Climate and average weather in Bom Jesus das Selvas

In Bom Jesus das Selvas, 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 Bom Jesus das Selvas typically varies from 21°C to 35°C, and is rarely below 20°C or above 36°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 Bom Jesus das Selvas for warm-weather activities is from mid May to mid August.

Hottest
Sep
35°
Coldest
Mar
23°
Wettest
Mar
243 mm
Driest
Aug
4 mm
Rain / yr
1186 mm
159 wet days
Daylight
11.7–12.3 h
shortest–longest
Elevation
199 m
4.5°S
Clearest
Aug
34% cloud

Bom Jesus das Selvas 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 Bom Jesus das Selvas, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Bom Jesus das Selvas stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 35°C and low of 23°C; the coolest is March, with an average low of 23°C and high of 30°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
Feb3022
Mar3023
Apr3023
May3122
Jun3222
Jul3321
Aug3422
Sep3523
Oct3423
Nov3323
Dec3223

How hot and cold Bom Jesus das Selvas 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, Bom Jesus das Selvas feels like about 38°C (around September 27). Nearly every day a year carries some heat stress, peaking in September.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan35312223
Feb34302222
Mar34302323
Apr34302323
May35312222
Jun35322222
Jul35332121
Aug36342222
Sep37352323
Oct37342323
Nov37332323
Dec36322323

Average hourly temperature in Bom Jesus das Selvas

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 35°C, and coldest before dawn in March, near 23°C.

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

Bom Jesus das Selvas 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°20225.112.22.9
Feb30° / 22°21924.412.12.9
Mar30° / 23°24328.2122.8
Apr30° / 23°18425.411.93.0
May31° / 22°9615.511.83.9
Jun32° / 22°194.411.74.9
Jul33° / 21°92.311.84.5
Aug34° / 22°40.711.93.8
Sep35° / 23°91.7123.4
Oct34° / 23°234.312.13.3
Nov33° / 23°5810.212.23.2
Dec32° / 23°1191712.33.2

Chance of rain

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

Bom Jesus das Selvas gets about 1186 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 5.5 months, from around Dec 6 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 10.

March is the wettest month by volume, with 243 mm over about 28 wet days; August is the driest, with 4 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetMar 22 · 92%Aug 10 · 2%
Rain on a day (%)Rain days
Jan8125
Feb8724
Mar9128
Apr8425
May5016
Jun164
Jul72
Aug21
Sep62
Oct154
Nov3310
Dec5617

Monthly rainfall

Over a full year, Bom Jesus das Selvas collects about 1186 mm of rain across 159 wet days — roughly 99 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 243 mm, while August is the driest at just 4 mm. The three wettest months alone bring about 56% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec20221924318496199492358119
Rainfall (mm)Rain days
Jan20225
Feb21924
Mar24328
Apr18425
May9616
Jun194
Jul92
Aug41
Sep92
Oct234
Nov5810
Dec11917

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Bom Jesus das Selvas, 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 22 and lasts for 5.5 months, ending around November 3. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 89% of the time on average.

The cloudier part of the year begins around November 4 and lasts for 6.5 months, ending around May 21. 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 8 · 91%Mar 20 · 9%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan1288
Feb1288
Mar1090
Apr1585
May3961
Jun7228
Jul8416
Aug8911
Sep8416
Oct6436
Nov3961
Dec2674

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, Bom Jesus das Selvas 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)
Jan12.26:106:24
Feb12.16:186:26
Mar12.06:166:18
Apr11.96:116:05
May11.86:105:58
Jun11.76:156:00
Jul11.86:206:06
Aug11.96:166:07
Sep12.06:026:01
Oct12.15:495:55
Nov12.25:465:59
Dec12.35:566:11

Sunny days

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

Bom Jesus das Selvas averages about 8 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 21 days.

The sunnier stretch runs 4.9 months, from around May 30 to Oct 25. The sunniest month is August, with roughly 20 sunny days (bright).

The greyest month is March, down near 1 sunny days — about 97% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 521 daysMar 280 days
Sunny daysSky
Jan1Gloomy
Feb1Gloomy
Mar1Gloomy
Apr1Gloomy
May5Gloomy
Jun12Mixed
Jul18Bright
Aug21Bright
Sep17Bright
Oct11Mixed
Nov5Gloomy
Dec3Gloomy

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.

Bom Jesus das Selvas 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 4% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggyhumid
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan001981
Feb000964
Mar000937
Apr0008614
May002908
Jun0329681
Jul12245320
Aug42549220
Sep1860300
Oct0154450
Nov0031680
Dec0011880

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 Bom Jesus das Selvas is typically calm, near 7 km/h, and varies little with the seasons.

The windier part of the year lasts 5.7 months, from around Jun 5 to Nov 24. The windiest month is September, averaging about 9 km/h (calm).

The calmer part of the year runs from around Nov 25 to Jun 4, with March the calmest month at about 6 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeSep 14 · 9 km/hMar 28 · 5 km/h
Wind speed (km/h)Feels
Jan6calm
Feb6calm
Mar6calm
Apr6calm
May6calm
Jun8calm
Jul8calm
Aug9calm
Sep9calm
Oct9calm
Nov7calm
Dec7calm

Hazard calendar for Bom Jesus das Selvas

In seasonPeak

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

Bom Jesus das Selvas's monsoon runs December–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 Bom Jesus das Selvas

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early August, Bom Jesus das Selvas 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 Bom Jesus das Selvas 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 15 · 4.9

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
Apr3.0poor
May3.9fair
Jun4.8fair
Jul4.5fair
Aug3.8fair
Sep3.4poor
Oct3.3poor
Nov3.2poor
Dec3.2poor

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 Bom Jesus das Selvas for hot-weather activities is from late May to early November, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 1 · 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 Bom Jesus das Selvas, 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.

Bom Jesus das Selvas packs about the same all year — highs hold near 35°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, Bom Jesus das Selvas sees daytime highs around 35°C and nights near 23°C. Pack light clothes and sun protection.

UV index (midday) in Bom Jesus das Selvas 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 Bom Jesus das Selvas peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 14UV 15Dec 11UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec10Very high

Average hourly UV index in Bom Jesus das Selvas

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
Feb86.5
Mar8.56.5
Apr86
May7.55.5
Jun7.55
Jul7.55
Aug7.55.5
Sep86
Oct7.55.5
Nov7.55.5
Dec7.55.5

Air quality in Bom Jesus das Selvas 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 Bom Jesus das Selvas is worst in November — around 43 µg/m³ PM2.5 (poor), about 6.0× the cleanest month (June, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateNov 1442 µg/m³Jun 157 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar13Moderate
Apr11Good
May9Good
Jun7Good
Jul10Good
Aug15Moderate
Sep16Moderate
Oct35Moderate
Nov43Poor
Dec30Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Bom Jesus das Selvas 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. Bom Jesus das Selvas banks about 6,286 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)
Jan514
Feb457
Mar505
Apr492
May513
Jun497
Jul525
Aug551
Sep556
Oct581
Nov552
Dec545

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.

Bom Jesus das Selvas receives about 5.1 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.2 and 6.1 kWh/m².

The brighter stretch of the year lasts 5.5 months, from around Jul 2 to Dec 15. The brightest month is September, averaging about 6.1 kWh/m² (intense).

The dimmest month is March, down near 4.3 kWh/m² — roughly 29% less than the September peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseSep 296.1 kWhMar 304.2 kWh
Solar energy (kWh/m²)Level
Jan4.6Bright
Feb4.4Bright
Mar4.3Bright
Apr4.3Bright
May4.5Bright
Jun5.0Bright
Jul5.3Bright
Aug5.9Bright
Sep6.1Intense
Oct6.0Intense
Nov5.6Bright
Dec5.1Bright

Where is Bom Jesus das Selvas?

Bom Jesus das Selvas sits at 4.5°S, 46.9°W, 199 m above sea level, in Brazil. The nearest listed city is Buriticupu, 48 km away.

Topography around Bom Jesus das Selvas

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bom Jesus das Selvas.

Within 3 km, the terrain around Bom Jesus das Selvas has only modest variations in elevation — a maximum elevation change of 145 m around an average of 165 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 231 m; within 80 km, significant variations in elevation — a maximum elevation change of 401 m.

The land around Bom Jesus das Selvas is covered by grassland (54%) and trees (35%) within 3 km, trees (50%) and grassland (48%) within 16 km, and trees (55%) and grassland (41%) within 80 km.

3 km
145 m
16 km
231 m
80 km
401 m
treesshrubsgrasslandcroplandartificial surfaces
Nearby: Buriticupu 48 km · Itinga do Maranhão 75 km · Dom Eliseu 76 km · Açailândia 89 km · Arame 104 km · Ulianópolis 109 km · Amarante do Maranhão 121 km · João Lisboa 123 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 Bom Jesus das Selvas (-4.4835°, -46.8533°, elevation 199 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).