Djelfa climate — normals and trends
Djelfa (Algeria) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 15.1 °C and it receives 307 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 (27.5 °C on average) and the coldest is January (5.1 °C). Rainfall peaks in April.
Djelfa averages 28 frost days, 88 hot days (≥ 30 °C) and 67 rainy days per year.
Djelfa has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 42 to 14 per year over the period.
The hottest day of the period reached 41.6 °C (on 5 July 2021) and the coldest -10.4 °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
DjelfaDjelfa Province
- coords
- 34.67°, 3.26°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.1°C
Average daily high
20.9°C
Average daily low
9.6°C
Annual rainfall
307mm
Sunshine / day
10.6h
Mean relative humidity
55%
Average peak wind
16.1km/h
Seasonal range
22.4°C
Frost days (< 0 °C)
28 d/yr
Hot days (≥ 30 °C)
88 d/yr
Rainy days (≥ 1 mm)
67 d/yr
Annual snowfall
15.1 cm
Average feels-like high
18.7 °C
Average feels-like low
6.9 °C
Average peak gust
38.3 km/h
Tropical nights (≥ 20 °C)
40 d/yr
Solar radiation
19.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.62 · 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
41.6 °C
5 July 2021
Coldest day
-10.4 °C
15 December 1967
Wettest day
54 mm
9 September 1969
Windiest day
49.6 km/h
8 March 2007
Strongest gust
121.0 km/h
5 March 2009
Hottest feels-like
41.2 °C
30 July 2023
Coldest feels-like
-14.5 °C
15 December 1967
Snowiest day
20.9 cm
5 January 1965
Sunniest day
14.0 h
20 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 | +1.7 °C | 38 mm | +8 mm |
| Feb | 13.7 °C | +2.2 °C | 8 mm | -17 mm |
| Mar | 16.6 °C | +1.6 °C | 14 mm | -18 mm |
| Apr | 21.4 °C | +2.6 °C | 57 mm | +22 mm |
| May | 25.1 °C | +1.0 °C | 81 mm | +49 mm |
| Jun | 34.2 °C | +4.0 °C | 6 mm | -13 mm |
| Jul | 35.7 °C | +1.3 °C | 7 mm | -1 mm |
| Aug | 34.3 °C | +0.8 °C | 10 mm | -3 mm |
| Sep | 29.5 °C | +1.8 °C | 43 mm | +11 mm |
| Oct | 22.6 °C | +1.5 °C | 31 mm | -0 mm |
| Nov | 16.1 °C | +1.3 °C | 8 mm | -15 mm |
| Dec | 10.8 °C | +0.4 °C | 58 mm | +30 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 Djelfa?
Djelfa has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 15.1 °C and it receives 307 mm of precipitation per year.
What is the hottest day ever recorded in Djelfa?
The hottest day measured in Djelfa between 1940 and 2025 was 5 July 2021, reaching 41.6 °C.
What is the coldest day in Djelfa?
The coldest day measured in Djelfa between 1940 and 2025 was 15 December 1967, at -10.4 °C.
Does it snow in Djelfa?
Yes. Djelfa gets on average 15.1 cm of snow per year and has around 28 frost days.
Has the climate of Djelfa warmed?
Yes: Djelfa warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Djelfa?
The wettest day measured in Djelfa between 1940 and 2025 was 9 September 1969, with 54 mm of rain in 24 hours.
What was the windiest day in Djelfa?
The windiest day measured in Djelfa between 1940 and 2025 was 8 March 2007, with winds reaching 49.6 km/h.
What is the warmest month in Djelfa?
The warmest month in Djelfa is July (27.5 °C on average); the coldest is January (5.1 °C).
How much does it rain in Djelfa?
Djelfa receives on average 307 mm of precipitation per year, spread over about 67 rainy days.
Is it sunny in Djelfa?
Djelfa gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
What is the biggest single-day snowfall in Djelfa?
The heaviest 24-hour snowfall measured in Djelfa between 1940 and 2025 was 5 January 1965, with 20.9 cm.
Are there tropical nights in Djelfa?
Yes: Djelfa has on average 40 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Djelfa?
In Djelfa, between 1940 and 2025, the highest apparent temperature reached 41.2 °C on 30 July 2023, and the lowest was -14.5 °C on 15 December 1967.
Compare Djelfa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Djelfa