Grottammare climate — normals and trends
Grottammare (Italy) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.4 °C and it receives 836 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 (23.3 °C on average) and the coldest is January (6.4 °C). Rainfall peaks in November.
Grottammare averages 6 frost days, 2 hot days (≥ 30 °C) and 126 rainy days per year.
Grottammare has warmed by +1.8 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 11 to 1 per year over the period.
The hottest day of the period reached 33.3 °C (on 4 August 2017) and the coldest -9.1 °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
GrottammareThe Marches
- coords
- 42.98°, 13.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.4°C
Average daily high
16.8°C
Average daily low
12.2°C
Annual rainfall
836mm
Sunshine / day
9.8h
Mean relative humidity
76%
Average peak wind
14.4km/h
Seasonal range
16.9°C
Frost days (< 0 °C)
6 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
33.2 cm
Average feels-like high
16.5 °C
Average feels-like low
11.0 °C
Average peak gust
26.7 km/h
Tropical nights (≥ 20 °C)
52 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.56 · 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
33.3 °C
4 August 2017
Coldest day
-9.1 °C
15 February 1940
Wettest day
86 mm
2 September 1958
Windiest day
56.6 km/h
31 December 1979
Strongest gust
110.2 km/h
31 December 1979
Hottest feels-like
38.3 °C
4 August 2017
Coldest feels-like
-15.5 °C
15 February 1940
Snowiest day
33.5 cm
12 March 1956
Sunniest day
14.4 h
25 June 2015
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 | 10.5 °C | +1.9 °C | 34 mm | -33 mm |
| Feb | 10.3 °C | +1.0 °C | 59 mm | -4 mm |
| Mar | 13.0 °C | +1.6 °C | 133 mm | +61 mm |
| Apr | 16.2 °C | +1.6 °C | 51 mm | -21 mm |
| May | 19.8 °C | +0.9 °C | 92 mm | +18 mm |
| Jun | 26.5 °C | +3.5 °C | 32 mm | -33 mm |
| Jul | 27.3 °C | +1.6 °C | 75 mm | +27 mm |
| Aug | 26.4 °C | +0.6 °C | 48 mm | -9 mm |
| Sep | 24.0 °C | +1.6 °C | 47 mm | -28 mm |
| Oct | 18.2 °C | +0.2 °C | 56 mm | -21 mm |
| Nov | 14.2 °C | +0.7 °C | 131 mm | +46 mm |
| Dec | 11.4 °C | +1.4 °C | 41 mm | -41 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 Grottammare?
Grottammare has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.4 °C and it receives 836 mm of precipitation per year.
What is the hottest day ever recorded in Grottammare?
The hottest day measured in Grottammare between 1940 and 2025 was 4 August 2017, reaching 33.3 °C.
What is the coldest day in Grottammare?
The coldest day measured in Grottammare between 1940 and 2025 was 15 February 1940, at -9.1 °C.
Does it snow in Grottammare?
Yes. Grottammare gets on average 33.2 cm of snow per year and has around 6 frost days.
Has the climate of Grottammare warmed?
Yes: Grottammare warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Grottammare?
The wettest day measured in Grottammare between 1940 and 2025 was 2 September 1958, with 86 mm of rain in 24 hours.
What was the windiest day in Grottammare?
The windiest day measured in Grottammare between 1940 and 2025 was 31 December 1979, with winds reaching 56.6 km/h.
What is the warmest month in Grottammare?
The warmest month in Grottammare is July (23.3 °C on average); the coldest is January (6.4 °C).
How much does it rain in Grottammare?
Grottammare receives on average 836 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Grottammare?
Grottammare gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Grottammare?
The heaviest 24-hour snowfall measured in Grottammare between 1940 and 2025 was 12 March 1956, with 33.5 cm.
Are there tropical nights in Grottammare?
Yes: Grottammare has on average 52 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Grottammare?
In Grottammare, between 1940 and 2025, the highest apparent temperature reached 38.3 °C on 4 August 2017, and the lowest was -15.5 °C on 15 February 1940.
Compare Grottammare with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Grottammare