Climate Insights for Barras

Barras, Piauí, Brazil

Hottest
October
37°C peak
Coldest
July
23°C low
Wettest
March
453mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Barras is hot. The average annual temperature is 29°C and approximately 1426mm of precipitation falls per year. March is the wettest month, receiving around 453mm of rainfall. Barras 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: 32° Average: 28° Min: 24° Jun Max: 33° Average: 28° Min: 24° Jul Max: 34° Average: 28° Min: 23° Aug Max: 35° Average: 29° Min: 23° Sep Max: 37° Average: 30° Min: 25° Oct Max: 37° Average: 31° Min: 25° Nov Max: 37° Average: 31° Min: 26° Dec Max: 36° Average: 30° Min: 25°
Max
Average
Min

Barras sees moderate temperature variation throughout the year, ranging from 23°C to 37°C. October is the hottest month, with daytime highs reaching 37°C and an average of 31°C. July is the coolest month, with minimum temperatures around 23°C and an average of 28°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 400mm 450mm 500mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 181mm Feb Precipitation: 299mm Mar Precipitation: 453mm Apr Precipitation: 296mm May Precipitation: 90mm Jun Precipitation: 20mm Jul Precipitation: 8mm Aug Precipitation: 1mm Sep Precipitation: 0mm Oct Precipitation: 4mm Nov Precipitation: 18mm Dec Precipitation: 57mm
Precipitation

Barras is a fairly wet location, receiving approximately 1426mm of precipitation annually, which averages out to around 119mm per month. The wettest month is March, averaging 453mm of rainfall. February and April also tend to see above-average precipitation. The driest month is September, with just 0mm. That's 452mm 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 10km/h 15km/h 20km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 13km/h Feb Wind Speed: 12km/h Mar Wind Speed: 11km/h Apr Wind Speed: 11km/h May Wind Speed: 12km/h Jun Wind Speed: 15km/h Jul Wind Speed: 17km/h Aug Wind Speed: 17km/h Sep Wind Speed: 18km/h Oct Wind Speed: 19km/h Nov Wind Speed: 17km/h Dec Wind Speed: 16km/h
Wind Speed

Barras is mildly breezy, with an average annual wind speed of 15km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 19km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 11km/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 16km/h in winter, 18km/h in spring, 13km/h in summer, 11km/h in autumn.

Seasons

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

89 days until Winter

It is currently autumn in Barras, which began on March 20, 2026. Barras 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 37°C, while the coldest stretch bottoms out in July near 23°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

Spring

Temperatures range from 25 to 37°C. Precipitation is minimal, with only around 22mm for the entire season. Winds are moderate at around 18km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 24 to 36°C. Rainfall is heavy, totalling around 537mm across the season with a monthly average of 179mm. Winds are generally light, averaging 13km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 838mm across the season with a monthly average of 279mm. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 23 to 35°C. Precipitation is minimal, with only around 29mm for the entire season. Winds are moderate at around 16km/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 Barras 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
13 km/h
181 mm
0 cm
Feb
24 °C
32 °C
12 km/h
299 mm
0 cm
Mar Current
24 °C
32 °C
11 km/h
453 mm
0 cm
Apr
24 °C
32 °C
11 km/h
296 mm
0 cm
May
24 °C
32 °C
12 km/h
90 mm
0 cm
Jun
24 °C
33 °C
15 km/h
20 mm
0 cm
Jul
23 °C
34 °C
17 km/h
8 mm
0 cm
Aug
23 °C
35 °C
17 km/h
1 mm
0 cm
Sep
25 °C
37 °C
18 km/h
0 mm
0 cm
Oct
25 °C
37 °C
19 km/h
4 mm
0 cm
Nov
26 °C
37 °C
17 km/h
18 mm
0 cm
Dec
25 °C
36 °C
16 km/h
57 mm
0 cm
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Metric (°C, km/h)