Climate and average weather in Belém de São Francisco

In Belém de São Francisco, the weather is sweltering, showery, and mostly clear and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around March.

Best: late May to mid September

Over the course of the year, the temperature in Belém de São Francisco typically varies from 20°C to 35°C, and is rarely below 19°C or above 37°C. November is the hottest month of the year, while July is the coldest.

Based on the travel score, the best time of year to visit Belém de São Francisco for warm-weather activities is from late May to mid September.

Hottest
Nov
35°
Coldest
Jul
20°
Wettest
Mar
80 mm
Driest
Sep
2 mm
Rain / yr
340 mm
50 wet days
Daylight
11.5–12.5 h
shortest–longest
Elevation
317 m
8.8°S
Clearest
Oct
36% cloud

Belém de São Francisco is human settlement in Brazil.

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

Belém de São Francisco 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 May to mid September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Belém de São Francisco stay fairly even through the year, without a distinct hot or cool season. The warmest month is November, with an average high of 35°C and low of 24°C; the coolest is July, with an average low of 20°C and high of 29°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in October.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3424
Feb3424
Mar3324
Apr3223
May3122
Jun3021
Jul2920
Aug3020
Sep3221
Oct3422
Nov3524
Dec3524

How hot and cold Belém de São Francisco 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, Belém de São Francisco feels like about 36°C (around December 1). About 264 days a year carry some heat stress, peaking in December.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan36342424
Feb36342424
Mar36332424
Apr35322323
May33312222
Jun31302121
Jul30292020
Aug31302020
Sep33322121
Oct35342222
Nov36352424
Dec36352424

Average hourly temperature in Belém de São Francisco

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 November afternoons, near 35°C, and coldest before dawn in July, near 20°C.

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

Belém de São Francisco 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
Jan34° / 24°647.312.53.3
Feb34° / 24°608.512.33.3
Mar33° / 24°8010.312.13.4
Apr32° / 23°447.611.84.0
May31° / 22°204.511.65.0
Jun30° / 21°102.411.56.1
Jul29° / 20°61.511.56.4
Aug30° / 20°40.911.76.1
Sep32° / 21°20.311.95.0
Oct34° / 22°7112.23.8
Nov35° / 24°132.212.43.1
Dec35° / 24°293.712.53.1

Chance of rain

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

Belém de São Francisco gets about 340 mm of precipitation a year. On a typical day the chance of rain is mostly dry, but that rises and falls sharply with the seasons.

The wetter season lasts 4.8 months, from around Dec 24 to May 18, peaking in March at about 38% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Sep 19.

March is the wettest month by volume, with 80 mm over about 10 wet days; September is the driest, with 2 mm.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetMar 24 · 38%Sep 19 · 1%
Rain on a day (%)Rain days
Jan247
Feb309
Mar3310
Apr268
May155
Jun82
Jul52
Aug31
Sep10
Oct31
Nov72
Dec124

Monthly rainfall

Over a full year, Belém de São Francisco collects about 340 mm of rain across 50 wet days — roughly 28 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 80 mm, while September is the driest at just 2 mm. The three wettest months alone bring about 60% of the year’s total.

0255075100JanFebMarAprMayJunJulAugSepOctNovDec64608044201064271329
Rainfall (mm)Rain days
Jan647
Feb609
Mar8010
Apr448
May205
Jun102
Jul62
Aug41
Sep20
Oct71
Nov132
Dec294

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Belém de São Francisco, 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 August 28 and lasts for 3.7 months, ending around December 17. The clearest month is October, when the sky is clear, mostly clear, or partly cloudy 77% of the time on average.

The cloudier part of the year begins around April 15 and lasts for 4.4 months, ending around August 27. The cloudiest month is July, when it is overcast or mostly cloudy 52% 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 28 · 82%Jul 24 · 46%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan5347
Feb5248
Mar5644
Apr5842
May5545
Jun5149
Jul4852
Aug5446
Sep7327
Oct7723
Nov6733
Dec5941

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 30 min of light; the shortest, around May 27, only 11 h 30 min — a swing of roughly 1 hour.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.55:315:59
Feb12.35:425:59
Mar12.15:445:47
Apr11.85:425:30
May11.65:445:20
Jun11.55:515:21
Jul11.55:555:28
Aug11.75:495:31
Sep11.95:325:29
Oct12.25:155:27
Nov12.45:095:33
Dec12.55:175:47

Sunny days

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

Belém de São Francisco averages about 11 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 7 and 20 days.

The sunnier stretch runs 4.0 months, from around Aug 26 to Dec 26. The sunniest month is September, with roughly 17 sunny days (bright).

The greyest month is June, down near 7 sunny days — about 56% fewer than the September peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergloomymixedbrightbrilliantSep 2820 daysJun 157 days
Sunny daysSky
Jan11Mixed
Feb9Mixed
Mar11Mixed
Apr10Mixed
May9Mixed
Jun7Gloomy
Jul8Gloomy
Aug11Mixed
Sep16Bright
Oct18Bright
Nov14Mixed
Dec13Mixed

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.

Belém de São Francisco 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 February, when it feels muggy, oppressive or miserable about 78% of the time. Even in October, the mildest month, the air is dry or comfortable only 10% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecOct 31 · 11%Feb 8 · 0%oppressivemuggyhumidcomfortablehumidcomfortable
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan2344420
Feb0215326
Mar0154936
Apr0125533
May0147213
Jun030682
Jul261370
Aug577180
Sep876160
Oct1065241
Nov759323
Dec451387

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 Belém de São Francisco is typically light breeze, near 16 km/h, and varies moderately with the seasons.

The windier part of the year lasts 5.8 months, from around May 22 to Nov 15. The windiest month is September, averaging about 20 km/h (light breeze).

The calmer part of the year runs from around Nov 16 to May 21, with March the calmest month at about 13 km/h.

0510152025JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezebreezySep 8 · 20 km/hMar 20 · 13 km/h
Wind speed (km/h)Feels
Jan14light breeze
Feb14light breeze
Mar13light breeze
Apr15light breeze
May16light breeze
Jun18light breeze
Jul19light breeze
Aug20light breeze
Sep20light breeze
Oct19light breeze
Nov16light breeze
Dec15light breeze

Best time to visit Belém de São Francisco

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late May, Belém de São Francisco 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 Belém de São Francisco for general outdoor tourist activities is from late May to mid September, with a peak score in the third week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 20 · 6.4

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
Jan3.3poor
Feb3.3poor
Mar3.4poor
Apr4.0fair
May5.0fair
Jun6.0good
Jul6.4good
Aug6.0good
Sep5.0fair
Oct3.8fair
Nov3.2poor
Dec3.1poor

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 Belém de São Francisco for hot-weather activities is from mid April to mid November, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 31 · 8.4

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 Belém de São Francisco, 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.

Belém de São Francisco packs about the same all year — highs hold near 35°C. Across the year the things worth having are light clothes and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In November, Belém de São Francisco sees daytime highs around 35°C and nights near 24°C. Pack light clothes and sun protection.

UV index (midday) in Belém de São Francisco 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 Belém de São Francisco peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 10UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme

Average hourly UV index in Belém de São Francisco

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)
Jan8.56.5
Feb8.56.5
Mar8.56.5
Apr86
May7.55.5
Jun74.5
Jul75
Aug75
Sep86
Oct86
Nov86
Dec86
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Belém de São Francisco 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. Belém de São Francisco banks about 6,329 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around December.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan581
Feb518
Mar571
Apr533
May516
Jun460
Jul454
Aug466
Sep497
Oct562
Nov574
Dec596

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.

Belém de São Francisco receives about 5.7 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.0 and 7.0 kWh/m².

The brighter stretch of the year lasts 7.1 months, from around Sep 8 to Apr 11. The brightest month is November, averaging about 6.9 kWh/m² (intense).

The dimmest month is June, down near 4.0 kWh/m² — roughly 42% less than the November peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseNov 47.0 kWhJun 204.0 kWh
Solar energy (kWh/m²)Level
Jan6.4Intense
Feb6.4Intense
Mar6.2Intense
Apr5.7Bright
May4.6Bright
Jun4.0Bright
Jul4.1Bright
Aug4.9Bright
Sep6.1Intense
Oct6.9Intense
Nov6.9Intense
Dec6.7Intense

Where is Belém de São Francisco?

Belém de São Francisco sits at 8.8°S, 39.0°W, 317 m above sea level, in Brazil. The nearest listed city is Abaré, 17 km away.

Topography around Belém de São Francisco

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

Within 3 km, the terrain around Belém de São Francisco has only modest variations in elevation — a maximum elevation change of 33 m around an average of 312 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 87 m; within 80 km, large variations in elevation — a maximum elevation change of 643 m.

The land around Belém de São Francisco is covered by shrubs (31%) and grassland (28%) within 3 km, shrubs (44%) and grassland (38%) within 16 km, and shrubs (82%) within 80 km.

3 km
33 m
16 km
87 m
80 km
643 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
Nearby: Abaré 17 km · Cabrobó 46 km · Floresta 47 km · Salgueiro 77 km · Petrolândia 86 km · Santa Maria da Boa Vista 95 km · Tacaratu 98 km · Serrita 98 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 Belém de São Francisco (-8.7539°, -38.9658°, elevation 317 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).