Climate and average weather in São Bento

In São Bento, the weather is muggy, hot, wet, and mostly clear and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around April.

Best: mid June to early December

Over the course of the year, the temperature in São Bento typically varies from 24°C to 33°C, and is rarely below 23°C or above 34°C. October 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 Bento for warm-weather activities is from mid June to early December.

Hottest
Oct
33°
Coldest
Mar
24°
Wettest
Apr
351 mm
Driest
Sep
9 mm
Rain / yr
1635 mm
191 wet days
Daylight
11.8–12.2 h
shortest–longest
Elevation
10 m
2.7°S
Clearest
Sep
35% cloud

São Bento is settlement in Brazil.

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

São Bento 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 June to early December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in São Bento stay fairly even through the year, without a distinct hot or cool season. The warmest month is October, with an average high of 33°C and low of 25°C; the coolest is March, with an average low of 24°C and high of 30°C.

Days typically run about 7°C warmer than nights year-round.

20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3125
Feb3024
Mar3024
Apr3024
May3025
Jun3024
Jul3124
Aug3224
Sep3325
Oct3325
Nov3325
Dec3225

How hot and cold São Bento 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 Bento feels like about 38°C (around May 16). Nearly every day a year carries some heat stress, peaking in May.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan36312525
Feb36302424
Mar36302424
Apr36302424
May37302525
Jun37302424
Jul36312424
Aug36322424
Sep37332525
Oct37332525
Nov37332525
Dec37322525

Average hourly temperature in São Bento

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 October afternoons, near 33°C, and coldest before dawn in March, near 24°C.

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

São Bento 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° / 25°17723.412.13.0
Feb30° / 24°23925.412.12.8
Mar30° / 24°34030.1122.6
Apr30° / 24°35128.711.92.6
May30° / 25°23325.111.93.1
Jun30° / 24°10518.611.83.9
Jul31° / 24°6513.411.94.6
Aug32° / 24°184.711.94.9
Sep33° / 25°92.2124.7
Oct33° / 25°152.712.14.5
Nov33° / 25°255.112.14.2
Dec32° / 25°591212.23.6

Chance of rain

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

São Bento gets about 1635 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 6.4 months, from around Dec 25 to Jul 8, peaking in March at about 98% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Oct 1.

April is the wettest month by volume, with 351 mm over about 29 wet days; September is the driest, with 9 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetMar 25 · 98%Oct 1 · 6%
Rain on a day (%)Rain days
Jan7523
Feb9025
Mar9730
Apr9529
May8125
Jun6319
Jul4213
Aug155
Sep82
Oct93
Nov175
Dec4012

Monthly rainfall

Over a full year, São Bento collects about 1635 mm of rain across 191 wet days — roughly 136 mm in an average month.

It doesn’t fall evenly. April is the wettest month with 351 mm, while September is the driest at just 9 mm. The three wettest months alone bring about 57% of the year’s total.

050100150200250300350400JanFebMarAprMayJunJulAugSepOctNovDec17723934035123310565189152559
Rainfall (mm)Rain days
Jan17723
Feb23925
Mar34030
Apr35129
May23325
Jun10519
Jul6513
Aug185
Sep92
Oct153
Nov255
Dec5912

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In São Bento, 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 June 2 and lasts for 6.3 months, ending around December 10. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 92% of the time on average.

The cloudier part of the year begins around December 11 and lasts for 5.7 months, ending around June 1. The cloudiest month is March, when it is overcast or mostly cloudy 90% 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%JanFebMarAprMayJunJulAugSepOctNovDecAug 29 · 93%Mar 30 · 7%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan2278
Feb1783
Mar1090
Apr1288
May3466
Jun6535
Jul8218
Aug928
Sep919
Oct8119
Nov6040
Dec4654

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 Bento barely changes through the year: days stay near 12 h 12 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.16:046:13
Feb12.16:116:17
Mar12.06:086:09
Apr11.96:015:58
May11.95:595:52
Jun11.86:045:55
Jul11.96:096:01
Aug11.96:066:01
Sep12.05:545:53
Oct12.15:435:46
Nov12.15:415:48
Dec12.25:516:00

Sunny days

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

São Bento averages about 10 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 24 days.

The sunnier stretch runs 6.0 months, from around Jun 10 to Dec 8. The sunniest month is September, with roughly 22 sunny days (bright).

The greyest month is March, down near 1 sunny days — about 96% fewer than the September peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergloomymixedbrightbrilliantSep 324 daysMar 300 days
Sunny daysSky
Jan2Gloomy
Feb2Gloomy
Mar1Gloomy
Apr1Gloomy
May4Gloomy
Jun11Mixed
Jul17Bright
Aug22Bright
Sep22Bright
Oct18Bright
Nov11Mixed
Dec8Gloomy

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 Bento 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 January, the mildest month, the air is dry or comfortable only 0% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressive
Muggy (%)Oppressive (%)Miserable (%)
Jan07228
Feb05347
Mar04060
Apr02674
May01684
Jun03565
Jul06238
Aug18415
Sep1972
Oct0982
Nov0955
Dec08911

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 Bento is typically calm, near 11 km/h, and varies moderately with the seasons.

The windier part of the year lasts 5.0 months, from around Aug 10 to Jan 8. The windiest month is October, averaging about 16 km/h (light breeze).

The calmer part of the year runs from around Jan 9 to Aug 9, with April the calmest month at about 8 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmlight breezeOct 12 · 16 km/hApr 25 · 8 km/h
Wind speed (km/h)Feels
Jan11calm
Feb9calm
Mar8calm
Apr8calm
May8calm
Jun9calm
Jul9calm
Aug12calm
Sep15light breeze
Oct16light breeze
Nov15light breeze
Dec13light breeze

Hazard calendar for São Bento

In seasonPeak

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

São Bento's monsoon runs January–May, 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 Bento

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late November, São Bento 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 Bento for general outdoor tourist activities is from late June to early December, with a peak score in the first week of August.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 5 · 5.0

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
Jan3.0poor
Feb2.8poor
Mar2.6poor
Apr2.7poor
May3.1poor
Jun3.9fair
Jul4.6fair
Aug4.9fair
Sep4.6fair
Oct4.5fair
Nov4.2fair
Dec3.6fair

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 Bento for hot-weather activities is from mid July to mid December, with a peak score in the first week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationSep 6 · 7.8

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 Bento, 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 Bento packs about the same all year — highs hold near 33°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 October, São Bento sees daytime highs around 33°C and nights near 25°C. Pack light clothes and sun protection.

Sea temperature near São Bento

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 50 km away) is warmest in May at about 29°C and coldest in October near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar28Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Warm
Oct28Warm
Nov28Warm
Dec28Warm

UV index (midday) in São Bento 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 Bento peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 18UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Average hourly UV index in São Bento

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 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
Feb8.56.5
Mar86.5
Apr86.5
May7.55.5
Jun7.55.5
Jul7.55
Aug7.55.5
Sep7.55.5
Oct86
Nov85.5
Dec85.5

Air quality in São Bento 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 Bento is worst in November — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (June, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1918 µg/m³Jun 199 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar16Moderate
Apr14Moderate
May10Good
Jun9Good
Jul9Good
Aug10Good
Sep9Good
Oct13Moderate
Nov18Moderate
Dec16Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

São Bento 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 Bento banks about 6,534 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around November.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan553
Feb485
Mar532
Apr516
May541
Jun518
Jul534
Aug559
Sep561
Oct586
Nov568
Dec580

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 Bento receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.2 and 6.2 kWh/m².

The brighter stretch of the year lasts 5.4 months, from around Jul 20 to Dec 30. The brightest month is October, averaging about 6.2 kWh/m² (intense).

The dimmest month is March, down near 4.4 kWh/m² — roughly 29% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseOct 76.2 kWhMar 314.2 kWh
Solar energy (kWh/m²)Level
Jan4.9Bright
Feb4.6Bright
Mar4.3Bright
Apr4.2Bright
May4.5Bright
Jun4.8Bright
Jul5.1Bright
Aug5.6Bright
Sep6.1Intense
Oct6.2Intense
Nov5.9Bright
Dec5.5Bright

Where is São Bento?

São Bento sits at 2.7°S, 44.8°W, 10 m above sea level, in Brazil. The nearest listed city is Palmeirândia, 10 km away.

Topography around São Bento

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

Within 3 km, the terrain around São Bento has only modest variations in elevation — a maximum elevation change of 25 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 102 m; within 80 km, only modest variations in elevation — a maximum elevation change of 173 m.

The land around São Bento is covered by wetland (55%) and grassland (23%) within 3 km, wetland (44%), trees (30%) and grassland (20%) within 16 km, and trees (45%) and grassland (22%) within 80 km.

3 km
25 m
16 km
102 m
80 km
173 m
treesgrasslandartificial surfaceswaterwetlandmangroves
Nearby: Palmeirândia 10 km · São Vicente Ferrer 23 km · Bequimão 28 km · São João Batista 29 km · Pinheiro 35 km · Matinha 51 km · Alcântara 55 km · São Luís 60 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 Bento (-2.6958°, -44.8214°, elevation 10 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).