Comacchio climate — normals and trends
Comacchio (Italy) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.1 °C and it receives 772 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 (24.6 °C on average) and the coldest is January (6.0 °C). Rainfall peaks in November.
Comacchio averages 3 frost days, 5 hot days (≥ 30 °C) and 104 rainy days per year.
Comacchio has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 7 to 0 per year over the period.
The hottest day of the period reached 35.2 °C (on 11 July 1968) and the coldest -10.6 °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
ComacchioEmilia-Romagna
- coords
- 44.69°, 12.18°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.1°C
Average daily high
17.0°C
Average daily low
13.1°C
Annual rainfall
772mm
Sunshine / day
9.6h
Mean relative humidity
75%
Average peak wind
19.8km/h
Seasonal range
18.6°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
104 d/yr
Annual snowfall
6.8 cm
Average feels-like high
16.4 °C
Average feels-like low
11.4 °C
Average peak gust
30.6 km/h
Tropical nights (≥ 20 °C)
80 d/yr
Solar radiation
14.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.57 · 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
35.2 °C
11 July 1968
Coldest day
-10.6 °C
15 February 1940
Wettest day
95 mm
22 July 1977
Windiest day
68.0 km/h
13 November 2017
Strongest gust
119.2 km/h
13 November 2017
Hottest feels-like
38.8 °C
23 July 2015
Coldest feels-like
-16.9 °C
15 February 1940
Snowiest day
16.2 cm
24 January 1940
Sunniest day
14.9 h
23 June 2020
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 | 9.0 °C | +1.2 °C | 63 mm | +6 mm |
| Feb | 8.7 °C | +0.1 °C | 73 mm | +17 mm |
| Mar | 13.1 °C | +1.8 °C | 93 mm | +36 mm |
| Apr | 16.8 °C | +1.8 °C | 58 mm | -3 mm |
| May | 20.4 °C | +0.6 °C | 68 mm | +9 mm |
| Jun | 27.1 °C | +3.0 °C | 66 mm | +11 mm |
| Jul | 27.5 °C | +0.8 °C | 115 mm | +64 mm |
| Aug | 27.0 °C | +0.4 °C | 80 mm | +14 mm |
| Sep | 24.0 °C | +0.9 °C | 105 mm | +31 mm |
| Oct | 18.3 °C | 0.0 °C | 84 mm | +2 mm |
| Nov | 13.1 °C | -0.1 °C | 84 mm | -2 mm |
| Dec | 10.0 °C | +0.8 °C | 43 mm | -25 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 Comacchio?
Comacchio has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.1 °C and it receives 772 mm of precipitation per year.
What is the hottest day ever recorded in Comacchio?
The hottest day measured in Comacchio between 1940 and 2025 was 11 July 1968, reaching 35.2 °C.
What is the coldest day in Comacchio?
The coldest day measured in Comacchio between 1940 and 2025 was 15 February 1940, at -10.6 °C.
Does it snow in Comacchio?
Yes. Comacchio gets on average 6.8 cm of snow per year and has around 3 frost days.
Has the climate of Comacchio warmed?
Yes: Comacchio warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Comacchio?
The wettest day measured in Comacchio between 1940 and 2025 was 22 July 1977, with 95 mm of rain in 24 hours.
What was the windiest day in Comacchio?
The windiest day measured in Comacchio between 1940 and 2025 was 13 November 2017, with winds reaching 68.0 km/h.
What is the warmest month in Comacchio?
The warmest month in Comacchio is July (24.6 °C on average); the coldest is January (6.0 °C).
How much does it rain in Comacchio?
Comacchio receives on average 772 mm of precipitation per year, spread over about 104 rainy days.
Is it sunny in Comacchio?
Comacchio gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Comacchio?
The heaviest 24-hour snowfall measured in Comacchio between 1940 and 2025 was 24 January 1940, with 16.2 cm.
Are there tropical nights in Comacchio?
Yes: Comacchio has on average 80 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Comacchio?
In Comacchio, between 1940 and 2025, the highest apparent temperature reached 38.8 °C on 23 July 2015, and the lowest was -16.9 °C on 15 February 1940.
Compare Comacchio with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Comacchio