Relizane climate — normals and trends
Relizane (Algeria) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 18.3 °C and it receives 401 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 August (27.8 °C on average) and the coldest is January (10.0 °C). Rainfall peaks in December.
Relizane averages 2 frost days, 107 hot days (≥ 30 °C) and 67 rainy days per year.
Relizane has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 3 to 1 per year over the period.
The hottest day of the period reached 45.6 °C (on 31 July 2001) and the coldest -3.9 °C (on 27 January 2005).
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
RelizaneRelizane Province
- coords
- 35.74°, 0.56°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.3°C
Average daily high
24.3°C
Average daily low
12.8°C
Annual rainfall
401mm
Sunshine / day
10.8h
Mean relative humidity
66%
Average peak wind
14.4km/h
Seasonal range
17.8°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
107 d/yr
Rainy days (≥ 1 mm)
67 d/yr
Annual snowfall
0.5 cm
Average feels-like high
23.9 °C
Average feels-like low
12.0 °C
Average peak gust
32.7 km/h
Tropical nights (≥ 20 °C)
60 d/yr
Solar radiation
18.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.49 · 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
45.6 °C
31 July 2001
Coldest day
-3.9 °C
27 January 2005
Wettest day
66 mm
13 November 2012
Windiest day
46.8 km/h
5 March 2009
Strongest gust
111.2 km/h
5 March 2009
Hottest feels-like
47.8 °C
10 July 2023
Coldest feels-like
-7.6 °C
27 January 2005
Snowiest day
7.5 cm
11 December 1967
Sunniest day
14.0 h
22 May 1940
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 | 17.1 °C | +2.0 °C | 50 mm | -5 mm |
| Feb | 18.9 °C | +2.4 °C | 34 mm | -14 mm |
| Mar | 21.1 °C | +2.0 °C | 46 mm | -3 mm |
| Apr | 25.3 °C | +3.5 °C | 42 mm | -4 mm |
| May | 28.1 °C | +2.3 °C | 45 mm | +13 mm |
| Jun | 36.6 °C | +5.9 °C | 2 mm | -7 mm |
| Jul | 36.1 °C | +1.3 °C | 1 mm | -0 mm |
| Aug | 36.9 °C | +2.0 °C | 2 mm | -2 mm |
| Sep | 32.7 °C | +1.8 °C | 7 mm | -10 mm |
| Oct | 28.9 °C | +3.3 °C | 6 mm | -30 mm |
| Nov | 22.0 °C | +2.1 °C | 13 mm | -38 mm |
| Dec | 16.9 °C | +0.8 °C | 74 mm | +19 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 Relizane?
Relizane has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 18.3 °C and it receives 401 mm of precipitation per year.
What is the hottest day ever recorded in Relizane?
The hottest day measured in Relizane between 1940 and 2025 was 31 July 2001, reaching 45.6 °C.
What is the coldest day in Relizane?
The coldest day measured in Relizane between 1940 and 2025 was 27 January 2005, at -3.9 °C.
Does it snow in Relizane?
Almost never: Relizane sees virtually no snow, with about 2 frost days per year.
Has the climate of Relizane warmed?
Yes: Relizane warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Relizane?
The wettest day measured in Relizane between 1940 and 2025 was 13 November 2012, with 66 mm of rain in 24 hours.
What was the windiest day in Relizane?
The windiest day measured in Relizane between 1940 and 2025 was 5 March 2009, with winds reaching 46.8 km/h.
What is the warmest month in Relizane?
The warmest month in Relizane is August (27.8 °C on average); the coldest is January (10.0 °C).
How much does it rain in Relizane?
Relizane receives on average 401 mm of precipitation per year, spread over about 67 rainy days.
Is it sunny in Relizane?
Relizane gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in Relizane?
The heaviest 24-hour snowfall measured in Relizane between 1940 and 2025 was 11 December 1967, with 7.5 cm.
Are there tropical nights in Relizane?
Yes: Relizane has on average 60 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Relizane?
In Relizane, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 10 July 2023, and the lowest was -7.6 °C on 27 January 2005.
Compare Relizane with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Relizane