Salemi climate — normals and trends
Salemi (Italy) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.7 °C and it receives 531 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 (25.9 °C on average) and the coldest is January (11.0 °C). Rainfall peaks in November.
Salemi averages 0 frost days, 38 hot days (≥ 30 °C) and 85 rainy days per year.
Salemi has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.6 °C (on 11 August 2021) and the coldest -1.4 °C (on 9 January 1966).
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
SalemiSicily
- coords
- 37.82°, 12.81°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.7°C
Average daily high
21.2°C
Average daily low
14.4°C
Annual rainfall
531mm
Sunshine / day
10.8h
Mean relative humidity
72%
Average peak wind
19.2km/h
Seasonal range
14.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
38 d/yr
Rainy days (≥ 1 mm)
85 d/yr
Annual snowfall
0.0 cm
Average feels-like high
20.7 °C
Average feels-like low
13.5 °C
Average peak gust
39.9 km/h
Tropical nights (≥ 20 °C)
74 d/yr
Solar radiation
17.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.63 · 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
39.6 °C
11 August 2021
Coldest day
-1.4 °C
9 January 1966
Wettest day
83 mm
5 September 1948
Windiest day
60.7 km/h
1 March 1986
Strongest gust
116.3 km/h
1 March 1986
Hottest feels-like
41.9 °C
11 August 2021
Coldest feels-like
-4.8 °C
9 January 1966
Snowiest day
0.9 cm
3 January 1993
Sunniest day
14.0 h
29 June 1944
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 | 15.5 °C | +1.7 °C | 78 mm | +10 mm |
| Feb | 15.0 °C | +0.9 °C | 80 mm | +20 mm |
| Mar | 17.3 °C | +1.5 °C | 45 mm | -8 mm |
| Apr | 19.5 °C | +1.2 °C | 19 mm | -25 mm |
| May | 23.6 °C | +1.1 °C | 52 mm | +27 mm |
| Jun | 30.1 °C | +3.3 °C | 6 mm | -3 mm |
| Jul | 30.9 °C | +1.1 °C | 5 mm | +1 mm |
| Aug | 30.2 °C | +0.1 °C | 8 mm | -1 mm |
| Sep | 28.3 °C | +1.4 °C | 55 mm | +14 mm |
| Oct | 22.5 °C | -0.4 °C | 86 mm | +13 mm |
| Nov | 18.3 °C | -0.2 °C | 80 mm | +4 mm |
| Dec | 16.3 °C | +1.2 °C | 69 mm | -3 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 Salemi?
Salemi has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.7 °C and it receives 531 mm of precipitation per year.
What is the hottest day ever recorded in Salemi?
The hottest day measured in Salemi between 1940 and 2025 was 11 August 2021, reaching 39.6 °C.
What is the coldest day in Salemi?
The coldest day measured in Salemi between 1940 and 2025 was 9 January 1966, at -1.4 °C.
Does it snow in Salemi?
Almost never: Salemi sees virtually no snow, with about 0 frost days per year.
Has the climate of Salemi warmed?
Yes: Salemi warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Salemi?
The wettest day measured in Salemi between 1940 and 2025 was 5 September 1948, with 83 mm of rain in 24 hours.
What was the windiest day in Salemi?
The windiest day measured in Salemi between 1940 and 2025 was 1 March 1986, with winds reaching 60.7 km/h.
What is the warmest month in Salemi?
The warmest month in Salemi is August (25.9 °C on average); the coldest is January (11.0 °C).
How much does it rain in Salemi?
Salemi receives on average 531 mm of precipitation per year, spread over about 85 rainy days.
Is it sunny in Salemi?
Salemi gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in Salemi?
The heaviest 24-hour snowfall measured in Salemi between 1940 and 2025 was 3 January 1993, with 0.9 cm.
Are there tropical nights in Salemi?
Yes: Salemi has on average 74 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Salemi?
In Salemi, between 1940 and 2025, the highest apparent temperature reached 41.9 °C on 11 August 2021, and the lowest was -4.8 °C on 9 January 1966.
Compare Salemi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Salemi