Climate and average weather in São Francisco de Assis

In São Francisco de Assis, the summers are humid, hot, showery, and partly cloudy and the winters are mild and partly cloudy.

Best: mid March to late November

Over the course of the year, the temperature in São Francisco de Assis typically varies from 10°C to 31°C, and is rarely below 3°C or above 36°C. January is the hottest month of the year, while July is the coldest.

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

Hottest
Jan
31°
Coldest
Jul
10°
Wettest
Oct
212 mm
Driest
May
116 mm
Rain / yr
1665 mm
121 wet days
Daylight
10.1–13.9 h
shortest–longest
Elevation
134 m
29.6°S
Clearest
Aug
48% cloud

São Francisco de Assis is settlement in Brazil.

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

São Francisco de Assis 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 March to late November.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 4.1 months, from November 19 to March 24, with daily high temperatures above 28°C. The hottest month of the year in São Francisco de Assis is January, with an average high of 31°C and low of 21°C.

The cool season lasts 2.9 months, from May 19 to August 14, with daily high temperatures below 21°C. The coldest month of the year in São Francisco de Assis is July, with an average low of 10°C and high of 19°C.

Days typically run about 10°C warmer than nights year-round.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3121
Feb3020
Mar2919
Apr2616
May2213
Jun2011
Jul1910
Aug2111
Sep2313
Oct2515
Nov2817
Dec3019

How hot and cold São Francisco de Assis 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 de Assis feels like about 33°C (around January 4). About 42 days a year carry some heat stress, peaking in January.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan32312021
Feb31302020
Mar30291919
Apr26261616
May22221313
Jun20201111
Jul1919910
Aug21211111
Sep23231313
Oct25251515
Nov28281717
Dec31301919

Average hourly temperature in São Francisco de Assis

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 January afternoons, near 31°C, and coldest before dawn in July, near 10°C.

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

São Francisco de Assis 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° / 21°14912.113.74.3
Feb30° / 20°13211.513.14.7
Mar29° / 19°12110.212.25.7
Apr26° / 16°1489.811.36.9
May22° / 13°1168.610.56.8
Jun20° / 11°1289.610.16.3
Jul19° / 10°1249.410.36.4
Aug21° / 11°1198.410.97.0
Sep23° / 13°1449.811.86.8
Oct25° / 15°21211.612.76.6
Nov28° / 17°1399.513.56.2
Dec30° / 19°13610.213.94.9

Chance of rain

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

São Francisco de Assis gets about 1665 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 2.9 months, from around Dec 18 to Mar 15, peaking in February at about 42% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 13.

October is the wettest month by volume, with 212 mm over about 12 wet days; May is the driest, with 116 mm.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetFeb 1 · 42%Aug 13 · 26%
Rain on a day (%)Rain days
Jan3912
Feb4112
Mar3410
Apr3210
May289
Jun3210
Jul309
Aug278
Sep3310
Oct3712
Nov3210
Dec3310

Monthly rainfall

Over a full year, São Francisco de Assis collects about 1665 mm of rain across 121 wet days — roughly 139 mm in an average month.

It doesn’t fall evenly. October is the wettest month with 212 mm, while May is the driest at just 116 mm. The three wettest months alone bring about 30% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec149132121148116128124119144212139136
Rainfall (mm)Rain days
Jan14912
Feb13212
Mar12110
Apr14810
May1169
Jun12810
Jul1249
Aug1198
Sep14410
Oct21212
Nov13910
Dec13610

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In São Francisco de Assis, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around November 8 and lasts for 5.5 months, ending around April 22. The clearest month is March, when the sky is clear, mostly clear, or partly cloudy 60% of the time on average.

The cloudier part of the year begins around September 1 and lasts for 2.2 months, ending around November 7. The cloudiest month is October, when it is overcast or mostly cloudy 54% 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%JanFebMarAprMayJunJulAugSepOctNovDecMar 19 · 61%Oct 12 · 44%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan5941
Feb5941
Mar6040
Apr5545
May4852
Jun4753
Jul5347
Aug5743
Sep5050
Oct4654
Nov5644
Dec5743

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 13 h 54 min of light; the shortest, around June 11, only 10 h 06 min — a swing of roughly 3 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan13.76:598:41
Feb13.17:238:27
Mar12.27:447:57
Apr11.38:027:19
May10.58:216:52
Jun10.18:376:44
Jul10.38:386:54
Aug10.98:177:12
Sep11.87:407:30
Oct12.77:047:47
Nov13.56:418:11
Dec13.96:408:33

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 de Assis averages about 12 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 10 and 14 days.

The sunnier stretch runs 1.7 months, from around Jul 13 to Sep 3. The sunniest month is August, with roughly 14 sunny days (mixed).

The greyest month is June, down near 10 sunny days — about 26% fewer than the August peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightAug 2214 daysJun 2210 days
Sunny daysSky
Jan13Mixed
Feb12Mixed
Mar14Mixed
Apr13Mixed
May11Mixed
Jun10Mixed
Jul13Mixed
Aug14Mixed
Sep11Mixed
Oct11Mixed
Nov13Mixed
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.

In São Francisco de Assis, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 6.1 months, from around October 18 to April 22. The muggiest month is January, when the air feels humid, muggy or worse about 85% of the time.

The most comfortable stretch runs from around April 23 to October 17, and July is the most comfortable month — the air is dry or comfortable 87% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 24 · 90%Jan 31 · 12%oppressivemuggydrycomfortablehumidhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan4112035281
Feb4112035301
Mar7162734150
Apr2522242550
May482419900
Jun572217400
Jul662211100
Aug612315100
Sep492520600
Oct2926261810
Nov2027252440
Dec11192530141

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 de Assis is steady company: average speeds sit near 13 km/hlight breeze — in every month of the year, with no meaningful windy or calm season.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeSep 6 · 15 km/hApr 29 · 12 km/h
Wind speed (km/h)Feels
Jan13light breeze
Feb12calm
Mar12calm
Apr12calm
May12calm
Jun13light breeze
Jul13light breeze
Aug14light breeze
Sep14light breeze
Oct14light breeze
Nov14light breeze
Dec13light breeze

Best time to visit São Francisco de Assis

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid November, São Francisco de Assis 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 de Assis for general outdoor tourist activities is from mid March to late November, with a peak score in the last week of April.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationApr 30 · 7.1

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
Jan4.3fair
Feb4.7fair
Mar5.7good
Apr6.9good
May6.8good
Jun6.3good
Jul6.4good
Aug7.0good
Sep6.8good
Oct6.6good
Nov6.2good
Dec4.9fair

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 de Assis for hot-weather activities is from early October to early May, with a peak score in the last week of November.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationNov 26 · 7.2

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 de Assis, 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.

For a warm-season trip around January (highs near 31°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 19°C), pack rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, São Francisco de Assis sees daytime highs around 31°C and nights near 21°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

UV index (midday) in São Francisco de Assis 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 de Assis peaks around January 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighExtremeJan 19UV 13Jun 18UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar10Very high
Apr8Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct5High
Nov11Extreme
Dec12Extreme

Average hourly UV index in São Francisco de Assis

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 9 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)
Jan97
Feb8.56.5
Mar7.55
Apr6.53.5
May40
Jun20
Jul3.50
Aug4.50
Sep6.53
Oct60
Nov8.56
Dec8.56.5
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

São Francisco de Assis 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
Jun980
Jul960
Aug980
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 de Assis banks about 3,751 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,0003,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan489
Feb424
Mar428
Apr322
May221
Jun157
Jul140
Aug196
Sep232
Oct314
Nov371
Dec458

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 de Assis receives about 4.7 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.4 and 6.9 kWh/m².

The brighter stretch of the year lasts 6.1 months, from around Sep 24 to Mar 27. The brightest month is December, averaging about 6.9 kWh/m² (intense).

The dimmest month is June, down near 2.5 kWh/m² — roughly 64% less than the December peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 96.9 kWhJun 232.4 kWh
Solar energy (kWh/m²)Level
Jan6.7Intense
Feb6.0Bright
Mar5.2Bright
Apr4.0Moderate
May3.0Moderate
Jun2.5Moderate
Jul2.8Moderate
Aug3.7Moderate
Sep4.5Bright
Oct5.3Bright
Nov6.6Intense
Dec6.9Intense

Where is São Francisco de Assis?

São Francisco de Assis sits at 29.6°S, 55.1°W, 134 m above sea level, in Brazil. The nearest listed city is Santiago, 47 km away.

Topography around São Francisco de Assis

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

Within 3 km, the terrain around São Francisco de Assis has only modest variations in elevation — a maximum elevation change of 137 m around an average of 132 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 320 m; within 80 km, significant variations in elevation — a maximum elevation change of 398 m.

The land around São Francisco de Assis is covered by grassland (32%), cropland (31%) and trees (27%) within 3 km, grassland (37%), trees (31%) and cropland (30%) within 16 km, and grassland (49%) and cropland (32%) within 80 km.

3 km
137 m
16 km
320 m
80 km
398 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Santiago 47 km · Alegrete 69 km · Rosário do Sul 81 km · São Pedro do Sul 92 km · São Gabriel 117 km · São Luiz Gonzaga 128 km · Santa Maria 129 km · São Borja 130 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 de Assis (-29.5503°, -55.1311°, elevation 134 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).