Porto Santo Stefano climate — normals and trends
Porto Santo Stefano (Italy) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.7 °C and it receives 766 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 (24.2 °C on average) and the coldest is January (10.6 °C). Rainfall peaks in November.
Porto Santo Stefano averages 0 frost days, 0 hot days (≥ 30 °C) and 94 rainy days per year.
Porto Santo Stefano has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 31.1 °C (on 30 July 1983) and the coldest -2.9 °C (on 15 February 1940).
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
Porto Santo StefanoTuscany
- coords
- 42.44°, 11.12°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.7°C
Average daily high
17.9°C
Average daily low
15.5°C
Annual rainfall
766mm
Sunshine / day
10.4h
Mean relative humidity
76%
Average peak wind
25.0km/h
Seasonal range
13.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
94 d/yr
Annual snowfall
0.9 cm
Average feels-like high
17.4 °C
Average feels-like low
13.7 °C
Average peak gust
34.8 km/h
Tropical nights (≥ 20 °C)
96 d/yr
Solar radiation
15.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °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
31.1 °C
30 July 1983
Coldest day
-2.9 °C
15 February 1940
Wettest day
120 mm
4 November 1966
Windiest day
74.1 km/h
29 October 2018
Strongest gust
117.4 km/h
31 December 1943
Hottest feels-like
36.7 °C
30 July 1983
Coldest feels-like
-11.0 °C
23 January 1963
Snowiest day
9.5 cm
29 December 1996
Sunniest day
14.9 h
1 July 2019
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 | 13.8 °C | +1.9 °C | 61 mm | -22 mm |
| Feb | 13.7 °C | +1.6 °C | 137 mm | +64 mm |
| Mar | 14.6 °C | +1.4 °C | 92 mm | +30 mm |
| Apr | 16.4 °C | +1.3 °C | 54 mm | +4 mm |
| May | 19.4 °C | +1.0 °C | 18 mm | -15 mm |
| Jun | 25.1 °C | +3.1 °C | 0 mm | -20 mm |
| Jul | 26.4 °C | +1.8 °C | 16 mm | +7 mm |
| Aug | 26.1 °C | +0.9 °C | 44 mm | +18 mm |
| Sep | 23.8 °C | +0.9 °C | 97 mm | +25 mm |
| Oct | 20.0 °C | +0.2 °C | 76 mm | -38 mm |
| Nov | 16.6 °C | +0.5 °C | 74 mm | -54 mm |
| Dec | 14.6 °C | +1.4 °C | 128 mm | +30 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 Porto Santo Stefano?
Porto Santo Stefano has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.7 °C and it receives 766 mm of precipitation per year.
What is the hottest day ever recorded in Porto Santo Stefano?
The hottest day measured in Porto Santo Stefano between 1940 and 2025 was 30 July 1983, reaching 31.1 °C.
What is the coldest day in Porto Santo Stefano?
The coldest day measured in Porto Santo Stefano between 1940 and 2025 was 15 February 1940, at -2.9 °C.
Does it snow in Porto Santo Stefano?
Almost never: Porto Santo Stefano sees virtually no snow, with about 0 frost days per year.
Has the climate of Porto Santo Stefano warmed?
Yes: Porto Santo Stefano warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Porto Santo Stefano?
The wettest day measured in Porto Santo Stefano between 1940 and 2025 was 4 November 1966, with 120 mm of rain in 24 hours.
What was the windiest day in Porto Santo Stefano?
The windiest day measured in Porto Santo Stefano between 1940 and 2025 was 29 October 2018, with winds reaching 74.1 km/h.
What is the warmest month in Porto Santo Stefano?
The warmest month in Porto Santo Stefano is August (24.2 °C on average); the coldest is January (10.6 °C).
How much does it rain in Porto Santo Stefano?
Porto Santo Stefano receives on average 766 mm of precipitation per year, spread over about 94 rainy days.
Is it sunny in Porto Santo Stefano?
Porto Santo Stefano 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 Porto Santo Stefano?
The heaviest 24-hour snowfall measured in Porto Santo Stefano between 1940 and 2025 was 29 December 1996, with 9.5 cm.
Are there tropical nights in Porto Santo Stefano?
Yes: Porto Santo Stefano has on average 96 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Porto Santo Stefano?
In Porto Santo Stefano, between 1940 and 2025, the highest apparent temperature reached 36.7 °C on 30 July 1983, and the lowest was -11.0 °C on 23 January 1963.
Compare Porto Santo Stefano with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Porto Santo Stefano