Ayorou climate — normals and trends
Ayorou (Niger) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 29.5 °C and it receives 231 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 (34.7 °C on average) and the coldest is January (23.4 °C). Rainfall peaks in August.
Ayorou averages 0 frost days, 337 hot days (≥ 30 °C) and 41 rainy days per year.
Ayorou 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 46.4 °C (on 2 May 2020) and the coldest 7.2 °C (on 27 January 1942).
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
AyorouTillabéri Region
- coords
- 14.73°, 0.92°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
29.5°C
Average daily high
36.2°C
Average daily low
22.9°C
Annual rainfall
231mm
Sunshine / day
11.2h
Mean relative humidity
33%
Average peak wind
19.7km/h
Seasonal range
11.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
337 d/yr
Rainy days (≥ 1 mm)
41 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.9 °C
Average feels-like low
21.6 °C
Average peak gust
34.9 km/h
Tropical nights (≥ 20 °C)
263 d/yr
Solar radiation
23.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.0 °C
since 1940
+0.4 °C per decade · r² = 0.76 · 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
46.4 °C
2 May 2020
Coldest day
7.2 °C
27 January 1942
Wettest day
162 mm
19 August 1952
Windiest day
43.3 km/h
3 May 1984
Strongest gust
68.4 km/h
30 May 1999
Hottest feels-like
47.5 °C
14 May 2010
Coldest feels-like
2.5 °C
27 January 1942
Sunniest day
12.0 h
3 June 2025
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 | 32.9 °C | +2.0 °C | 0 mm | -0 mm |
| Feb | 35.8 °C | +1.8 °C | 0 mm | -0 mm |
| Mar | 41.9 °C | +4.2 °C | 0 mm | -1 mm |
| Apr | 42.7 °C | +2.2 °C | 0 mm | -1 mm |
| May | 42.6 °C | +1.6 °C | 4 mm | -1 mm |
| Jun | 40.1 °C | +0.9 °C | 10 mm | -7 mm |
| Jul | 35.9 °C | +0.1 °C | 68 mm | +4 mm |
| Aug | 34.2 °C | +0.6 °C | 45 mm | -57 mm |
| Sep | 36.4 °C | +0.4 °C | 29 mm | -7 mm |
| Oct | 39.5 °C | +1.3 °C | 1 mm | -4 mm |
| Nov | 37.5 °C | +1.6 °C | 0 mm | -0 mm |
| Dec | 34.3 °C | +2.4 °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 Ayorou?
Ayorou has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 29.5 °C and it receives 231 mm of precipitation per year.
What is the hottest day ever recorded in Ayorou?
The hottest day measured in Ayorou between 1940 and 2025 was 2 May 2020, reaching 46.4 °C.
What is the coldest day in Ayorou?
The coldest day measured in Ayorou between 1940 and 2025 was 27 January 1942, at 7.2 °C.
Does it snow in Ayorou?
Almost never: Ayorou sees virtually no snow, with about 0 frost days per year.
Has the climate of Ayorou warmed?
Yes: Ayorou warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ayorou?
The wettest day measured in Ayorou between 1940 and 2025 was 19 August 1952, with 162 mm of rain in 24 hours.
What was the windiest day in Ayorou?
The windiest day measured in Ayorou between 1940 and 2025 was 3 May 1984, with winds reaching 43.3 km/h.
What is the warmest month in Ayorou?
The warmest month in Ayorou is May (34.7 °C on average); the coldest is January (23.4 °C).
How much does it rain in Ayorou?
Ayorou receives on average 231 mm of precipitation per year, spread over about 41 rainy days.
Is it sunny in Ayorou?
Ayorou gets on average 11.2 hours of sunshine per day, roughly 4,088 hours per year over 1940-2025.
Are there tropical nights in Ayorou?
Yes: Ayorou has on average 263 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ayorou?
In Ayorou, between 1940 and 2025, the highest apparent temperature reached 47.5 °C on 14 May 2010, and the lowest was 2.5 °C on 27 January 1942.
Compare Ayorou with another city
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Nearby cities
The climate around Ayorou