Kérou climate — normals and trends
Kérou (Benin) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.9 °C and it receives 989 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 April (30.6 °C on average) and the coldest is August (24.6 °C). Rainfall peaks in August.
Kérou averages 0 frost days, 296 hot days (≥ 30 °C) and 133 rainy days per year.
Kérou has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.3 °C (on 31 March 2024) and the coldest 12.0 °C (on 9 January 1957).
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
KérouAtakora Department
- coords
- 10.83°, 2.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.9°C
Average daily high
33.2°C
Average daily low
21.7°C
Annual rainfall
989mm
Sunshine / day
10.6h
Mean relative humidity
56%
Average peak wind
12.1km/h
Seasonal range
6.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
296 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.9 °C
Average feels-like low
22.6 °C
Average peak gust
30.1 km/h
Tropical nights (≥ 20 °C)
281 d/yr
Solar radiation
21.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.70 · 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
42.3 °C
31 March 2024
Coldest day
12.0 °C
9 January 1957
Wettest day
104 mm
1 September 2015
Windiest day
25.7 km/h
18 May 1941
Strongest gust
56.9 km/h
2 August 1942
Hottest feels-like
46.6 °C
25 April 2025
Coldest feels-like
7.6 °C
9 January 1957
Sunniest day
12.1 h
12 May 1944
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 34.1 °C | +1.1 °C | 0 mm | -1 mm |
| Feb | 36.4 °C | +1.0 °C | 0 mm | -2 mm |
| Mar | 39.4 °C | +1.9 °C | 4 mm | -8 mm |
| Apr | 38.9 °C | +1.8 °C | 20 mm | -23 mm |
| May | 35.4 °C | +0.7 °C | 43 mm | -52 mm |
| Jun | 33.5 °C | +1.5 °C | 64 mm | -48 mm |
| Jul | 29.9 °C | +0.3 °C | 277 mm | +78 mm |
| Aug | 29.0 °C | +0.2 °C | 421 mm | +150 mm |
| Sep | 30.5 °C | +0.6 °C | 178 mm | -13 mm |
| Oct | 33.2 °C | +0.7 °C | 51 mm | -8 mm |
| Nov | 35.3 °C | +1.1 °C | 0 mm | -3 mm |
| Dec | 35.1 °C | +2.0 °C | 0 mm | -1 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 Kérou?
Kérou has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 989 mm of precipitation per year.
What is the hottest day ever recorded in Kérou?
The hottest day measured in Kérou between 1940 and 2025 was 31 March 2024, reaching 42.3 °C.
What is the coldest day in Kérou?
The coldest day measured in Kérou between 1940 and 2025 was 9 January 1957, at 12.0 °C.
Does it snow in Kérou?
Almost never: Kérou sees virtually no snow, with about 0 frost days per year.
Has the climate of Kérou warmed?
Yes: Kérou warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kérou?
The wettest day measured in Kérou between 1940 and 2025 was 1 September 2015, with 104 mm of rain in 24 hours.
What was the windiest day in Kérou?
The windiest day measured in Kérou between 1940 and 2025 was 18 May 1941, with winds reaching 25.7 km/h.
What is the warmest month in Kérou?
The warmest month in Kérou is April (30.6 °C on average); the coldest is August (24.6 °C).
How much does it rain in Kérou?
Kérou receives on average 989 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Kérou?
Kérou gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
Are there tropical nights in Kérou?
Yes: Kérou has on average 281 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kérou?
In Kérou, between 1940 and 2025, the highest apparent temperature reached 46.6 °C on 25 April 2025, and the lowest was 7.6 °C on 9 January 1957.
Compare Kérou with another city
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Nearby cities
The climate around Kérou