Araguaia

In São Miguel do Araguaia, 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: late April to early August

Over the course of the year, the temperature in São Miguel do Araguaia typically varies from 20°C to 36°C, and is rarely below 18°C or above 39°C. September is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit São Miguel do Araguaia for warm-weather activities is from late April to early August.

Hottest
Sep
36°
Coldest
Jan
23°
Wettest
Jan
307 mm
Driest
Jul
0 mm
Rain / yr
1589 mm
165 wet days
Daylight
11.2–12.8 h
shortest–longest
Elevation
336 m
13.3°S
Clearest
Jul
26% cloud

São Miguel do Araguaia is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

São Miguel do Araguaia 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 late April to early August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in São Miguel do Araguaia stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 36°C and low of 24°C; the coolest is January, with an average low of 23°C and high of 31°C.

Days typically run about 10°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)
Jan3123
Feb3123
Mar3123
Apr3223
May3322
Jun3321
Jul3320
Aug3522
Sep3624
Oct3424
Nov3223
Dec3123

How hot and cold São Miguel do Araguaia 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, São Miguel do Araguaia feels like about 37°C (around October 4). Nearly every day a year carries some heat stress, peaking in October.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan34312323
Feb35312323
Mar35312323
Apr36322323
May35332222
Jun33332121
Jul33332020
Aug35352222
Sep36362424
Oct37342424
Nov35322323
Dec35312323

Average hourly temperature in São Miguel do Araguaia

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 September afternoons, near 36°C, and coldest before dawn in January, near 23°C.

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

São Miguel do Araguaia 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
Jan31° / 23°30726.612.72.9
Feb31° / 23°24923.912.42.8
Mar31° / 23°24025.412.12.9
Apr32° / 23°12716.711.73.4
May33° / 22°213.811.44.3
Jun33° / 21°20.311.24.6
Jul33° / 20°0011.34.5
Aug35° / 22°20.411.63.3
Sep36° / 24°223.711.92.3
Oct34° / 24°11615.712.32.5
Nov32° / 23°23722.812.62.8
Dec31° / 23°26825.412.82.9

Chance of rain

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

São Miguel do Araguaia gets about 1589 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 6.3 months, from around Oct 13 to Apr 21, peaking in January at about 86% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 24.

January is the wettest month by volume, with 307 mm over about 27 wet days; July is the driest, with 0 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 7 · 86%Jun 24 · 0%
Rain on a day (%)Rain days
Jan8527
Feb8524
Mar8225
Apr5517
May134
Jun10
Jul00
Aug20
Sep144
Oct5016
Nov7623
Dec8225

Monthly rainfall

Over a full year, São Miguel do Araguaia collects about 1589 mm of rain across 165 wet days — roughly 132 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 307 mm, while July is the driest at just 0 mm. The three wettest months alone bring about 52% of the year’s total.

050100150200250300350JanFebMarAprMayJunJulAugSepOctNovDec3072492401272120222116237268
Rainfall (mm)Rain days
Jan30727
Feb24924
Mar24025
Apr12717
May214
Jun20
Jul00
Aug20
Sep224
Oct11616
Nov23723
Dec26825

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In São Miguel do Araguaia, 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 April 19 and lasts for 5.8 months, ending around October 11. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 87% of the time on average.

The cloudier part of the year begins around October 12 and lasts for 6.2 months, ending around April 18. The cloudiest month is January, when it is overcast or mostly cloudy 82% 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 27 · 88%Dec 2 · 17%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan1882
Feb2080
Mar2377
Apr4654
May6634
Jun8119
Jul8713
Aug8614
Sep7327
Oct4456
Nov2278
Dec1981

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 48 min of light; the shortest, around June 7, only 11 h 12 min — a swing of roughly 1 h 36 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.77:097:51
Feb12.47:227:48
Mar12.17:287:33
Apr11.77:307:12
May11.47:356:59
Jun11.27:446:58
Jul11.37:487:05
Aug11.67:387:11
Sep11.97:177:13
Oct12.36:577:15
Nov12.66:477:25
Dec12.86:537:40

Sunny days

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

São Miguel do Araguaia averages about 10 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 23 days.

The sunnier stretch runs 5.4 months, from around Apr 22 to Oct 3. The sunniest month is August, with roughly 21 sunny days (bright).

The greyest month is December, down near 2 sunny days — about 90% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 123 daysDec 22 days
Sunny daysSky
Jan3Gloomy
Feb2Gloomy
Mar3Gloomy
Apr9Mixed
May15Mixed
Jun20Bright
Jul22Bright
Aug22Bright
Sep15Bright
Oct8Gloomy
Nov2Gloomy
Dec2Gloomy

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 São Miguel do Araguaia, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 8.2 months, from around September 30 to June 7. 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 8 to September 29, and August is the most comfortable month — the air is dry or comfortable 84% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 5 · 88%Jan 1 · 0%humidoppressivemuggycomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan0004933
Feb0002944
Mar0002925
Apr00117783
May052346260
Jun335471410
Jul215721100
Aug424213300
Sep28241918100
Oct271327510
Nov00110872
Dec0003943

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 São Miguel do Araguaia is typically calm, near 6 km/h, and varies little with the seasons.

The windier part of the year lasts 5.0 months, from around May 16 to Oct 14. The windiest month is August, averaging about 9 km/h (calm).

The calmer part of the year runs from around Oct 15 to May 15, with March the calmest month at about 5 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeAug 21 · 9 km/hMar 18 · 5 km/h
Wind speed (km/h)Feels
Jan6calm
Feb5calm
Mar5calm
Apr5calm
May6calm
Jun7calm
Jul8calm
Aug9calm
Sep8calm
Oct6calm
Nov5calm
Dec5calm

Hazard calendar for São Miguel do Araguaia

In seasonPeak

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

São Miguel do Araguaia's monsoon runs November–March, 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 São Miguel do Araguaia

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early May, São Miguel do Araguaia is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

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 São Miguel do Araguaia for general outdoor tourist activities is from late April to early August, with a peak score in the last week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 25 · 4.7

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
Feb2.8poor
Mar2.8poor
Apr3.5poor
May4.3fair
Jun4.6fair
Jul4.5fair
Aug3.3poor
Sep2.3poor
Oct2.5poor
Nov2.8poor
Dec2.9poor

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 São Miguel do Araguaia for hot-weather activities is from late April to late August, with a peak score in the first week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 4 · 8.2

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 São Miguel do Araguaia, 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.

São Miguel do Araguaia packs about the same all year — highs hold near 36°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 September, São Miguel do Araguaia sees daytime highs around 36°C and nights near 24°C. Pack light clothes and sun protection. About 4 days see rain.

UV index (midday) in São Miguel do Araguaia 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 São Miguel do Araguaia peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 15UV 15Jul 11UV 8
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct11Extreme
Nov13Extreme
Dec12Extreme

Average hourly UV index in São Miguel do Araguaia

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 6.5 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)
Jan8.57
Feb8.56.5
Mar8.56.5
Apr7.55.5
May75
Jun6.54
Jul6.54
Aug75
Sep86
Oct7.55.5
Nov86
Dec8.56.5

Air quality in São Miguel do Araguaia 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 São Miguel do Araguaia is worst in September — around 24 µg/m³ PM2.5 (moderate), about 8.8× the cleanest month (July, 3 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2123 µg/m³Jul 123 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr7Good
May5Good
Jun3Good
Jul3Good
Aug6Good
Sep24Moderate
Oct21Moderate
Nov9Good
Dec8Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

São Miguel do Araguaia 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. São Miguel do Araguaia banks about 6,372 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)
Jan516
Feb469
Mar522
Apr516
May536
Jun501
Jul516
Aug567
Sep599
Oct590
Nov520
Dec520

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.

São Miguel do Araguaia receives about 5.3 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.7 and 6.1 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseOct 86.1 kWhJun 174.7 kWh
Solar energy (kWh/m²)Level
Jan5.2Bright
Feb5.3Bright
Mar5.0Bright
Apr5.1Bright
May5.0Bright
Jun4.7Bright
Jul5.0Bright
Aug5.6Bright
Sep6.0Intense
Oct6.0Intense
Nov5.4Bright
Dec5.2Bright

Where is São Miguel do Araguaia?

São Miguel do Araguaia sits at 13.3°S, 50.2°W, 336 m above sea level, in Brazil. The nearest listed city is Porangatu, 111 km away.

Topography around São Miguel do Araguaia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Miguel do Araguaia.

Within 3 km, the terrain around São Miguel do Araguaia has only modest variations in elevation — a maximum elevation change of 88 m around an average of 340 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 214 m; within 80 km, significant variations in elevation — a maximum elevation change of 523 m.

The land around São Miguel do Araguaia is covered by grassland (60%) and trees (20%) within 3 km, grassland (70%) and trees (27%) within 16 km, and grassland (59%) and trees (32%) within 80 km.

3 km
88 m
16 km
214 m
80 km
523 m
treesshrubsgrasslandcroplandartificial surfaceswater
Nearby: Porangatu 111 km · Crixás 143 km · Uruaçu 177 km · Formoso do Araguaia 178 km · Itapaci 198 km · Gurupi 209 km · Minaçu 212 km · Rubiataba 214 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 São Miguel do Araguaia (-13.275°, -50.1628°, elevation 336 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).