San Giovanni in Marignano climate — normals and trends
San Giovanni in Marignano (Italy) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.3 °C and it receives 817 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 (24.0 °C on average) and the coldest is January (7.5 °C). Rainfall peaks in November.
San Giovanni in Marignano averages 1 frost days, 1 hot days (≥ 30 °C) and 107 rainy days per year.
San Giovanni in Marignano has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 2 to 0 per year over the period.
The hottest day of the period reached 33.8 °C (on 29 July 1983) and the coldest -7.5 °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
San Giovanni in MarignanoEmilia-Romagna
- coords
- 43.94°, 12.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.3°C
Average daily high
16.7°C
Average daily low
13.9°C
Annual rainfall
817mm
Sunshine / day
9.7h
Mean relative humidity
76%
Average peak wind
21.1km/h
Seasonal range
16.5°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
107 d/yr
Annual snowfall
12.6 cm
Average feels-like high
16.2 °C
Average feels-like low
12.0 °C
Average peak gust
30.1 km/h
Tropical nights (≥ 20 °C)
82 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.51 · 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
33.8 °C
29 July 1983
Coldest day
-7.5 °C
15 February 1940
Wettest day
103 mm
20 August 1957
Windiest day
68.6 km/h
28 March 1995
Strongest gust
109.4 km/h
28 March 1995
Hottest feels-like
38.3 °C
22 July 2015
Coldest feels-like
-14.5 °C
15 February 1940
Snowiest day
25.8 cm
24 January 1940
Sunniest day
14.7 h
29 June 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 | 10.4 °C | +1.5 °C | 42 mm | -34 mm |
| Feb | 9.2 °C | 0.0 °C | 76 mm | +7 mm |
| Mar | 12.2 °C | +1.1 °C | 98 mm | +31 mm |
| Apr | 15.5 °C | +1.4 °C | 72 mm | +12 mm |
| May | 19.5 °C | +0.9 °C | 48 mm | -6 mm |
| Jun | 25.6 °C | +2.8 °C | 37 mm | -9 mm |
| Jul | 26.9 °C | +1.5 °C | 118 mm | +81 mm |
| Aug | 26.2 °C | +0.8 °C | 35 mm | -23 mm |
| Sep | 23.8 °C | +1.5 °C | 51 mm | -22 mm |
| Oct | 18.7 °C | +0.6 °C | 52 mm | -36 mm |
| Nov | 14.3 °C | +0.5 °C | 109 mm | +10 mm |
| Dec | 10.9 °C | +0.5 °C | 45 mm | -46 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 San Giovanni in Marignano?
San Giovanni in Marignano has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.3 °C and it receives 817 mm of precipitation per year.
What is the hottest day ever recorded in San Giovanni in Marignano?
The hottest day measured in San Giovanni in Marignano between 1940 and 2025 was 29 July 1983, reaching 33.8 °C.
What is the coldest day in San Giovanni in Marignano?
The coldest day measured in San Giovanni in Marignano between 1940 and 2025 was 15 February 1940, at -7.5 °C.
Does it snow in San Giovanni in Marignano?
Yes. San Giovanni in Marignano gets on average 12.6 cm of snow per year and has around 1 frost days.
Has the climate of San Giovanni in Marignano warmed?
Yes: San Giovanni in Marignano warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Giovanni in Marignano?
The wettest day measured in San Giovanni in Marignano between 1940 and 2025 was 20 August 1957, with 103 mm of rain in 24 hours.
What was the windiest day in San Giovanni in Marignano?
The windiest day measured in San Giovanni in Marignano between 1940 and 2025 was 28 March 1995, with winds reaching 68.6 km/h.
What is the warmest month in San Giovanni in Marignano?
The warmest month in San Giovanni in Marignano is July (24.0 °C on average); the coldest is January (7.5 °C).
How much does it rain in San Giovanni in Marignano?
San Giovanni in Marignano receives on average 817 mm of precipitation per year, spread over about 107 rainy days.
Is it sunny in San Giovanni in Marignano?
San Giovanni in Marignano gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
What is the biggest single-day snowfall in San Giovanni in Marignano?
The heaviest 24-hour snowfall measured in San Giovanni in Marignano between 1940 and 2025 was 24 January 1940, with 25.8 cm.
Are there tropical nights in San Giovanni in Marignano?
Yes: San Giovanni in Marignano has on average 82 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San Giovanni in Marignano?
In San Giovanni in Marignano, between 1940 and 2025, the highest apparent temperature reached 38.3 °C on 22 July 2015, and the lowest was -14.5 °C on 15 February 1940.
Compare San Giovanni in Marignano with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Giovanni in Marignano