Grotte climate — normals and trends
Grotte (Italy) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 15.4 °C and it receives 456 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 (24.4 °C on average) and the coldest is January (7.5 °C). Rainfall peaks in October.
Grotte averages 14 frost days, 51 hot days (≥ 30 °C) and 76 rainy days per year.
Grotte has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 23 to 5 per year over the period.
The hottest day of the period reached 41.5 °C (on 30 July 1945) and the coldest -8.3 °C (on 1 February 1962).
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
GrotteSicily
- coords
- 37.40°, 13.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.4°C
Average daily high
20.9°C
Average daily low
10.3°C
Annual rainfall
456mm
Sunshine / day
10.5h
Mean relative humidity
72%
Average peak wind
14.6km/h
Seasonal range
16.9°C
Frost days (< 0 °C)
14 d/yr
Hot days (≥ 30 °C)
51 d/yr
Rainy days (≥ 1 mm)
76 d/yr
Annual snowfall
0.7 cm
Average feels-like high
20.1 °C
Average feels-like low
9.0 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
15 d/yr
Solar radiation
17.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.50 · 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
41.5 °C
30 July 1945
Coldest day
-8.3 °C
1 February 1962
Wettest day
105 mm
9 December 1996
Windiest day
44.3 km/h
21 January 1981
Strongest gust
108.4 km/h
21 January 1981
Hottest feels-like
43.6 °C
9 August 1999
Coldest feels-like
-12.3 °C
1 February 1962
Snowiest day
3.4 cm
10 February 2023
Sunniest day
14.0 h
13 May 1940
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 | 14.3 °C | +2.1 °C | 74 mm | +20 mm |
| Feb | 13.7 °C | +0.9 °C | 85 mm | +33 mm |
| Mar | 16.4 °C | +1.5 °C | 85 mm | +34 mm |
| Apr | 18.9 °C | +1.0 °C | 43 mm | -1 mm |
| May | 24.4 °C | +1.4 °C | 66 mm | +40 mm |
| Jun | 32.1 °C | +4.2 °C | 3 mm | -8 mm |
| Jul | 33.6 °C | +2.8 °C | 2 mm | -2 mm |
| Aug | 32.3 °C | +1.6 °C | 8 mm | -3 mm |
| Sep | 29.3 °C | +2.3 °C | 22 mm | -9 mm |
| Oct | 22.1 °C | -0.3 °C | 43 mm | -15 mm |
| Nov | 17.3 °C | 0.0 °C | 38 mm | -18 mm |
| Dec | 14.8 °C | +1.3 °C | 73 mm | +16 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 Grotte?
Grotte has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 15.4 °C and it receives 456 mm of precipitation per year.
What is the hottest day ever recorded in Grotte?
The hottest day measured in Grotte between 1940 and 2025 was 30 July 1945, reaching 41.5 °C.
What is the coldest day in Grotte?
The coldest day measured in Grotte between 1940 and 2025 was 1 February 1962, at -8.3 °C.
Does it snow in Grotte?
Almost never: Grotte sees virtually no snow, with about 14 frost days per year.
Has the climate of Grotte warmed?
Yes: Grotte warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Grotte?
The wettest day measured in Grotte between 1940 and 2025 was 9 December 1996, with 105 mm of rain in 24 hours.
What was the windiest day in Grotte?
The windiest day measured in Grotte between 1940 and 2025 was 21 January 1981, with winds reaching 44.3 km/h.
What is the warmest month in Grotte?
The warmest month in Grotte is July (24.4 °C on average); the coldest is January (7.5 °C).
How much does it rain in Grotte?
Grotte receives on average 456 mm of precipitation per year, spread over about 76 rainy days.
Is it sunny in Grotte?
Grotte gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Grotte?
The heaviest 24-hour snowfall measured in Grotte between 1940 and 2025 was 10 February 2023, with 3.4 cm.
Are there tropical nights in Grotte?
Yes: Grotte has on average 15 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Grotte?
In Grotte, between 1940 and 2025, the highest apparent temperature reached 43.6 °C on 9 August 1999, and the lowest was -12.3 °C on 1 February 1962.
Compare Grotte with another city
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Nearby cities
The climate around Grotte