Alessandria climate — normals and trends
Alessandria (Italy) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.9 °C and it receives 885 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 (23.9 °C on average) and the coldest is January (1.4 °C). Rainfall peaks in November.
Alessandria averages 58 frost days, 31 hot days (≥ 30 °C) and 108 rainy days per year.
Alessandria has warmed by +3.3 °C between 1940 and 2025, or +0.38 °C per decade. This trend is statistically significant.
The number of frost days there went from about 83 to 33 per year over the period.
The hottest day of the period reached 39.9 °C (on 27 June 2019) and the coldest -20.0 °C (on 10 January 1945).
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
AlessandriaPiedmont
- coords
- 44.91°, 8.61°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.9°C
Average daily high
17.6°C
Average daily low
8.8°C
Annual rainfall
885mm
Sunshine / day
9.1h
Mean relative humidity
75%
Average peak wind
10.2km/h
Seasonal range
22.5°C
Frost days (< 0 °C)
58 d/yr
Hot days (≥ 30 °C)
31 d/yr
Rainy days (≥ 1 mm)
108 d/yr
Annual snowfall
48.2 cm
Average feels-like high
16.9 °C
Average feels-like low
7.6 °C
Average peak gust
22.0 km/h
Tropical nights (≥ 20 °C)
24 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.3 °C
since 1940
+0.4 °C per decade · r² = 0.73 · 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
39.9 °C
27 June 2019
Coldest day
-20.0 °C
10 January 1945
Wettest day
110 mm
2 November 1968
Windiest day
42.4 km/h
30 October 2018
Strongest gust
77.0 km/h
29 October 2018
Hottest feels-like
43.0 °C
27 June 2019
Coldest feels-like
-24.6 °C
10 January 1945
Snowiest day
34.0 cm
28 November 2008
Sunniest day
15.0 h
1 June 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 | 7.0 °C | +1.6 °C | 69 mm | +11 mm |
| Feb | 8.8 °C | +0.3 °C | 58 mm | -3 mm |
| Mar | 14.5 °C | +1.0 °C | 97 mm | +24 mm |
| Apr | 19.2 °C | +1.7 °C | 114 mm | +30 mm |
| May | 22.9 °C | +1.1 °C | 87 mm | +2 mm |
| Jun | 30.8 °C | +4.6 °C | 23 mm | -43 mm |
| Jul | 29.6 °C | +0.3 °C | 106 mm | +56 mm |
| Aug | 29.6 °C | +1.0 °C | 131 mm | +61 mm |
| Sep | 24.2 °C | -0.2 °C | 66 mm | -8 mm |
| Oct | 18.6 °C | +0.7 °C | 31 mm | -68 mm |
| Nov | 11.6 °C | +0.5 °C | 46 mm | -54 mm |
| Dec | 8.9 °C | +2.4 °C | 117 mm | +51 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 Alessandria?
Alessandria has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 885 mm of precipitation per year.
What is the hottest day ever recorded in Alessandria?
The hottest day measured in Alessandria between 1940 and 2025 was 27 June 2019, reaching 39.9 °C.
What is the coldest day in Alessandria?
The coldest day measured in Alessandria between 1940 and 2025 was 10 January 1945, at -20.0 °C.
Does it snow in Alessandria?
Yes. Alessandria gets on average 48.2 cm of snow per year and has around 58 frost days.
Has the climate of Alessandria warmed?
Yes: Alessandria warmed by +3.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alessandria?
The wettest day measured in Alessandria between 1940 and 2025 was 2 November 1968, with 110 mm of rain in 24 hours.
What was the windiest day in Alessandria?
The windiest day measured in Alessandria between 1940 and 2025 was 30 October 2018, with winds reaching 42.4 km/h.
What is the warmest month in Alessandria?
The warmest month in Alessandria is July (23.9 °C on average); the coldest is January (1.4 °C).
How much does it rain in Alessandria?
Alessandria receives on average 885 mm of precipitation per year, spread over about 108 rainy days.
Is it sunny in Alessandria?
Alessandria gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Alessandria?
The heaviest 24-hour snowfall measured in Alessandria between 1940 and 2025 was 28 November 2008, with 34.0 cm.
Are there tropical nights in Alessandria?
Yes: Alessandria has on average 24 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alessandria?
In Alessandria, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 27 June 2019, and the lowest was -24.6 °C on 10 January 1945.
Compare Alessandria with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alessandria