Climate and average weather in São Sepé

In São Sepé, the summers are humid, hot, showery, and partly cloudy and the winters are mild and partly cloudy.

Best: mid March to early December

Over the course of the year, the temperature in São Sepé typically varies from 9°C to 30°C, and is rarely below 2°C or above 35°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 Sepé for warm-weather activities is from mid March to early December.

Hottest
Jan
30°
Coldest
Jul
Wettest
Oct
191 mm
Driest
Mar
113 mm
Rain / yr
1620 mm
123 wet days
Daylight
10.1–13.9 h
shortest–longest
Elevation
96 m
30.2°S
Clearest
Dec
53% cloud

São Sepé 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 early December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 4.2 months, from November 20 to March 26, with daily high temperatures above 27°C. The hottest month of the year in São Sepé is January, with an average high of 30°C and low of 20°C.

The cool season lasts 2.9 months, from May 21 to August 16, with daily high temperatures below 20°C. The coldest month of the year in São Sepé is July, with an average low of 9°C and high of 18°C.

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

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3020
Feb3020
Mar2918
Apr2515
May2112
Jun1910
Jul189
Aug2010
Sep2212
Oct2414
Nov2716
Dec3018

Average hourly temperature in São Sepé

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 30°C, and coldest before dawn in July, near C.

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

São Sepé 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° / 20°12712.213.74.6
Feb30° / 20°11811.613.14.8
Mar29° / 18°1139.912.25.9
Apr25° / 15°136911.37.0
May21° / 12°1208.710.56.7
Jun19° / 10°1379.910.16.0
Jul18° / 1401010.36.0
Aug20° / 10°1269.410.96.5
Sep22° / 12°15910.611.86.4
Oct24° / 14°19111.612.76.6
Nov27° / 16°1259.413.56.5
Dec30° / 18°12810.413.95.2

Chance of rain

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

São Sepé gets about 1620 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 2.6 months, from around Dec 19 to Mar 8, peaking in February at about 42% chance on a given day. The drier stretch runs the rest of the year, bottoming out around May 9.

October is the wettest month by volume, with 191 mm over about 12 wet days; March is the driest, with 113 mm.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetFeb 2 · 42%May 9 · 28%
Rain on a day (%)Rain days
Jan4012
Feb4112
Mar3210
Apr309
May289
Jun3310
Jul3210
Aug319
Sep3511
Oct3712
Nov319
Dec3310

Monthly rainfall

Over a full year, São Sepé collects about 1620 mm of rain across 123 wet days — roughly 135 mm in an average month.

It doesn’t fall evenly. October is the wettest month with 191 mm, while March is the driest at just 113 mm. The three wettest months alone bring about 30% of the year’s total.

050100150200JanFebMarAprMayJunJulAugSepOctNovDec127118113136120137140126159191125128
Rainfall (mm)Rain days
Jan12712
Feb11812
Mar11310
Apr1369
May1209
Jun13710
Jul14010
Aug1269
Sep15911
Oct19112
Nov1259
Dec12810

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In São Sepé, 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 12 and lasts for 5.2 months, ending around April 19. The clearest month is December, when the sky is clear, mostly clear, or partly cloudy 56% of the time on average.

The cloudier part of the year begins around August 30 and lasts for 2.4 months, ending around November 11. The cloudiest month is October, when it is overcast or mostly cloudy 59% 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 13 · 57%Oct 9 · 39%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan5446
Feb5347
Mar5545
Apr5149
May4654
Jun4357
Jul4753
Aug5149
Sep4456
Oct4159
Nov5149
Dec5644

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 6, 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)
Jan13.76:518:36
Feb13.17:168:21
Mar12.27:377:51
Apr11.37:567:13
May10.58:166:45
Jun10.18:326:37
Jul10.38:336:47
Aug10.98:117:05
Sep11.87:347:23
Oct12.76:577:42
Nov13.56:338:06
Dec13.96:328:28

Sunny days

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

São Sepé averages about 11 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 8 and 13 days.

The sunnier stretch runs 2.4 months, from around Nov 7 to Jan 17. The sunniest month is November, with roughly 12 sunny days (mixed).

The greyest month is October, down near 9 sunny days — about 24% fewer than the November peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergloomymixedbrightNov 2913 daysOct 68 days
Sunny daysSky
Jan11Mixed
Feb10Mixed
Mar12Mixed
Apr11Mixed
May10Mixed
Jun9Mixed
Jul11Mixed
Aug12Mixed
Sep10Mixed
Oct9Mixed
Nov12Mixed
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 Sepé, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 5.9 months, from around October 23 to April 21. 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 22 to October 22, and July is the most comfortable month — the air is dry or comfortable 90% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 24 · 90%Jan 27 · 13%oppressivemuggyhumiddrycomfortablehumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan4112435261
Feb5112234271
Mar9162933140
Apr2722252330
May502520600
Jun632113200
Jul692110000
Aug622414100
Sep522519500
Oct3327261410
Nov2127272130
Dec11202630120

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 Sepé is steady company: average speeds sit near 12 km/hcalm — in every month of the year, with no meaningful windy or calm season.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeSep 30 · 13 km/hMay 8 · 11 km/h
Wind speed (km/h)Feels
Jan12calm
Feb11calm
Mar11calm
Apr11calm
May11calm
Jun11calm
Jul11calm
Aug12calm
Sep13light breeze
Oct13light breeze
Nov13light breeze
Dec12light breeze

Best time to visit São Sepé

TravelBeach/poolTemperatureCloudsPrecipitation

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

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

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationApr 25 · 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
Jan4.6fair
Feb4.8fair
Mar5.9good
Apr7.0good
May6.7good
Jun6.0good
Jul6.0good
Aug6.5good
Sep6.4good
Oct6.6good
Nov6.5good
Dec5.2fair

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 Sepé for hot-weather activities is from mid October to late April, with a peak score in the first week of December.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationDec 6 · 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 Sepé, 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 30°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 18°C), pack rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, São Sepé sees daytime highs around 30°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

UV index (midday) in São Sepé 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 Sepé peaks around January 18 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 — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 18UV 13Jun 18UV 3
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar10Extreme
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct7Very high
Nov11Extreme
Dec12Extreme

Average hourly UV index in São Sepé

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
Mar7.55.5
Apr63
May40
Jun10
Jul30
Aug4.50
Sep6.53.5
Oct73.5
Nov8.56
Dec97
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

São Sepé 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
Jul970
Aug990
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 Sepé banks about 3,450 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,0003,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan467
Feb411
Mar414
Apr305
May202
Jun126
Jul106
Aug160
Sep200
Oct282
Nov345
Dec433

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 Sepé receives about 4.6 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.4 and 6.8 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Sep 29 to Mar 27. The brightest month is December, averaging about 6.8 kWh/m² (intense).

The dimmest month is June, down near 2.4 kWh/m² — roughly 64% less than the December peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 96.8 kWhJun 242.4 kWh
Solar energy (kWh/m²)Level
Jan6.5Intense
Feb5.8Bright
Mar5.0Bright
Apr3.8Moderate
May2.9Moderate
Jun2.4Moderate
Jul2.6Moderate
Aug3.5Moderate
Sep4.2Bright
Oct5.0Bright
Nov6.4Intense
Dec6.8Intense

Where is São Sepé?

São Sepé sits at 30.2°S, 53.6°W, 96 m above sea level, in Brazil. The nearest listed city is Caçapava do Sul, 40 km away.

Topography around São Sepé

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

Within 3 km, the terrain around São Sepé has only modest variations in elevation — a maximum elevation change of 101 m around an average of 89 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 261 m; within 80 km, significant variations in elevation — a maximum elevation change of 587 m.

The land around São Sepé is covered by cropland (39%) and trees (27%) within 3 km, cropland (55%) and grassland (25%) within 16 km, and cropland (38%), grassland (33%) and trees (28%) within 80 km.

3 km
101 m
16 km
261 m
80 km
587 m
treesgrasslandcroplandartificial surfaceswaterwetland
Nearby: Caçapava do Sul 40 km · Santa Maria 58 km · Agudo 65 km · Cachoeira do Sul 66 km · São Gabriel 75 km · São Pedro do Sul 84 km · Candelária 93 km · Júlio de Castilhos 104 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 Sepé (-30.1606°, -53.5653°, elevation 96 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).