Acireale climate — normals and trends
Acireale (Italy) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 18.3 °C and it receives 546 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 (26.2 °C on average) and the coldest is January (12.0 °C). Rainfall peaks in October.
Acireale averages 0 frost days, 5 hot days (≥ 30 °C) and 68 rainy days per year.
Acireale has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.9 °C (on 11 August 2021) and the coldest 2.7 °C (on 1 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
AcirealeSicily
- coords
- 37.61°, 15.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.3°C
Average daily high
19.9°C
Average daily low
16.7°C
Annual rainfall
546mm
Sunshine / day
10.6h
Mean relative humidity
74%
Average peak wind
17.5km/h
Seasonal range
14.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
68 d/yr
Annual snowfall
0.0 cm
Average feels-like high
20.4 °C
Average feels-like low
16.3 °C
Average peak gust
26.8 km/h
Tropical nights (≥ 20 °C)
121 d/yr
Solar radiation
17.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
36.9 °C
11 August 2021
Coldest day
2.7 °C
1 January 1942
Wettest day
157 mm
16 October 1951
Windiest day
61.6 km/h
14 December 2005
Strongest gust
106.9 km/h
17 January 1985
Hottest feels-like
40.3 °C
23 July 2023
Coldest feels-like
-3.4 °C
1 January 1942
Snowiest day
0.7 cm
14 January 1968
Sunniest day
14.0 h
20 May 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 | 16.0 °C | +2.2 °C | 143 mm | +65 mm |
| Feb | 14.3 °C | +0.4 °C | 92 mm | +36 mm |
| Mar | 15.9 °C | +1.1 °C | 110 mm | +58 mm |
| Apr | 17.3 °C | +0.6 °C | 23 mm | -9 mm |
| May | 21.2 °C | +1.2 °C | 63 mm | +45 mm |
| Jun | 26.6 °C | +2.6 °C | 4 mm | -3 mm |
| Jul | 29.0 °C | +2.0 °C | 1 mm | -3 mm |
| Aug | 28.3 °C | +0.6 °C | 11 mm | +3 mm |
| Sep | 26.6 °C | +1.4 °C | 18 mm | -26 mm |
| Oct | 22.4 °C | +0.6 °C | 39 mm | -52 mm |
| Nov | 19.5 °C | +1.2 °C | 19 mm | -60 mm |
| Dec | 16.4 °C | +1.3 °C | 79 mm | -0 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 Acireale?
Acireale has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 18.3 °C and it receives 546 mm of precipitation per year.
What is the hottest day ever recorded in Acireale?
The hottest day measured in Acireale between 1940 and 2025 was 11 August 2021, reaching 36.9 °C.
What is the coldest day in Acireale?
The coldest day measured in Acireale between 1940 and 2025 was 1 January 1942, at 2.7 °C.
Does it snow in Acireale?
Almost never: Acireale sees virtually no snow, with about 0 frost days per year.
Has the climate of Acireale warmed?
Yes: Acireale warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Acireale?
The wettest day measured in Acireale between 1940 and 2025 was 16 October 1951, with 157 mm of rain in 24 hours.
What was the windiest day in Acireale?
The windiest day measured in Acireale between 1940 and 2025 was 14 December 2005, with winds reaching 61.6 km/h.
What is the warmest month in Acireale?
The warmest month in Acireale is August (26.2 °C on average); the coldest is January (12.0 °C).
How much does it rain in Acireale?
Acireale receives on average 546 mm of precipitation per year, spread over about 68 rainy days.
Is it sunny in Acireale?
Acireale 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 Acireale?
The heaviest 24-hour snowfall measured in Acireale between 1940 and 2025 was 14 January 1968, with 0.7 cm.
Are there tropical nights in Acireale?
Yes: Acireale has on average 121 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Acireale?
In Acireale, between 1940 and 2025, the highest apparent temperature reached 40.3 °C on 23 July 2023, and the lowest was -3.4 °C on 1 January 1942.
Compare Acireale with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Acireale