Zaghouan climate — normals and trends
Zaghouan (Tunisia) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 18.2 °C and it receives 361 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 (26.7 °C on average) and the coldest is January (10.8 °C). Rainfall peaks in October.
Zaghouan averages 0 frost days, 80 hot days (≥ 30 °C) and 64 rainy days per year.
Zaghouan has warmed by +2.3 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The hottest day of the period reached 46.3 °C (on 8 August 1945) and the coldest -2.1 °C (on 16 January 1978).
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
ZaghouanZaghouan Governorate
- coords
- 36.40°, 10.14°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.2°C
Average daily high
23.3°C
Average daily low
13.8°C
Annual rainfall
361mm
Sunshine / day
10.7h
Mean relative humidity
70%
Average peak wind
16.4km/h
Seasonal range
15.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
80 d/yr
Rainy days (≥ 1 mm)
64 d/yr
Annual snowfall
0.0 cm
Average feels-like high
22.9 °C
Average feels-like low
13.1 °C
Average peak gust
38.1 km/h
Tropical nights (≥ 20 °C)
69 d/yr
Solar radiation
17.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
46.3 °C
8 August 1945
Coldest day
-2.1 °C
16 January 1978
Wettest day
88 mm
22 October 1969
Windiest day
46.2 km/h
30 January 1948
Strongest gust
112.7 km/h
31 December 2000
Hottest feels-like
46.9 °C
23 July 2023
Coldest feels-like
-5.8 °C
16 January 1978
Snowiest day
0.1 cm
1 February 1999
Sunniest day
14.0 h
19 June 1941
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 | 17.2 °C | +2.2 °C | 66 mm | +30 mm |
| Feb | 16.7 °C | +0.9 °C | 58 mm | +18 mm |
| Mar | 19.6 °C | +1.6 °C | 32 mm | -12 mm |
| Apr | 21.7 °C | +1.0 °C | 59 mm | +18 mm |
| May | 26.1 °C | +1.1 °C | 30 mm | +8 mm |
| Jun | 32.9 °C | +3.4 °C | 3 mm | -6 mm |
| Jul | 34.7 °C | +2.0 °C | 3 mm | +0 mm |
| Aug | 33.5 °C | +0.8 °C | 7 mm | -2 mm |
| Sep | 31.0 °C | +1.7 °C | 33 mm | -2 mm |
| Oct | 26.7 °C | +1.9 °C | 11 mm | -39 mm |
| Nov | 21.3 °C | +1.3 °C | 9 mm | -26 mm |
| Dec | 17.6 °C | +1.5 °C | 41 mm | +2 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 Zaghouan?
Zaghouan has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 18.2 °C and it receives 361 mm of precipitation per year.
What is the hottest day ever recorded in Zaghouan?
The hottest day measured in Zaghouan between 1940 and 2025 was 8 August 1945, reaching 46.3 °C.
What is the coldest day in Zaghouan?
The coldest day measured in Zaghouan between 1940 and 2025 was 16 January 1978, at -2.1 °C.
Does it snow in Zaghouan?
Almost never: Zaghouan sees virtually no snow, with about 0 frost days per year.
Has the climate of Zaghouan warmed?
Yes: Zaghouan warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zaghouan?
The wettest day measured in Zaghouan between 1940 and 2025 was 22 October 1969, with 88 mm of rain in 24 hours.
What was the windiest day in Zaghouan?
The windiest day measured in Zaghouan between 1940 and 2025 was 30 January 1948, with winds reaching 46.2 km/h.
What is the warmest month in Zaghouan?
The warmest month in Zaghouan is August (26.7 °C on average); the coldest is January (10.8 °C).
How much does it rain in Zaghouan?
Zaghouan receives on average 361 mm of precipitation per year, spread over about 64 rainy days.
Is it sunny in Zaghouan?
Zaghouan gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
What is the biggest single-day snowfall in Zaghouan?
The heaviest 24-hour snowfall measured in Zaghouan between 1940 and 2025 was 1 February 1999, with 0.1 cm.
Are there tropical nights in Zaghouan?
Yes: Zaghouan has on average 69 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zaghouan?
In Zaghouan, between 1940 and 2025, the highest apparent temperature reached 46.9 °C on 23 July 2023, and the lowest was -5.8 °C on 16 January 1978.
Compare Zaghouan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zaghouan