Aleg climate — normals and trends
Aleg (Mauritania) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 29.6 °C and it receives 135 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 June (33.8 °C on average) and the coldest is January (23.3 °C). Rainfall peaks in August.
Aleg averages 0 frost days, 331 hot days (≥ 30 °C) and 21 rainy days per year.
Aleg has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The hottest day of the period reached 47.5 °C (on 10 June 2025) and the coldest 8.7 °C (on 8 January 1965).
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
AlegBrakna
- coords
- 17.05°, -13.91°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
29.6°C
Average daily high
36.1°C
Average daily low
23.1°C
Annual rainfall
135mm
Sunshine / day
11.1h
Mean relative humidity
33%
Average peak wind
23.2km/h
Seasonal range
10.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
331 d/yr
Rainy days (≥ 1 mm)
21 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.3 °C
Average feels-like low
21.3 °C
Average peak gust
37.4 km/h
Tropical nights (≥ 20 °C)
274 d/yr
Solar radiation
23.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.69 · 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
47.5 °C
10 June 2025
Coldest day
8.7 °C
8 January 1965
Wettest day
128 mm
1 August 2000
Windiest day
51.1 km/h
7 June 1967
Strongest gust
79.6 km/h
7 June 1967
Hottest feels-like
47.9 °C
24 June 1998
Coldest feels-like
3.1 °C
8 January 1965
Sunniest day
12.2 h
16 May 1942
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 | 31.9 °C | +1.5 °C | 0 mm | -1 mm |
| Feb | 33.4 °C | +0.5 °C | 0 mm | -1 mm |
| Mar | 36.2 °C | +0.5 °C | 0 mm | -1 mm |
| Apr | 39.8 °C | +1.5 °C | 0 mm | +0 mm |
| May | 41.9 °C | +1.4 °C | 2 mm | +1 mm |
| Jun | 40.6 °C | +0.1 °C | 0 mm | -2 mm |
| Jul | 37.5 °C | -0.3 °C | 6 mm | -8 mm |
| Aug | 35.8 °C | -0.3 °C | 71 mm | +14 mm |
| Sep | 37.2 °C | +0.3 °C | 36 mm | -6 mm |
| Oct | 40.0 °C | +1.9 °C | 1 mm | -12 mm |
| Nov | 36.7 °C | +1.4 °C | 0 mm | -1 mm |
| Dec | 29.6 °C | -1.5 °C | 9 mm | +8 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 Aleg?
Aleg has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 29.6 °C and it receives 135 mm of precipitation per year.
What is the hottest day ever recorded in Aleg?
The hottest day measured in Aleg between 1940 and 2025 was 10 June 2025, reaching 47.5 °C.
What is the coldest day in Aleg?
The coldest day measured in Aleg between 1940 and 2025 was 8 January 1965, at 8.7 °C.
Does it snow in Aleg?
Almost never: Aleg sees virtually no snow, with about 0 frost days per year.
Has the climate of Aleg warmed?
Yes: Aleg warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Aleg?
The wettest day measured in Aleg between 1940 and 2025 was 1 August 2000, with 128 mm of rain in 24 hours.
What was the windiest day in Aleg?
The windiest day measured in Aleg between 1940 and 2025 was 7 June 1967, with winds reaching 51.1 km/h.
What is the warmest month in Aleg?
The warmest month in Aleg is June (33.8 °C on average); the coldest is January (23.3 °C).
How much does it rain in Aleg?
Aleg receives on average 135 mm of precipitation per year, spread over about 21 rainy days.
Is it sunny in Aleg?
Aleg gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
Are there tropical nights in Aleg?
Yes: Aleg has on average 274 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Aleg?
In Aleg, between 1940 and 2025, the highest apparent temperature reached 47.9 °C on 24 June 1998, and the lowest was 3.1 °C on 8 January 1965.
Compare Aleg with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Aleg