Alaghsas climate — normals and trends
Alaghsas (Niger) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 28.6 °C and it receives 93 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 May (34.3 °C on average) and the coldest is January (20.4 °C). Rainfall peaks in August.
Alaghsas averages 0 frost days, 295 hot days (≥ 30 °C) and 21 rainy days per year.
Alaghsas has warmed by +3.0 °C between 1940 and 2025, or +0.35 °C per decade. This trend is statistically significant.
The hottest day of the period reached 45.9 °C (on 24 May 2018) and the coldest 4.8 °C (on 3 January 1947).
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
AlaghsasAgadez
- coords
- 17.02°, 8.02°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.6°C
Average daily high
35.1°C
Average daily low
21.8°C
Annual rainfall
93mm
Sunshine / day
11.5h
Mean relative humidity
23%
Average peak wind
24.2km/h
Seasonal range
13.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
295 d/yr
Rainy days (≥ 1 mm)
21 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.7 °C
Average feels-like low
18.6 °C
Average peak gust
40.3 km/h
Tropical nights (≥ 20 °C)
241 d/yr
Solar radiation
24.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.0 °C
since 1940
+0.4 °C per decade · r² = 0.77 · 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
45.9 °C
24 May 2018
Coldest day
4.8 °C
3 January 1947
Wettest day
119 mm
21 July 2010
Windiest day
51.3 km/h
13 May 1943
Strongest gust
80.3 km/h
8 January 2015
Hottest feels-like
45.6 °C
29 May 1998
Coldest feels-like
-0.1 °C
3 January 1947
Sunniest day
13.0 h
8 June 1940
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 | 29.6 °C | +2.1 °C | 0 mm | 0 mm |
| Feb | 32.0 °C | +1.6 °C | 0 mm | 0 mm |
| Mar | 38.4 °C | +3.8 °C | 0 mm | -0 mm |
| Apr | 39.9 °C | +1.3 °C | 0 mm | -1 mm |
| May | 42.1 °C | +1.5 °C | 0 mm | -2 mm |
| Jun | 40.7 °C | +0.5 °C | 1 mm | -4 mm |
| Jul | 38.5 °C | +0.7 °C | 9 mm | -20 mm |
| Aug | 37.1 °C | +1.0 °C | 26 mm | -25 mm |
| Sep | 38.5 °C | +0.5 °C | 7 mm | +2 mm |
| Oct | 38.3 °C | +1.7 °C | 0 mm | -0 mm |
| Nov | 33.6 °C | +1.6 °C | 0 mm | 0 mm |
| Dec | 31.4 °C | +3.1 °C | 0 mm | -0 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 Alaghsas?
Alaghsas has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 28.6 °C and it receives 93 mm of precipitation per year.
What is the hottest day ever recorded in Alaghsas?
The hottest day measured in Alaghsas between 1940 and 2025 was 24 May 2018, reaching 45.9 °C.
What is the coldest day in Alaghsas?
The coldest day measured in Alaghsas between 1940 and 2025 was 3 January 1947, at 4.8 °C.
Does it snow in Alaghsas?
Almost never: Alaghsas sees virtually no snow, with about 0 frost days per year.
Has the climate of Alaghsas warmed?
Yes: Alaghsas warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alaghsas?
The wettest day measured in Alaghsas between 1940 and 2025 was 21 July 2010, with 119 mm of rain in 24 hours.
What was the windiest day in Alaghsas?
The windiest day measured in Alaghsas between 1940 and 2025 was 13 May 1943, with winds reaching 51.3 km/h.
What is the warmest month in Alaghsas?
The warmest month in Alaghsas is May (34.3 °C on average); the coldest is January (20.4 °C).
How much does it rain in Alaghsas?
Alaghsas receives on average 93 mm of precipitation per year, spread over about 21 rainy days.
Is it sunny in Alaghsas?
Alaghsas gets on average 11.5 hours of sunshine per day, roughly 4,198 hours per year over 1940-2025.
Are there tropical nights in Alaghsas?
Yes: Alaghsas has on average 241 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alaghsas?
In Alaghsas, between 1940 and 2025, the highest apparent temperature reached 45.6 °C on 29 May 1998, and the lowest was -0.1 °C on 3 January 1947.
Compare Alaghsas with another city
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Nearby cities
The climate around Alaghsas