Mers el Kebir climate — normals and trends
Mers el Kebir (Algeria) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 18.4 °C and it receives 389 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 (25.2 °C on average) and the coldest is January (13.0 °C). Rainfall peaks in December.
Mers el Kebir averages 0 frost days, 2 hot days (≥ 30 °C) and 61 rainy days per year.
Mers el Kebir has warmed by +1.2 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.9 °C (on 31 August 1998) and the coldest 2.7 °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
Mers el KebirOran Province
- coords
- 35.73°, -0.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.4°C
Average daily high
20.3°C
Average daily low
16.6°C
Annual rainfall
389mm
Sunshine / day
11.0h
Mean relative humidity
75%
Average peak wind
23.3km/h
Seasonal range
12.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
61 d/yr
Annual snowfall
0.0 cm
Average feels-like high
20.2 °C
Average feels-like low
15.6 °C
Average peak gust
35.6 km/h
Tropical nights (≥ 20 °C)
107 d/yr
Solar radiation
18.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
33.9 °C
31 August 1998
Coldest day
2.7 °C
27 January 2005
Wettest day
91 mm
10 November 2001
Windiest day
69.0 km/h
1 December 1959
Strongest gust
113.0 km/h
1 December 1959
Hottest feels-like
37.8 °C
1 August 2020
Coldest feels-like
-2.8 °C
2 February 1954
Snowiest day
0.9 cm
11 December 1967
Sunniest day
14.0 h
18 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 | 16.5 °C | +1.6 °C | 56 mm | -0 mm |
| Feb | 16.6 °C | +1.3 °C | 33 mm | -16 mm |
| Mar | 18.2 °C | +1.7 °C | 46 mm | +2 mm |
| Apr | 19.5 °C | +1.6 °C | 22 mm | -18 mm |
| May | 22.0 °C | +1.6 °C | 34 mm | +8 mm |
| Jun | 26.4 °C | +3.0 °C | 0 mm | -7 mm |
| Jul | 27.9 °C | +1.5 °C | 2 mm | +1 mm |
| Aug | 28.0 °C | +0.7 °C | 0 mm | -2 mm |
| Sep | 25.7 °C | +0.4 °C | 4 mm | -8 mm |
| Oct | 24.0 °C | +1.8 °C | 9 mm | -25 mm |
| Nov | 20.0 °C | +1.4 °C | 18 mm | -37 mm |
| Dec | 16.2 °C | +0.3 °C | 112 mm | +48 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 Mers el Kebir?
Mers el Kebir has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 18.4 °C and it receives 389 mm of precipitation per year.
What is the hottest day ever recorded in Mers el Kebir?
The hottest day measured in Mers el Kebir between 1940 and 2025 was 31 August 1998, reaching 33.9 °C.
What is the coldest day in Mers el Kebir?
The coldest day measured in Mers el Kebir between 1940 and 2025 was 27 January 2005, at 2.7 °C.
Does it snow in Mers el Kebir?
Almost never: Mers el Kebir sees virtually no snow, with about 0 frost days per year.
Has the climate of Mers el Kebir warmed?
Yes: Mers el Kebir warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mers el Kebir?
The wettest day measured in Mers el Kebir between 1940 and 2025 was 10 November 2001, with 91 mm of rain in 24 hours.
What was the windiest day in Mers el Kebir?
The windiest day measured in Mers el Kebir between 1940 and 2025 was 1 December 1959, with winds reaching 69.0 km/h.
What is the warmest month in Mers el Kebir?
The warmest month in Mers el Kebir is August (25.2 °C on average); the coldest is January (13.0 °C).
How much does it rain in Mers el Kebir?
Mers el Kebir receives on average 389 mm of precipitation per year, spread over about 61 rainy days.
Is it sunny in Mers el Kebir?
Mers el Kebir gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mers el Kebir?
The heaviest 24-hour snowfall measured in Mers el Kebir between 1940 and 2025 was 11 December 1967, with 0.9 cm.
Are there tropical nights in Mers el Kebir?
Yes: Mers el Kebir has on average 107 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mers el Kebir?
In Mers el Kebir, between 1940 and 2025, the highest apparent temperature reached 37.8 °C on 1 August 2020, and the lowest was -2.8 °C on 2 February 1954.
Compare Mers el Kebir with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mers el Kebir