Climate and average weather in São João dos Patos

In São João dos Patos, the weather is sweltering, wet, and clear and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around March.

Best: late April to late August

Over the course of the year, the temperature in São João dos Patos typically varies from 22°C to 35°C, and is rarely below 21°C or above 37°C. September is the hottest month of the year, while February is the coldest.

Based on the travel score, the best time of year to visit São João dos Patos for warm-weather activities is from late April to late August.

Hottest
Sep
35°
Coldest
Feb
22°
Wettest
Mar
231 mm
Driest
Aug
1 mm
Rain / yr
1160 mm
137 wet days
Daylight
11.6–12.4 h
shortest–longest
Elevation
346 m
6.5°S
Clearest
Aug
26% cloud

São João dos Patos is settlement in Brazil.

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

São João dos Patos 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 April to late August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in São João dos Patos 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 24°C; the coolest is February, with an average low of 22°C and high of 30°C.

Days typically run about 9°C warmer than nights, with the widest day–night swing (around 11°C) in September.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3023
Feb3022
Mar3022
Apr3123
May3123
Jun3223
Jul3223
Aug3423
Sep3524
Oct3525
Nov3324
Dec3123

How hot and cold São João dos Patos 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 João dos Patos feels like about 37°C (around October 24). Nearly every day a year carries some heat stress, peaking in October.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan34302223
Feb34302222
Mar34302222
Apr34312323
May34312323
Jun33322323
Jul33322323
Aug34342323
Sep35352424
Oct37352525
Nov36332424
Dec35312323

Average hourly temperature in São João dos Patos

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 February, near 22°C.

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

São João dos Patos 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°22725.212.33.1
Feb30° / 22°21522.912.23.1
Mar30° / 22°23126123.0
Apr31° / 23°14219.111.93.6
May31° / 23°508.311.74.5
Jun32° / 23°61.211.65.0
Jul32° / 23°40.511.74.9
Aug34° / 23°1011.84.1
Sep35° / 24°100.8123.2
Oct35° / 25°334.712.13.0
Nov33° / 24°9611.312.33.4
Dec31° / 23°14717.312.43.5

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 dos Patos gets about 1160 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 5.6 months, from around Nov 17 to May 4, peaking in March at about 86% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 8.

March is the wettest month by volume, with 231 mm over about 26 wet days; August is the driest, with 1 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetMar 20 · 86%Aug 8 · 0%
Rain on a day (%)Rain days
Jan7925
Feb8223
Mar8426
Apr6419
May278
Jun51
Jul21
Aug00
Sep31
Oct155
Nov3711
Dec5817

Monthly rainfall

Over a full year, São João dos Patos collects about 1160 mm of rain across 137 wet days — roughly 97 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 231 mm, while August is the driest at just 1 mm. The three wettest months alone bring about 58% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec22721523114250641103396147
Rainfall (mm)Rain days
Jan22725
Feb21523
Mar23126
Apr14219
May508
Jun61
Jul41
Aug10
Sep101
Oct335
Nov9611
Dec14717

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In São João dos Patos, 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 18 and lasts for 5.7 months, ending around November 7. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 90% of the time on average.

The cloudier part of the year begins around November 8 and lasts for 6.3 months, ending around May 17. The cloudiest month is February, when it is overcast or mostly cloudy 80% 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 30 · 90%Jan 23 · 19%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2278
Feb2080
Mar2179
Apr3466
May5347
Jun7327
Jul8416
Aug9010
Sep8812
Oct7327
Nov4951
Dec3862

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 24 min of light; the shortest, around June 2, only 11 h 36 min — a swing of roughly 0 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.35:546:14
Feb12.26:036:16
Mar12.06:036:06
Apr11.95:595:51
May11.76:005:42
Jun11.66:065:44
Jul11.76:115:50
Aug11.86:055:52
Sep12.05:505:48
Oct12.15:355:44
Nov12.35:315:49
Dec12.45:406:02

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 dos Patos averages about 11 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 1 and 23 days.

The sunnier stretch runs 5.3 months, from around May 25 to Nov 2. The sunniest month is August, with roughly 23 sunny days (bright).

The greyest month is March, down near 2 sunny days — about 93% fewer than the August peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 723 daysMar 181 days
Sunny daysSky
Jan3Gloomy
Feb2Gloomy
Mar2Gloomy
Apr4Gloomy
May9Mixed
Jun14Mixed
Jul20Bright
Aug23Bright
Sep22Bright
Oct16Bright
Nov8Gloomy
Dec6Gloomy

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 João dos Patos, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 8.3 months, from around October 20 to June 29. The muggiest month is January, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around June 30 to October 19, and August is the most comfortable month — the air is dry or comfortable 49% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 18 · 50%Jan 1 · 0%muggyoppressivehumidcomfortablehumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan0003961
Feb0001972
Mar0001945
Apr0006903
May00539551
Jun04434580
Jul227561410
Aug24645510
Sep235431730
Oct0123036220
Nov01633600
Dec00014850

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 dos Patos is typically calm, near 8 km/h, and varies moderately with the seasons.

The windier part of the year lasts 5.2 months, from around May 15 to Oct 19. The windiest month is July, averaging about 12 km/h (calm).

The calmer part of the year runs from around Oct 20 to May 14, with January the calmest month at about 5 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeJul 28 · 12 km/hJan 18 · 5 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr6calm
May8calm
Jun11calm
Jul12calm
Aug12calm
Sep10calm
Oct8calm
Nov6calm
Dec6calm

Hazard calendar for São João dos Patos

In seasonPeak

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

São João dos Patos'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 São João dos Patos

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid August, São João dos Patos 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 João dos Patos for general outdoor tourist activities is from late April to mid August, with a peak score in the third week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 16 · 5.0

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
Jan3.1poor
Feb3.1poor
Mar3.1poor
Apr3.6fair
May4.5fair
Jun5.0fair
Jul4.9fair
Aug4.1fair
Sep3.2poor
Oct3.0poor
Nov3.4poor
Dec3.4poor

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 dos Patos for hot-weather activities is from mid May to late September, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 29 · 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 João dos Patos, 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 dos Patos 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, São João dos Patos sees daytime highs around 35°C and nights near 24°C. Pack light clothes and sun protection.

UV index (midday) in São João dos Patos 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 dos Patos peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 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 11UV 15Jul 24UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme

Average hourly UV index in São João dos Patos

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
Jul7.55
Aug7.55
Sep86
Oct86
Nov86
Dec85.5

Air quality in São João dos Patos 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 João dos Patos is worst in October — around 26 µg/m³ PM2.5 (moderate), about 6.3× the cleanest month (June, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 1525 µg/m³Jun 184 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar11Good
Apr10Good
May7Good
Jun4Good
Jul5Good
Aug10Good
Sep17Moderate
Oct26Moderate
Nov14Moderate
Dec13Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

São João dos Patos 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 dos Patos banks about 6,406 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)
Jan506
Feb454
Mar504
Apr496
May530
Jun522
Jul541
Aug569
Sep588
Oct609
Nov551
Dec535

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 dos Patos receives about 5.4 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.5 and 6.7 kWh/m².

The brighter stretch of the year lasts 4.9 months, from around Jul 12 to Dec 6. The brightest month is September, averaging about 6.6 kWh/m² (intense).

The dimmest month is March, down near 4.6 kWh/m² — roughly 31% less than the September peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseSep 176.7 kWhMar 224.5 kWh
Solar energy (kWh/m²)Level
Jan4.7Bright
Feb4.7Bright
Mar4.6Bright
Apr4.7Bright
May4.9Bright
Jun5.1Bright
Jul5.5Bright
Aug6.3Intense
Sep6.7Intense
Oct6.4Intense
Nov5.7Bright
Dec5.2Bright

Where is São João dos Patos?

São João dos Patos sits at 6.5°S, 43.7°W, 346 m above sea level, in Brazil. The nearest listed city is Paraibano, 32 km away.

Topography around São João dos Patos

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

Within 3 km, the terrain around São João dos Patos has only modest variations in elevation — a maximum elevation change of 172 m around an average of 347 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 336 m; within 80 km, significant variations in elevation — a maximum elevation change of 407 m.

The land around São João dos Patos is covered by trees (66%) within 3 km, trees (78%) within 16 km, and trees (72%) within 80 km.

3 km
172 m
16 km
336 m
80 km
407 m
treesshrubsgrasslandcroplandartificial surfaceswater
Nearby: Paraibano 32 km · Passagem Franca 36 km · Pastos Bons 43 km · Mirador 74 km · Buriti Bravo 75 km · Colinas 80 km · Barão de Grajaú 80 km · Floriano 81 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 dos Patos (-6.495°, -43.7022°, elevation 346 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).