Climate Insights for Campo Maior

Campo Maior, Piauí, Brazil

Hottest
October
38°C peak
Coldest
February
24°C low
Wettest
March
340mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Campo Maior is hot. The average annual temperature is 29°C and approximately 1228mm of precipitation falls per year. March is the wettest month, receiving around 340mm of rainfall. Campo Maior 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: 33° Average: 28° Min: 24° Feb Max: 32° Average: 27° Min: 24° Mar Max: 32° Average: 27° Min: 24° Apr Max: 32° Average: 27° Min: 24° May Max: 33° Average: 28° Min: 24° Jun Max: 34° Average: 29° Min: 24° Jul Max: 34° Average: 29° Min: 24° Aug Max: 36° Average: 30° Min: 25° Sep Max: 37° Average: 32° Min: 26° Oct Max: 38° Average: 32° Min: 26° Nov Max: 37° Average: 32° Min: 26° Dec Max: 35° Average: 30° Min: 25°
Max
Average
Min

Campo Maior sees moderate temperature variation throughout the year, ranging from 24°C to 38°C. October is the hottest month, with daytime highs reaching 38°C and an average of 32°C. February is the coolest month, with minimum temperatures around 24°C and an average of 27°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 220mm Feb Precipitation: 274mm Mar Precipitation: 340mm Apr Precipitation: 210mm May Precipitation: 55mm Jun Precipitation: 5mm Jul Precipitation: 10mm Aug Precipitation: 2mm Sep Precipitation: 1mm Oct Precipitation: 7mm Nov Precipitation: 32mm Dec Precipitation: 72mm
Precipitation

Campo Maior is a fairly wet location, receiving approximately 1228mm of precipitation annually, which averages out to around 102mm per month. The wettest month is March, averaging 340mm of rainfall. February and January also tend to see above-average precipitation. The driest month is September, with just 1mm. That's 339mm less than March, 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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 2km/h Feb Wind Speed: 2km/h Mar Wind Speed: 2km/h Apr Wind Speed: 2km/h May Wind Speed: 2km/h Jun Wind Speed: 3km/h Jul Wind Speed: 3km/h Aug Wind Speed: 3km/h Sep Wind Speed: 3km/h Oct Wind Speed: 3km/h Nov Wind Speed: 3km/h Dec Wind Speed: 3km/h
Wind Speed

Campo Maior is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

Seasons

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

91 days until Spring

It is currently winter in Campo Maior, which began on June 21, 2026. Campo Maior sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in October at around 38°C, while the coldest stretch bottoms out in February near 24°C. Spring is next, beginning on September 23, 2026 — 91 days from now.

Spring

Temperatures range from 26 to 38°C. Precipitation is minimal, with only around 40mm for the entire season. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 24 to 35°C. Rainfall is heavy, totalling around 566mm across the season with a monthly average of 189mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 24 to 33°C. Rainfall is heavy, totalling around 605mm across the season with a monthly average of 202mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 24 to 36°C. Precipitation is minimal, with only around 17mm for the entire season. Winds are generally light, averaging 3km/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 Campo Maior 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
24 °C
33 °C
2 km/h
220 mm
0 cm
Feb
24 °C
32 °C
2 km/h
274 mm
0 cm
Mar
24 °C
32 °C
2 km/h
340 mm
0 cm
Apr
24 °C
32 °C
2 km/h
210 mm
0 cm
May
24 °C
33 °C
2 km/h
55 mm
0 cm
Jun Current
24 °C
34 °C
3 km/h
5 mm
0 cm
Jul
24 °C
34 °C
3 km/h
10 mm
0 cm
Aug
25 °C
36 °C
3 km/h
2 mm
0 cm
Sep
26 °C
37 °C
3 km/h
1 mm
0 cm
Oct
26 °C
38 °C
3 km/h
7 mm
0 cm
Nov
26 °C
37 °C
3 km/h
32 mm
0 cm
Dec
25 °C
35 °C
3 km/h
72 mm
0 cm
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