El Idrissia climate — normals and trends
El Idrissia (Algeria) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 15.6 °C and it receives 272 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 July (28.0 °C on average) and the coldest is January (5.4 °C). Rainfall peaks in April.
El Idrissia averages 24 frost days, 91 hot days (≥ 30 °C) and 60 rainy days per year.
El Idrissia has warmed by +2.8 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 36 to 12 per year over the period.
The hottest day of the period reached 41.7 °C (on 5 July 2021) and the coldest -11.3 °C (on 15 December 1967).
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
El IdrissiaDjelfa Province
- coords
- 34.45°, 2.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.6°C
Average daily high
21.3°C
Average daily low
10.2°C
Annual rainfall
272mm
Sunshine / day
10.9h
Mean relative humidity
53%
Average peak wind
18.1km/h
Seasonal range
22.6°C
Frost days (< 0 °C)
24 d/yr
Hot days (≥ 30 °C)
91 d/yr
Rainy days (≥ 1 mm)
60 d/yr
Annual snowfall
12.4 cm
Average feels-like high
18.7 °C
Average feels-like low
7.3 °C
Average peak gust
38.2 km/h
Tropical nights (≥ 20 °C)
50 d/yr
Solar radiation
19.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.61 · 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
41.7 °C
5 July 2021
Coldest day
-11.3 °C
15 December 1967
Wettest day
58 mm
19 December 1999
Windiest day
57.0 km/h
5 March 2009
Strongest gust
124.9 km/h
5 March 2009
Hottest feels-like
41.0 °C
16 July 2010
Coldest feels-like
-15.4 °C
15 December 1967
Snowiest day
29.5 cm
19 December 1999
Sunniest day
14.0 h
11 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 | 11.4 °C | +1.4 °C | 35 mm | +10 mm |
| Feb | 14.0 °C | +2.0 °C | 8 mm | -13 mm |
| Mar | 16.7 °C | +1.2 °C | 21 mm | -6 mm |
| Apr | 21.6 °C | +2.4 °C | 46 mm | +14 mm |
| May | 25.4 °C | +1.0 °C | 78 mm | +49 mm |
| Jun | 34.3 °C | +3.8 °C | 4 mm | -11 mm |
| Jul | 35.9 °C | +1.3 °C | 7 mm | +1 mm |
| Aug | 34.5 °C | +0.8 °C | 5 mm | -6 mm |
| Sep | 29.7 °C | +1.6 °C | 40 mm | +11 mm |
| Oct | 23.2 °C | +1.8 °C | 45 mm | +15 mm |
| Nov | 16.5 °C | +1.4 °C | 3 mm | -19 mm |
| Dec | 10.9 °C | +0.2 °C | 67 mm | +42 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 El Idrissia?
El Idrissia has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 15.6 °C and it receives 272 mm of precipitation per year.
What is the hottest day ever recorded in El Idrissia?
The hottest day measured in El Idrissia between 1940 and 2025 was 5 July 2021, reaching 41.7 °C.
What is the coldest day in El Idrissia?
The coldest day measured in El Idrissia between 1940 and 2025 was 15 December 1967, at -11.3 °C.
Does it snow in El Idrissia?
Yes. El Idrissia gets on average 12.4 cm of snow per year and has around 24 frost days.
Has the climate of El Idrissia warmed?
Yes: El Idrissia warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in El Idrissia?
The wettest day measured in El Idrissia between 1940 and 2025 was 19 December 1999, with 58 mm of rain in 24 hours.
What was the windiest day in El Idrissia?
The windiest day measured in El Idrissia between 1940 and 2025 was 5 March 2009, with winds reaching 57.0 km/h.
What is the warmest month in El Idrissia?
The warmest month in El Idrissia is July (28.0 °C on average); the coldest is January (5.4 °C).
How much does it rain in El Idrissia?
El Idrissia receives on average 272 mm of precipitation per year, spread over about 60 rainy days.
Is it sunny in El Idrissia?
El Idrissia gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
What is the biggest single-day snowfall in El Idrissia?
The heaviest 24-hour snowfall measured in El Idrissia between 1940 and 2025 was 19 December 1999, with 29.5 cm.
Are there tropical nights in El Idrissia?
Yes: El Idrissia has on average 50 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in El Idrissia?
In El Idrissia, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 16 July 2010, and the lowest was -15.4 °C on 15 December 1967.
Compare El Idrissia with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around El Idrissia