Barreiras climate — normals and trends
Barreiras (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.8 °C and it receives 894 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is October (27.2 °C on average) and the coldest is July (23.3 °C). Rainfall peaks in December.
Barreiras averages 0 frost days, 198 hot days (≥ 30 °C) and 107 rainy days per year.
Barreiras has warmed by +0.7 °C between 1940 and 2025, or +0.08 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.5 °C (on 22 October 2015) and the coldest 10.0 °C (on 17 June 2022).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
BarreirasEstado de Bahia
- coords
- -12.15°, -44.99°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.8°C
Average daily high
30.4°C
Average daily low
19.7°C
Annual rainfall
894mm
Sunshine / day
10.5h
Mean relative humidity
63%
Average peak wind
10.9km/h
Seasonal range
3.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
198 d/yr
Rainy days (≥ 1 mm)
107 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.1 °C
Average feels-like low
20.9 °C
Average peak gust
28.3 km/h
Tropical nights (≥ 20 °C)
185 d/yr
Solar radiation
20.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.7 °C
since 1940
+0.1 °C per decade · r² = 0.09 · p = 0.006
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
39.5 °C
22 October 2015
Coldest day
10.0 °C
17 June 2022
Wettest day
127 mm
7 February 1966
Windiest day
25.6 km/h
13 July 1985
Strongest gust
57.2 km/h
27 December 1967
Hottest feels-like
43.4 °C
5 October 2015
Coldest feels-like
8.3 °C
17 June 2022
Sunniest day
12.5 h
15 November 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.8 °C | +0.2 °C | 169 mm | +23 mm |
| Feb | 31.4 °C | +2.0 °C | 12 mm | -113 mm |
| Mar | 32.6 °C | +3.4 °C | 36 mm | -110 mm |
| Apr | 31.8 °C | +2.5 °C | 46 mm | -31 mm |
| May | 30.6 °C | +1.0 °C | 48 mm | +28 mm |
| Jun | 31.6 °C | +2.1 °C | 0 mm | -2 mm |
| Jul | 31.1 °C | +1.5 °C | 0 mm | -1 mm |
| Aug | 33.1 °C | +1.8 °C | 0 mm | -1 mm |
| Sep | 35.1 °C | +1.9 °C | 3 mm | -5 mm |
| Oct | 35.1 °C | +2.0 °C | 8 mm | -51 mm |
| Nov | 32.0 °C | +1.3 °C | 126 mm | -28 mm |
| Dec | 30.1 °C | +0.3 °C | 103 mm | -52 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Barreiras?
Barreiras has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.8 °C and it receives 894 mm of precipitation per year.
What is the hottest day ever recorded in Barreiras?
The hottest day measured in Barreiras between 1940 and 2025 was 22 October 2015, reaching 39.5 °C.
What is the coldest day in Barreiras?
The coldest day measured in Barreiras between 1940 and 2025 was 17 June 2022, at 10.0 °C.
Does it snow in Barreiras?
Almost never: Barreiras sees virtually no snow, with about 0 frost days per year.
Has the climate of Barreiras warmed?
Yes: Barreiras warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Barreiras?
The wettest day measured in Barreiras between 1940 and 2025 was 7 February 1966, with 127 mm of rain in 24 hours.
What was the windiest day in Barreiras?
The windiest day measured in Barreiras between 1940 and 2025 was 13 July 1985, with winds reaching 25.6 km/h.
What is the warmest month in Barreiras?
The warmest month in Barreiras is October (27.2 °C on average); the coldest is July (23.3 °C).
How much does it rain in Barreiras?
Barreiras receives on average 894 mm of precipitation per year, spread over about 107 rainy days.
Is it sunny in Barreiras?
Barreiras gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
Are there tropical nights in Barreiras?
Yes: Barreiras has on average 185 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Barreiras?
In Barreiras, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 5 October 2015, and the lowest was 8.3 °C on 17 June 2022.
Compare Barreiras with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Barreiras