Ouenza climate — normals and trends
Ouenza (Algeria) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 16.3 °C and it receives 360 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 (26.5 °C on average) and the coldest is January (7.6 °C). Rainfall peaks in March.
Ouenza averages 10 frost days, 90 hot days (≥ 30 °C) and 76 rainy days per year.
Ouenza has warmed by +3.1 °C between 1940 and 2025, or +0.37 °C per decade. This trend is statistically significant.
The number of frost days there went from about 18 to 2 per year over the period.
The hottest day of the period reached 44.2 °C (on 29 July 2023) and the coldest -7.8 °C (on 2 February 1999).
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
OuenzaTébessa Province
- coords
- 35.95°, 8.13°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.3°C
Average daily high
22.6°C
Average daily low
10.7°C
Annual rainfall
360mm
Sunshine / day
10.3h
Mean relative humidity
62%
Average peak wind
14.1km/h
Seasonal range
18.9°C
Frost days (< 0 °C)
10 d/yr
Hot days (≥ 30 °C)
90 d/yr
Rainy days (≥ 1 mm)
76 d/yr
Annual snowfall
3.4 cm
Average feels-like high
21.4 °C
Average feels-like low
9.2 °C
Average peak gust
33.3 km/h
Tropical nights (≥ 20 °C)
32 d/yr
Solar radiation
17.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.72 · 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
44.2 °C
29 July 2023
Coldest day
-7.8 °C
2 February 1999
Wettest day
69 mm
11 January 2003
Windiest day
40.9 km/h
1 March 1958
Strongest gust
95.4 km/h
19 January 2005
Hottest feels-like
45.0 °C
11 July 2012
Coldest feels-like
-12.3 °C
31 December 1940
Snowiest day
13.3 cm
31 December 2014
Sunniest day
13.7 h
26 June 2025
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 | 15.1 °C | +2.4 °C | 55 mm | +20 mm |
| Feb | 15.5 °C | +1.5 °C | 36 mm | +1 mm |
| Mar | 19.6 °C | +2.8 °C | 28 mm | -16 mm |
| Apr | 22.4 °C | +2.2 °C | 59 mm | +16 mm |
| May | 25.8 °C | +0.6 °C | 64 mm | +31 mm |
| Jun | 34.3 °C | +3.9 °C | 5 mm | -15 mm |
| Jul | 35.6 °C | +1.6 °C | 12 mm | +2 mm |
| Aug | 34.7 °C | +1.1 °C | 6 mm | -9 mm |
| Sep | 31.0 °C | +1.9 °C | 44 mm | +12 mm |
| Oct | 24.9 °C | +1.2 °C | 16 mm | -16 mm |
| Nov | 19.3 °C | +1.4 °C | 7 mm | -22 mm |
| Dec | 15.1 °C | +1.4 °C | 26 mm | -7 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 Ouenza?
Ouenza has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 16.3 °C and it receives 360 mm of precipitation per year.
What is the hottest day ever recorded in Ouenza?
The hottest day measured in Ouenza between 1940 and 2025 was 29 July 2023, reaching 44.2 °C.
What is the coldest day in Ouenza?
The coldest day measured in Ouenza between 1940 and 2025 was 2 February 1999, at -7.8 °C.
Does it snow in Ouenza?
Yes. Ouenza gets on average 3.4 cm of snow per year and has around 10 frost days.
Has the climate of Ouenza warmed?
Yes: Ouenza warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ouenza?
The wettest day measured in Ouenza between 1940 and 2025 was 11 January 2003, with 69 mm of rain in 24 hours.
What was the windiest day in Ouenza?
The windiest day measured in Ouenza between 1940 and 2025 was 1 March 1958, with winds reaching 40.9 km/h.
What is the warmest month in Ouenza?
The warmest month in Ouenza is July (26.5 °C on average); the coldest is January (7.6 °C).
How much does it rain in Ouenza?
Ouenza receives on average 360 mm of precipitation per year, spread over about 76 rainy days.
Is it sunny in Ouenza?
Ouenza gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ouenza?
The heaviest 24-hour snowfall measured in Ouenza between 1940 and 2025 was 31 December 2014, with 13.3 cm.
Are there tropical nights in Ouenza?
Yes: Ouenza has on average 32 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ouenza?
In Ouenza, between 1940 and 2025, the highest apparent temperature reached 45.0 °C on 11 July 2012, and the lowest was -12.3 °C on 31 December 1940.
Compare Ouenza with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ouenza