Arlit climate — normals and trends
Arlit (Niger) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 28.8 °C and it receives 42 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 (35.3 °C on average) and the coldest is January (19.4 °C). Rainfall peaks in August.
Arlit averages 0 frost days, 296 hot days (≥ 30 °C) and 11 rainy days per year.
Arlit has warmed by +3.1 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The hottest day of the period reached 47.1 °C (on 7 June 2024) and the coldest 2.5 °C (on 12 January 1995).
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
ArlitAgadez
- coords
- 18.74°, 7.39°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.8°C
Average daily high
35.7°C
Average daily low
20.9°C
Annual rainfall
42mm
Sunshine / day
11.5h
Mean relative humidity
20%
Average peak wind
19.1km/h
Seasonal range
15.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
296 d/yr
Rainy days (≥ 1 mm)
11 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.1 °C
Average feels-like low
17.7 °C
Average peak gust
31.1 km/h
Tropical nights (≥ 20 °C)
215 d/yr
Solar radiation
24.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.79 · 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
47.1 °C
7 June 2024
Coldest day
2.5 °C
12 January 1995
Wettest day
42 mm
19 August 1956
Windiest day
47.5 km/h
25 March 1997
Strongest gust
74.5 km/h
14 August 2017
Hottest feels-like
46.3 °C
7 June 2016
Coldest feels-like
-2.5 °C
12 January 1995
Sunniest day
13.0 h
24 May 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 | 30.1 °C | +2.7 °C | 0 mm | -0 mm |
| Feb | 32.1 °C | +1.8 °C | 0 mm | -0 mm |
| Mar | 39.5 °C | +5.1 °C | 0 mm | 0 mm |
| Apr | 40.7 °C | +1.9 °C | 0 mm | -0 mm |
| May | 43.2 °C | +1.9 °C | 0 mm | -2 mm |
| Jun | 42.1 °C | +0.7 °C | 4 mm | -0 mm |
| Jul | 40.7 °C | +1.1 °C | 3 mm | -8 mm |
| Aug | 39.6 °C | +1.2 °C | 17 mm | -4 mm |
| Sep | 40.0 °C | +0.8 °C | 7 mm | +3 mm |
| Oct | 39.2 °C | +2.0 °C | 0 mm | -0 mm |
| Nov | 34.3 °C | +1.9 °C | 0 mm | 0 mm |
| Dec | 31.1 °C | +2.8 °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 Arlit?
Arlit has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 28.8 °C and it receives 42 mm of precipitation per year.
What is the hottest day ever recorded in Arlit?
The hottest day measured in Arlit between 1940 and 2025 was 7 June 2024, reaching 47.1 °C.
What is the coldest day in Arlit?
The coldest day measured in Arlit between 1940 and 2025 was 12 January 1995, at 2.5 °C.
Does it snow in Arlit?
Almost never: Arlit sees virtually no snow, with about 0 frost days per year.
Has the climate of Arlit warmed?
Yes: Arlit warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Arlit?
The wettest day measured in Arlit between 1940 and 2025 was 19 August 1956, with 42 mm of rain in 24 hours.
What was the windiest day in Arlit?
The windiest day measured in Arlit between 1940 and 2025 was 25 March 1997, with winds reaching 47.5 km/h.
What is the warmest month in Arlit?
The warmest month in Arlit is June (35.3 °C on average); the coldest is January (19.4 °C).
How much does it rain in Arlit?
Arlit receives on average 42 mm of precipitation per year, spread over about 11 rainy days.
Is it sunny in Arlit?
Arlit gets on average 11.5 hours of sunshine per day, roughly 4,198 hours per year over 1940-2025.
Are there tropical nights in Arlit?
Yes: Arlit has on average 215 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Arlit?
In Arlit, between 1940 and 2025, the highest apparent temperature reached 46.3 °C on 7 June 2016, and the lowest was -2.5 °C on 12 January 1995.
Compare Arlit with another city
Pick a second city: its normals will be set against these, indicator by indicator.