Climate and average weather in São Francisco do Guaporé

In São Francisco do Guaporé, the weather is muggy, hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around February.

Best: mid May to mid August

Over the course of the year, the temperature in São Francisco do Guaporé typically varies from 19°C to 33°C, and is rarely below 15°C or above 36°C. September is the hottest month of the year, while May is the coldest.

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

Hottest
Sep
33°
Coldest
May
21°
Wettest
Feb
258 mm
Driest
Jul
16 mm
Rain / yr
1688 mm
214 wet days
Daylight
11.3–12.7 h
shortest–longest
Elevation
170 m
12.1°S
Clearest
Jul
32% cloud

São Francisco do Guaporé 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 Francisco do Guaporé, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in São Francisco do Guaporé stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 33°C and low of 22°C; the coolest is May, with an average low of 21°C and high of 29°C.

Days typically run about 9°C warmer than nights, with the widest day–night swing (around 12°C) in August.

10°15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3023
Feb3023
Mar3023
Apr3022
May2921
Jun3020
Jul3119
Aug3320
Sep3322
Oct3223
Nov3123
Dec3023

How hot and cold São Francisco do Guaporé 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 Francisco do Guaporé feels like about 37°C (around October 3). About 331 days a year carry some heat stress, peaking in October.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan34302323
Feb34302323
Mar34302323
Apr34302222
May32292121
Jun32302020
Jul32311919
Aug34332020
Sep36332222
Oct36322323
Nov35312323
Dec34302323

Average hourly temperature in São Francisco do Guaporé

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 33°C, and coldest before dawn in May, near 21°C.

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

São Francisco do Guaporé 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
Jan30° / 23°24527.612.62.8
Feb30° / 23°25825.412.42.9
Mar30° / 23°24927.712.12.9
Apr30° / 22°14821.611.73.6
May29° / 21°7414.211.54.8
Jun30° / 20°244.811.35.7
Jul31° / 19°16311.45.5
Aug33° / 20°305.611.64.3
Sep33° / 22°7213.611.93.3
Oct32° / 23°13920.212.32.9
Nov31° / 23°19323.612.62.9
Dec30° / 23°2412712.72.8

Chance of rain

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

São Francisco do Guaporé gets about 1688 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 6.8 months, from around Oct 4 to Apr 29, peaking in February at about 91% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 23.

February is the wettest month by volume, with 258 mm over about 25 wet days; July is the driest, with 16 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetFeb 8 · 91%Jul 23 · 9%
Rain on a day (%)Rain days
Jan8928
Feb9125
Mar8928
Apr7222
May4514
Jun185
Jul103
Aug196
Sep4514
Oct6520
Nov7924
Dec8727

Monthly rainfall

Over a full year, São Francisco do Guaporé collects about 1688 mm of rain across 214 wet days — roughly 141 mm in an average month.

It doesn’t fall evenly. February is the wettest month with 258 mm, while July is the driest at just 16 mm. The three wettest months alone bring about 45% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec2452582491487424163072139193241
Rainfall (mm)Rain days
Jan24528
Feb25825
Mar24928
Apr14822
May7414
Jun245
Jul163
Aug306
Sep7214
Oct13920
Nov19324
Dec24127

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In São Francisco do Guaporé, 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 11 and lasts for 5.0 months, ending around October 10. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 83% of the time on average.

The cloudier part of the year begins around October 11 and lasts for 7.0 months, ending around May 10. The cloudiest month is February, when it is overcast or mostly cloudy 95% 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 25 · 85%Feb 17 · 4%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan793
Feb595
Mar892
Apr2179
May4159
Jun7327
Jul8317
Aug8020
Sep6040
Oct3169
Nov1387
Dec1090

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 42 min of light; the shortest, around June 1, only 11 h 18 min — a swing of roughly 1 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.66:046:43
Feb12.46:176:41
Mar12.16:216:26
Apr11.76:236:06
May11.56:275:54
Jun11.36:365:53
Jul11.46:396:01
Aug11.66:306:06
Sep11.96:116:07
Oct12.35:516:07
Nov12.65:436:16
Dec12.75:496:32

Sunny days

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

São Francisco do Guaporé averages about 7 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 22 days.

The sunnier stretch runs 4.3 months, from around May 20 to Sep 27. The sunniest month is July, with roughly 21 sunny days (bright).

The greyest month is March, down near 0 sunny days — about 98% fewer than the July peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2522 daysMar 80 days
Sunny daysSky
Jan0Gloomy
Feb0Gloomy
Mar0Gloomy
Apr2Gloomy
May7Gloomy
Jun16Bright
Jul21Bright
Aug20Bright
Sep11Mixed
Oct4Gloomy
Nov1Gloomy
Dec1Gloomy

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 Francisco do Guaporé 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 14% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 1 · 17%Jan 1 · 0%miserablemuggyoppressivehumidcomfortablehumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan00009010
Feb00008515
Mar00017920
Apr10257319
May12516715
Jun131037490
Jul682540200
Aug692432300
Sep24720680
Oct0017874
Nov00048610
Dec0001918

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.

Wind in São Francisco do Guaporé is steady company: average speeds sit near 6 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmJul 24 · 7 km/hMar 23 · 5 km/h
Wind speed (km/h)Feels
Jan6calm
Feb5calm
Mar5calm
Apr5calm
May5calm
Jun6calm
Jul6calm
Aug6calm
Sep6calm
Oct6calm
Nov6calm
Dec6calm

Hazard calendar for São Francisco do Guaporé

In seasonPeak

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

São Francisco do Guaporé's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit São Francisco do Guaporé

TravelBeach/poolTemperatureCloudsPrecipitation

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

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

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 13 · 5.7

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
Jan2.8poor
Feb2.9poor
Mar2.9poor
Apr3.6fair
May4.8fair
Jun5.7good
Jul5.5good
Aug4.3fair
Sep3.3poor
Oct2.9poor
Nov2.9poor
Dec2.8poor

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 Francisco do Guaporé for hot-weather activities is from late May to late August, with a peak score in the third week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 15 · 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 Francisco do Guaporé, 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 Francisco do Guaporé packs about the same all year — highs hold near 33°C. Across the year the things worth having are light clothes, rain gear and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In September, São Francisco do Guaporé sees daytime highs around 33°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

UV index (midday) in São Francisco do Guaporé 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 Francisco do Guaporé peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 22UV 15Sep 14UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul8Very high
Aug7Very high
Sep3Moderate
Oct11Extreme
Nov13Extreme
Dec14Extreme

Average hourly UV index in São Francisco do Guaporé

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 January the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 7 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
Feb8.57
Mar86.5
Apr86
May75
Jun74.5
Jul6.54
Aug62.5
Sep30
Oct85.5
Nov8.56.5
Dec8.56.5

Air quality in São Francisco do Guaporé 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 Francisco do Guaporé is worst in September — around 76 µg/m³ PM2.5 (unhealthy), about 9.4× the cleanest month (June, 8 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodUnhealthyModerateSep 1671 µg/m³Jun 98 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Moderate
Mar12Moderate
Apr9Good
May8Good
Jun8Good
Jul10Good
Aug41Poor
Sep76Unhealthy
Oct39Poor
Nov18Moderate
Dec13Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

São Francisco do Guaporé 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 Francisco do Guaporé banks about 5,917 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)
Jan508
Feb453
Mar502
Apr479
May471
Jun451
Jul466
Aug505
Sep521
Oct541
Nov506
Dec514

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 Francisco do Guaporé receives about 5.0 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.3 and 5.7 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseSep 305.7 kWhMay 244.3 kWh
Solar energy (kWh/m²)Level
Jan4.9Bright
Feb4.7Bright
Mar4.7Bright
Apr4.6Bright
May4.3Bright
Jun4.5Bright
Jul4.9Bright
Aug5.3Bright
Sep5.6Bright
Oct5.6Bright
Nov5.3Bright
Dec5.0Bright

Where is São Francisco do Guaporé?

São Francisco do Guaporé sits at 12.1°S, 63.6°W, 170 m above sea level, in Brazil. The nearest listed city is São Miguel do Guaporé, 101 km away.

Topography around São Francisco do Guaporé

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

Within 3 km, the terrain around São Francisco do Guaporé has only modest variations in elevation — a maximum elevation change of 42 m around an average of 166 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 86 m; within 80 km, significant variations in elevation — a maximum elevation change of 513 m.

The land around São Francisco do Guaporé is covered by grassland (76%) within 3 km, grassland (68%) and trees (29%) within 16 km, and trees (66%) and grassland (28%) within 80 km.

3 km
42 m
16 km
86 m
80 km
513 m
treesgrasslandcroplandartificial surfaceswetland
Nearby: São Miguel do Guaporé 101 km · Alta Floresta d'Oeste 176 km · Rolim de Moura do Guaporé 181 km · Rolim de Moura 194 km · Presidente Médici 206 km · Buritis 207 km · Ouro Preto do Oeste 207 km · Jaru 216 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 Francisco do Guaporé (-12.0522°, -63.5675°, elevation 170 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).