Climate and average weather in São João do Soter

In São João do Soter, the weather is humid, sweltering, wet, and mostly clear and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around March.

Best: mid May to mid August

Over the course of the year, the temperature in São João do Soter typically varies from 23°C to 36°C, and is rarely below 21°C or above 38°C. September is the hottest month of the year, while March is the coldest.

Based on the travel score, the best time of year to visit São João do Soter for warm-weather activities is from mid May to mid August.

Hottest
Sep
36°
Coldest
Mar
23°
Wettest
Mar
308 mm
Driest
Aug
3 mm
Rain / yr
1402 mm
153 wet days
Daylight
11.7–12.3 h
shortest–longest
Elevation
114 m
5.1°S
Clearest
Aug
33% cloud

São João do Soter 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 mid May to mid August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in São João do Soter 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 23°C; the coolest is March, 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 12°C) in September.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3123
Feb3123
Mar3123
Apr3123
May3123
Jun3223
Jul3323
Aug3423
Sep3623
Oct3624
Nov3524
Dec3324

How hot and cold São João do Soter 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 João do Soter feels like about 39°C (around October 15). Nearly every day a year carries some heat stress, and 30 of them tip into dangerous heat (feels-like above 39°C), peaking in October.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan36312323
Feb36312323
Mar36312323
Apr37312323
May37312323
Jun35322323
Jul35332323
Aug36342323
Sep38362323
Oct39362424
Nov39352424
Dec38332424

Average hourly temperature in São João do Soter

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 March, near 23°C.

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

São João do Soter 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°24025.312.32.7
Feb31° / 23°25624.412.22.7
Mar31° / 23°30828.3122.6
Apr31° / 23°24725.111.92.9
May31° / 23°11615.211.83.8
Jun32° / 23°184.111.74.4
Jul33° / 23°81.511.74.3
Aug34° / 23°30.711.83.6
Sep36° / 23°81.4122.8
Oct36° / 24°193.612.12.6
Nov35° / 24°608.712.22.8
Dec33° / 24°12115.212.32.9

Chance of rain

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

São João do Soter gets about 1402 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 5.4 months, from around Dec 10 to May 21, peaking in March at about 92% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 21.

March is the wettest month by volume, with 308 mm over about 28 wet days; August is the driest, with 3 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetMar 21 · 92%Aug 21 · 2%
Rain on a day (%)Rain days
Jan8125
Feb8724
Mar9128
Apr8325
May4915
Jun144
Jul52
Aug31
Sep51
Oct124
Nov289
Dec5115

Monthly rainfall

Over a full year, São João do Soter collects about 1402 mm of rain across 153 wet days — roughly 117 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 308 mm, while August is the driest at just 3 mm. The three wettest months alone bring about 58% of the year’s total.

050100150200250300350JanFebMarAprMayJunJulAugSepOctNovDec240256308247116188381960121
Rainfall (mm)Rain days
Jan24025
Feb25624
Mar30828
Apr24725
May11615
Jun184
Jul82
Aug31
Sep81
Oct194
Nov609
Dec12115

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In São João do Soter, 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 20 and lasts for 5.8 months, ending around November 13. The clearest month is September, when the sky is clear, mostly clear, or partly cloudy 88% of the time on average.

The cloudier part of the year begins around November 14 and lasts for 6.1 months, ending around May 19. The cloudiest month is March, when it is overcast or mostly cloudy 85% 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%JanFebMarAprMayJunJulAugSepOctNovDecSep 18 · 89%Mar 17 · 13%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan1981
Feb1783
Mar1585
Apr2377
May4753
Jun7228
Jul8119
Aug8713
Sep8812
Oct7624
Nov5149
Dec3763

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. Close to the equator, São João do Soter barely changes through the year: days stay near 12 h 18 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.35:576:13
Feb12.26:056:15
Mar12.06:046:06
Apr11.95:595:52
May11.85:585:45
Jun11.76:045:47
Jul11.76:095:53
Aug11.86:045:54
Sep12.05:505:49
Oct12.15:375:44
Nov12.25:335:48
Dec12.35:436:00

Sunny days

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

São João do Soter averages about 9 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 1 and 21 days.

The sunnier stretch runs 5.5 months, from around May 26 to Nov 7. The sunniest month is August, with roughly 20 sunny days (bright).

The greyest month is March, down near 1 sunny days — about 95% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 2921 daysMar 221 days
Sunny daysSky
Jan2Gloomy
Feb1Gloomy
Mar1Gloomy
Apr2Gloomy
May7Gloomy
Jun12Mixed
Jul16Bright
Aug21Bright
Sep20Bright
Oct16Bright
Nov8Mixed
Dec5Gloomy

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.

São João do Soter is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.

The stickiest month is January, when it feels muggy, oppressive or miserable about 100% of the time. Even in August, the mildest month, the air is dry or comfortable only 9% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 3 · 11%Jan 1 · 0%miserableoppressivemuggyhumidcomfortablehumidcomfortablehumid
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan0028217
Feb0007426
Mar0006040
Apr0004951
May0046036
Jun0738514
Jul63043210
Aug94036150
Sep42251230
Oct0554410
Nov0130672
Dec0012835

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 João do Soter is typically calm, near 6 km/h, and varies little with the seasons.

The windier part of the year lasts 5.6 months, from around May 31 to Nov 16. The windiest month is July, averaging about 8 km/h (calm).

The calmer part of the year runs from around Nov 17 to May 30, with March the calmest month at about 4 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeJul 29 · 9 km/hMar 25 · 4 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar4calm
Apr5calm
May6calm
Jun7calm
Jul8calm
Aug9calm
Sep8calm
Oct7calm
Nov6calm
Dec6calm

Hazard calendar for São João do Soter

In seasonPeak

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

São João do Soter's monsoon runs January–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 São João do Soter

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early August, São João do Soter 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 São João do Soter for general outdoor tourist activities is from mid May to mid August, with a peak score in the third week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 18 · 4.5

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
Jan2.7poor
Feb2.7poor
Mar2.6poor
Apr2.9poor
May3.8fair
Jun4.4fair
Jul4.3fair
Aug3.6fair
Sep2.8poor
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 João do Soter for hot-weather activities is from late May to late September, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 25 · 7.7

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 João do Soter, 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 João do Soter 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 João do Soter sees daytime highs around 36°C and nights near 23°C. Pack light clothes and sun protection.

UV index (midday) in São João do Soter 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 João do Soter peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 12UV 15Aug 10UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Average hourly UV index in São João do Soter

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 March 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)
Jan86.5
Feb8.56.5
Mar8.56.5
Apr86
May7.55.5
Jun75
Jul7.55
Aug7.55
Sep7.55.5
Oct86
Nov7.55.5
Dec7.55.5

Air quality in São João do Soter 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 João do Soter is worst in October — around 83 µg/m³ PM2.5 (unhealthy), about 7.2× the cleanest month (May, 12 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecModerateModeratePoorUnhealthyModerateOct 1578 µg/m³May 1112 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar13Moderate
Apr12Moderate
May12Good
Jun16Moderate
Jul18Moderate
Aug32Moderate
Sep53Poor
Oct83Unhealthy
Nov39Poor
Dec26Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

São João do Soter 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 João do Soter banks about 6,558 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan532
Feb471
Mar519
Apr505
May530
Jun525
Jul551
Aug575
Sep585
Oct615
Nov579
Dec571

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 João do Soter receives about 5.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.4 and 6.4 kWh/m².

The brighter stretch of the year lasts 5.2 months, from around Jul 13 to Dec 18. The brightest month is September, averaging about 6.4 kWh/m² (intense).

The dimmest month is March, down near 4.5 kWh/m² — roughly 29% less than the September peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseSep 276.4 kWhMar 294.4 kWh
Solar energy (kWh/m²)Level
Jan4.7Bright
Feb4.7Bright
Mar4.5Bright
Apr4.5Bright
May4.7Bright
Jun5.1Bright
Jul5.4Bright
Aug6.1Intense
Sep6.4Intense
Oct6.3Intense
Nov5.8Bright
Dec5.4Bright

Where is São João do Soter?

São João do Soter sits at 5.1°S, 43.8°W, 114 m above sea level, in Brazil. The nearest listed city is Caxias, 58 km away.

Topography around São João do Soter

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

Within 3 km, the terrain around São João do Soter has only modest variations in elevation — a maximum elevation change of 68 m around an average of 132 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 184 m; within 80 km, significant variations in elevation — a maximum elevation change of 268 m.

The land around São João do Soter is covered by trees (64%) and grassland (23%) within 3 km, trees (66%) and grassland (23%) within 16 km, and trees (66%) and grassland (25%) within 80 km.

3 km
68 m
16 km
184 m
80 km
268 m
treesshrubsgrasslandcroplandartificial surfaces
Nearby: Caxias 58 km · Aldeias Altas 66 km · Dom Pedro 70 km · Codó 74 km · Presidente Dutra 78 km · Fortuna 79 km · Buriti Bravo 80 km · Matões 81 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 João do Soter (-5.1139°, -43.81°, elevation 114 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).