Climate Insights for São João dos Patos

São João dos Patos, Maranhão, Brazil

Hottest
September
36°C peak
Coldest
July
22°C low
Wettest
February
221mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in São João dos Patos is hot. The average annual temperature is 27°C and approximately 1022mm of precipitation falls per year. February is the wettest month, receiving around 221mm of rainfall. São João dos Patos sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 30° Average: 26° Min: 23° Feb Max: 30° Average: 26° Min: 23° Mar Max: 30° Average: 26° Min: 23° Apr Max: 31° Average: 26° Min: 23° May Max: 32° Average: 27° Min: 23° Jun Max: 32° Average: 27° Min: 23° Jul Max: 33° Average: 27° Min: 22° Aug Max: 35° Average: 28° Min: 23° Sep Max: 36° Average: 30° Min: 24° Oct Max: 36° Average: 30° Min: 25° Nov Max: 33° Average: 28° Min: 24° Dec Max: 32° Average: 27° Min: 24°
Max
Average
Min

São João dos Patos sees moderate temperature variation throughout the year, ranging from 22°C to 36°C. September is the hottest month, with daytime highs reaching 36°C and an average of 30°C. July is the coolest month, with minimum temperatures around 22°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 192mm Feb Precipitation: 221mm Mar Precipitation: 220mm Apr Precipitation: 125mm May Precipitation: 23mm Jun Precipitation: 3mm Jul Precipitation: 1mm Aug Precipitation: 1mm Sep Precipitation: 10mm Oct Precipitation: 28mm Nov Precipitation: 97mm Dec Precipitation: 99mm
Precipitation

São João dos Patos is a moderately rainy area, receiving approximately 1022mm of precipitation annually, which averages out to around 85mm per month. The wettest month is February, averaging 221mm of rainfall. March and January also tend to see above-average precipitation. The driest month is August, with just 1mm. That's 221mm less than February, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 10km/h Feb Wind Speed: 10km/h Mar Wind Speed: 10km/h Apr Wind Speed: 11km/h May Wind Speed: 14km/h Jun Wind Speed: 17km/h Jul Wind Speed: 18km/h Aug Wind Speed: 17km/h Sep Wind Speed: 16km/h Oct Wind Speed: 13km/h Nov Wind Speed: 11km/h Dec Wind Speed: 11km/h
Wind Speed

São João dos Patos is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 8km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 17km/h in winter, 13km/h in spring, 10km/h in summer, 12km/h in autumn.

Seasons

Winter
Dec 21
Spring
Sep 23
Summer
Dec 21
Autumn
Mar 20

87 days until Winter

It is currently autumn in São João dos Patos, which began on March 20, 2026. São João dos Patos sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 36°C, while the coldest stretch bottoms out in July near 22°C. Winter is next, beginning on June 21, 2026 — 87 days from now.

Spring

Temperatures range from 24 to 36°C. Rainfall is relatively light, with around 136mm over the season and a monthly average of 45mm. Winds are generally light, averaging 13km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 23 to 32°C. Rainfall is heavy, totalling around 512mm across the season with a monthly average of 171mm. Winds are generally light, averaging 10km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 23 to 32°C. Rainfall is heavy, totalling around 369mm across the season with a monthly average of 123mm. Winds are generally light, averaging 12km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 22 to 35°C. Precipitation is minimal, with only around 5mm for the entire season. Winds are moderate at around 17km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Monthly Climate Data

The table below shows monthly climate averages for São João dos Patos based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
23 °C
30 °C
10 km/h
192 mm
0 cm
Feb
23 °C
30 °C
10 km/h
221 mm
0 cm
Mar Current
23 °C
30 °C
10 km/h
220 mm
0 cm
Apr
23 °C
31 °C
11 km/h
125 mm
0 cm
May
23 °C
32 °C
14 km/h
23 mm
0 cm
Jun
23 °C
32 °C
17 km/h
3 mm
0 cm
Jul
22 °C
33 °C
18 km/h
1 mm
0 cm
Aug
23 °C
35 °C
17 km/h
1 mm
0 cm
Sep
24 °C
36 °C
16 km/h
10 mm
0 cm
Oct
25 °C
36 °C
13 km/h
28 mm
0 cm
Nov
24 °C
33 °C
11 km/h
97 mm
0 cm
Dec
24 °C
32 °C
11 km/h
99 mm
0 cm
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Metric (°C, km/h)