Forio climate — normals and trends
Forio (Italy) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.5 °C and it receives 897 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 (24.9 °C on average) and the coldest is February (11.5 °C). Rainfall peaks in November.
Forio averages 0 frost days, 0 hot days (≥ 30 °C) and 101 rainy days per year.
Forio has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 30.8 °C (on 25 July 2023) and the coldest 0.9 °C (on 29 December 1941).
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
ForioCampania
- coords
- 40.74°, 13.86°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.5°C
Average daily high
18.4°C
Average daily low
16.6°C
Annual rainfall
897mm
Sunshine / day
10.4h
Mean relative humidity
75%
Average peak wind
24.2km/h
Seasonal range
13.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
101 d/yr
Annual snowfall
0.2 cm
Average feels-like high
18.3 °C
Average feels-like low
15.0 °C
Average peak gust
33.6 km/h
Tropical nights (≥ 20 °C)
116 d/yr
Solar radiation
16.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.47 · 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
30.8 °C
25 July 2023
Coldest day
0.9 °C
29 December 1941
Wettest day
86 mm
5 October 2013
Windiest day
78.6 km/h
28 December 1999
Strongest gust
118.4 km/h
28 December 1999
Hottest feels-like
36.8 °C
22 July 2023
Coldest feels-like
-7.9 °C
23 January 1963
Snowiest day
2.5 cm
18 February 1956
Sunniest day
14.1 h
3 July 2025
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 | 14.4 °C | +1.8 °C | 99 mm | -13 mm |
| Feb | 14.1 °C | +1.5 °C | 101 mm | +9 mm |
| Mar | 14.9 °C | +1.5 °C | 59 mm | -11 mm |
| Apr | 16.5 °C | +1.2 °C | 29 mm | -25 mm |
| May | 19.7 °C | +1.1 °C | 16 mm | -16 mm |
| Jun | 25.3 °C | +3.0 °C | 1 mm | -16 mm |
| Jul | 26.9 °C | +1.9 °C | 11 mm | +3 mm |
| Aug | 26.6 °C | +1.0 °C | 19 mm | -5 mm |
| Sep | 24.9 °C | +1.5 °C | 133 mm | +57 mm |
| Oct | 20.6 °C | +0.2 °C | 56 mm | -62 mm |
| Nov | 17.4 °C | +0.4 °C | 175 mm | +17 mm |
| Dec | 15.4 °C | +1.4 °C | 155 mm | +19 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 Forio?
Forio has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.5 °C and it receives 897 mm of precipitation per year.
What is the hottest day ever recorded in Forio?
The hottest day measured in Forio between 1940 and 2025 was 25 July 2023, reaching 30.8 °C.
What is the coldest day in Forio?
The coldest day measured in Forio between 1940 and 2025 was 29 December 1941, at 0.9 °C.
Does it snow in Forio?
Almost never: Forio sees virtually no snow, with about 0 frost days per year.
Has the climate of Forio warmed?
Yes: Forio warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Forio?
The wettest day measured in Forio between 1940 and 2025 was 5 October 2013, with 86 mm of rain in 24 hours.
What was the windiest day in Forio?
The windiest day measured in Forio between 1940 and 2025 was 28 December 1999, with winds reaching 78.6 km/h.
What is the warmest month in Forio?
The warmest month in Forio is August (24.9 °C on average); the coldest is February (11.5 °C).
How much does it rain in Forio?
Forio receives on average 897 mm of precipitation per year, spread over about 101 rainy days.
Is it sunny in Forio?
Forio gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.
What is the biggest single-day snowfall in Forio?
The heaviest 24-hour snowfall measured in Forio between 1940 and 2025 was 18 February 1956, with 2.5 cm.
Are there tropical nights in Forio?
Yes: Forio has on average 116 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Forio?
In Forio, between 1940 and 2025, the highest apparent temperature reached 36.8 °C on 22 July 2023, and the lowest was -7.9 °C on 23 January 1963.
Compare Forio with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Forio