Zarzis climate — normals and trends
Zarzis (Tunisia) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 20.0 °C and it receives 167 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 (27.4 °C on average) and the coldest is January (13.1 °C). Rainfall peaks in December.
Zarzis averages 0 frost days, 25 hot days (≥ 30 °C) and 29 rainy days per year.
Zarzis has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.7 °C (on 12 August 1960) and the coldest 4.7 °C (on 3 January 1942).
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
ZarzisMedenine Governorate
- coords
- 33.50°, 11.11°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
20.0°C
Average daily high
22.2°C
Average daily low
18.1°C
Annual rainfall
167mm
Sunshine / day
11.1h
Mean relative humidity
69%
Average peak wind
26.6km/h
Seasonal range
14.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
25 d/yr
Rainy days (≥ 1 mm)
29 d/yr
Annual snowfall
0.0 cm
Average feels-like high
21.9 °C
Average feels-like low
16.9 °C
Average peak gust
36.9 km/h
Tropical nights (≥ 20 °C)
150 d/yr
Solar radiation
19.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.68 · 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
40.7 °C
12 August 1960
Coldest day
4.7 °C
3 January 1942
Wettest day
92 mm
11 November 2017
Windiest day
71.0 km/h
12 December 1967
Strongest gust
102.6 km/h
14 December 2005
Hottest feels-like
43.5 °C
25 July 2023
Coldest feels-like
-4.3 °C
9 January 1981
Sunniest day
13.5 h
17 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 17.0 °C | +1.6 °C | 33 mm | +12 mm |
| Feb | 17.1 °C | +0.9 °C | 13 mm | -4 mm |
| Mar | 21.2 °C | +3.4 °C | 31 mm | +16 mm |
| Apr | 20.9 °C | +1.0 °C | 4 mm | -6 mm |
| May | 24.2 °C | +1.6 °C | 6 mm | +1 mm |
| Jun | 27.7 °C | +2.2 °C | 0 mm | -1 mm |
| Jul | 31.0 °C | +2.7 °C | 0 mm | -0 mm |
| Aug | 30.4 °C | +1.1 °C | 0 mm | -1 mm |
| Sep | 29.0 °C | +1.1 °C | 5 mm | -9 mm |
| Oct | 26.4 °C | +1.3 °C | 9 mm | -21 mm |
| Nov | 21.7 °C | +0.8 °C | 10 mm | -15 mm |
| Dec | 17.8 °C | +0.9 °C | 24 mm | -6 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 Zarzis?
Zarzis has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 20.0 °C and it receives 167 mm of precipitation per year.
What is the hottest day ever recorded in Zarzis?
The hottest day measured in Zarzis between 1940 and 2025 was 12 August 1960, reaching 40.7 °C.
What is the coldest day in Zarzis?
The coldest day measured in Zarzis between 1940 and 2025 was 3 January 1942, at 4.7 °C.
Does it snow in Zarzis?
Almost never: Zarzis sees virtually no snow, with about 0 frost days per year.
Has the climate of Zarzis warmed?
Yes: Zarzis warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zarzis?
The wettest day measured in Zarzis between 1940 and 2025 was 11 November 2017, with 92 mm of rain in 24 hours.
What was the windiest day in Zarzis?
The windiest day measured in Zarzis between 1940 and 2025 was 12 December 1967, with winds reaching 71.0 km/h.
What is the warmest month in Zarzis?
The warmest month in Zarzis is August (27.4 °C on average); the coldest is January (13.1 °C).
How much does it rain in Zarzis?
Zarzis receives on average 167 mm of precipitation per year, spread over about 29 rainy days.
Is it sunny in Zarzis?
Zarzis gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
Are there tropical nights in Zarzis?
Yes: Zarzis has on average 150 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zarzis?
In Zarzis, between 1940 and 2025, the highest apparent temperature reached 43.5 °C on 25 July 2023, and the lowest was -4.3 °C on 9 January 1981.
Compare Zarzis with another city
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Nearby cities
The climate around Zarzis