Barreirinha climate — normals and trends
Barreirinha (Brazil) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 27.0 °C and it receives 2,544 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 (28.3 °C on average) and the coldest is January (26.2 °C). Rainfall peaks in March.
Barreirinha averages 0 frost days, 159 hot days (≥ 30 °C) and 279 rainy days per year.
Barreirinha has warmed by +1.2 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.8 °C (on 9 November 1997) and the coldest 20.2 °C (on 20 July 1981).
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
BarreirinhaAmazonas
- coords
- -2.79°, -57.07°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.0°C
Average daily high
29.7°C
Average daily low
24.8°C
Annual rainfall
2,544mm
Sunshine / day
9.3h
Mean relative humidity
85%
Average peak wind
9.7km/h
Seasonal range
2.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
159 d/yr
Rainy days (≥ 1 mm)
279 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.8 °C
Average feels-like low
29.6 °C
Average peak gust
26.4 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
16.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.2 °C per decade · r² = 0.45 · p = < 0.001
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
36.8 °C
9 November 1997
Coldest day
20.2 °C
20 July 1981
Wettest day
190 mm
15 February 2025
Windiest day
21.1 km/h
16 January 1965
Strongest gust
51.8 km/h
18 December 2015
Hottest feels-like
43.1 °C
8 November 1997
Coldest feels-like
21.6 °C
20 July 1981
Sunniest day
12.0 h
15 November 2003
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 | 29.7 °C | +1.0 °C | 323 mm | +1 mm |
| Feb | 28.9 °C | +0.2 °C | 536 mm | +211 mm |
| Mar | 28.8 °C | +0.1 °C | 321 mm | -27 mm |
| Apr | 30.0 °C | +1.2 °C | 282 mm | -44 mm |
| May | 30.2 °C | +1.2 °C | 172 mm | -87 mm |
| Jun | 29.9 °C | +0.5 °C | 144 mm | -3 mm |
| Jul | 30.4 °C | +0.6 °C | 76 mm | -30 mm |
| Aug | 31.1 °C | +0.4 °C | 84 mm | -6 mm |
| Sep | 32.4 °C | +1.1 °C | 17 mm | -79 mm |
| Oct | 32.0 °C | +0.5 °C | 81 mm | -30 mm |
| Nov | 31.7 °C | +1.1 °C | 145 mm | -16 mm |
| Dec | 30.0 °C | +0.5 °C | 350 mm | +96 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 Barreirinha?
Barreirinha has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 27.0 °C and it receives 2,544 mm of precipitation per year.
What is the hottest day ever recorded in Barreirinha?
The hottest day measured in Barreirinha between 1940 and 2025 was 9 November 1997, reaching 36.8 °C.
What is the coldest day in Barreirinha?
The coldest day measured in Barreirinha between 1940 and 2025 was 20 July 1981, at 20.2 °C.
Does it snow in Barreirinha?
Almost never: Barreirinha sees virtually no snow, with about 0 frost days per year.
Has the climate of Barreirinha warmed?
Yes: Barreirinha warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Barreirinha?
The wettest day measured in Barreirinha between 1940 and 2025 was 15 February 2025, with 190 mm of rain in 24 hours.
What was the windiest day in Barreirinha?
The windiest day measured in Barreirinha between 1940 and 2025 was 16 January 1965, with winds reaching 21.1 km/h.
What is the warmest month in Barreirinha?
The warmest month in Barreirinha is October (28.3 °C on average); the coldest is January (26.2 °C).
How much does it rain in Barreirinha?
Barreirinha receives on average 2,544 mm of precipitation per year, spread over about 279 rainy days.
Is it sunny in Barreirinha?
Barreirinha gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
Are there tropical nights in Barreirinha?
Yes: Barreirinha has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Barreirinha?
In Barreirinha, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 8 November 1997, and the lowest was 21.6 °C on 20 July 1981.
Compare Barreirinha with another city
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Nearby cities
The climate around Barreirinha