Climate and average weather in São João

In São João, the weather is humid, hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around June.

Best: late August to early January

Over the course of the year, the temperature in São João typically varies from 18°C to 29°C, and is rarely below 16°C or above 31°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 João for warm-weather activities is from late August to early January.

Hottest
Jan
29°
Coldest
Jul
18°
Wettest
Jun
99 mm
Driest
Nov
27 mm
Rain / yr
711 mm
184 wet days
Daylight
11.5–12.5 h
shortest–longest
Elevation
712 m
8.9°S
Clearest
Nov
55% cloud

São João is human settlement in Brazil.

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

São João 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 August to early January.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in São João stay fairly even through the year, without a distinct hot or cool season. The warmest month is January, with an average high of 29°C and low of 20°C; the coolest is July, with an average low of 18°C and high of 24°C.

Days typically run about 7°C warmer than nights, with the widest day–night swing (around 9°C) in November.

15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2920
Feb2920
Mar2921
Apr2720
May2620
Jun2419
Jul2418
Aug2418
Sep2518
Oct2719
Nov2819
Dec2920

Average hourly temperature in São João

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 29°C, and coldest before dawn in July, near 18°C.

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

São João 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
Jan29° / 20°4613.712.55.3
Feb29° / 20°471312.35.1
Mar29° / 21°5715.812.15.0
Apr27° / 20°6816.711.85.3
May26° / 20°8319.311.65.3
Jun24° / 19°992111.55.1
Jul24° / 18°9622.211.55.0
Aug24° / 18°732011.75.3
Sep25° / 18°5215.711.96.0
Oct27° / 19°3410.812.26.5
Nov28° / 19°277.612.46.5
Dec29° / 20°288.412.55.9

Chance of rain

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

São João gets about 711 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 6.1 months, from around Mar 17 to Sep 17, peaking in July at about 73% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Dec 4.

June is the wettest month by volume, with 99 mm over about 21 wet days; November is the driest, with 27 mm.

0%10%20%30%40%50%60%70%80%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJul 25 · 73%Dec 4 · 23%
Rain on a day (%)Rain days
Jan4314
Feb4713
Mar5016
Apr5717
May6219
Jun7021
Jul7122
Aug6620
Sep5216
Oct3511
Nov258
Dec288

Monthly rainfall

Over a full year, São João collects about 711 mm of rain across 184 wet days — roughly 59 mm in an average month.

It doesn’t fall evenly. June is the wettest month with 99 mm, while November is the driest at just 27 mm. The three wettest months alone bring about 39% of the year’s total.

0255075100125JanFebMarAprMayJunJulAugSepOctNovDec464757688399967352342728
Rainfall (mm)Rain days
Jan4614
Feb4713
Mar5716
Apr6817
May8319
Jun9921
Jul9622
Aug7320
Sep5216
Oct3411
Nov278
Dec288

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In São João, 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 September 13 and lasts for 4.0 months, ending around January 11. The clearest month is November, when the sky is clear, mostly clear, or partly cloudy 60% of the time on average.

The cloudier part of the year begins around April 6 and lasts for 5.3 months, ending around September 12. The cloudiest month is July, when it is overcast or mostly cloudy 61% 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%JanFebMarAprMayJunJulAugSepOctNovDecNov 7 · 63%Aug 13 · 37%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan4951
Feb4852
Mar5248
Apr4654
May4456
Jun4357
Jul3961
Aug4060
Sep5347
Oct5842
Nov6040
Dec5842

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 25, 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)
Jan12.55:215:49
Feb12.35:315:49
Mar12.15:335:37
Apr11.85:325:20
May11.65:345:10
Jun11.55:415:10
Jul11.55:455:17
Aug11.75:385:21
Sep11.95:215:18
Oct12.25:055:16
Nov12.44:585:23
Dec12.55:065:37

Sunny days

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

São João averages about 6 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 10 days.

The sunnier stretch runs 6.8 months, from around Sep 22 to Apr 15. The sunniest month is December, with roughly 10 sunny days (mixed).

The greyest month is August, down near 3 sunny days — about 74% fewer than the December peak.

051015JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedDec 910 daysAug 182 days
Sunny daysSky
Jan7Gloomy
Feb6Gloomy
Mar7Gloomy
Apr5Gloomy
May4Gloomy
Jun3Gloomy
Jul3Gloomy
Aug3Gloomy
Sep4Gloomy
Oct7Gloomy
Nov8Mixed
Dec10Mixed

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 João 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 94% of the time. Even in January, the mildest month, the air is dry or comfortable only 0% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecoppressivemuggyhumid
Humid (%)Muggy (%)Oppressive (%)
Jan6895
Feb28711
Mar17722
Apr27424
May28612
Jun11871
Jul38620
Aug52480
Sep39610
Oct23770
Nov16830
Dec10891

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 São João is typically calm, near 11 km/h, and varies little with the seasons.

The windier part of the year lasts 6.0 months, from around Jul 16 to Jan 15. The windiest month is November, averaging about 12 km/h (light breeze).

The calmer part of the year runs from around Jan 16 to Jul 15, with March the calmest month at about 10 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmlight breezeNov 12 · 12 km/hMar 30 · 9 km/h
Wind speed (km/h)Feels
Jan11calm
Feb10calm
Mar10calm
Apr9calm
May9calm
Jun10calm
Jul11calm
Aug11calm
Sep12calm
Oct12light breeze
Nov12light breeze
Dec12calm

Best time to visit São João

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early September, São João 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 São João for general outdoor tourist activities is from late August to early January, with a peak score in the first week of November.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationNov 5 · 6.8

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
Jan5.3fair
Feb5.1fair
Mar5.0fair
Apr5.2fair
May5.2fair
Jun5.1fair
Jul5.0fair
Aug5.3fair
Sep6.0good
Oct6.5good
Nov6.5good
Dec5.9good

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 João for hot-weather activities is from late September to late March, with a peak score in the first week of December.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationDec 6 · 7.5

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 João, 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 João packs about the same all year — highs hold near 29°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 January, São João sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 14 days see rain.

UV index (midday) in São João 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 João peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 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 12UV 15Jul 14UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep13Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in São João

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
Jun75
Jul75
Aug7.55.5
Sep86
Oct86
Nov86
Dec86
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

São João 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 João banks about 4,707 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around March.

01,0002,0003,0004,0005,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan444
Feb403
Mar450
Apr417
May396
Jun346
Jul332
Aug331
Sep346
Oct393
Nov409
Dec440

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 João receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.7 and 6.3 kWh/m².

The brighter stretch of the year lasts 6.9 months, from around Sep 15 to Apr 11. The brightest month is December, averaging about 6.2 kWh/m² (intense).

The dimmest month is June, down near 3.8 kWh/m² — roughly 39% less than the December peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 36.3 kWhJun 293.7 kWh
Solar energy (kWh/m²)Level
Jan5.9Bright
Feb5.9Bright
Mar5.8Bright
Apr5.1Bright
May4.2Bright
Jun3.8Moderate
Jul3.8Moderate
Aug4.4Bright
Sep5.3Bright
Oct5.9Bright
Nov6.2Intense
Dec6.2Intense

Where is São João?

São João sits at 8.9°S, 36.4°W, 712 m above sea level, in Brazil. The nearest listed city is Garanhuns, 15 km away.

Topography around São João

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

Within 3 km, the terrain around São João has significant variations in elevation — a maximum elevation change of 255 m around an average of 729 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 488 m; within 80 km, large variations in elevation — a maximum elevation change of 1,143 m.

The land around São João is covered by grassland (41%) and cropland (34%) within 3 km, grassland (61%) and cropland (22%) within 16 km, and grassland (67%) within 80 km.

3 km
255 m
16 km
488 m
80 km
1,143 m
treesshrubsgrasslandcroplandartificial surfaces
Nearby: Garanhuns 15 km · Jupi 19 km · Canhotinho 19 km · Lajedo 24 km · Correntes 28 km · Caetés 30 km · Capoeiras 33 km · São José da Laje 37 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 João (-8.8756°, -36.3667°, elevation 712 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).