Sezze climate — normals and trends
Sezze (Italy) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 15.1 °C and it receives 989 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 (24.0 °C on average) and the coldest is January (7.0 °C). Rainfall peaks in November.
Sezze averages 8 frost days, 25 hot days (≥ 30 °C) and 114 rainy days per year.
Sezze has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 14 to 2 per year over the period.
The hottest day of the period reached 38.6 °C (on 25 August 2007) and the coldest -13.4 °C (on 11 January 1985).
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
SezzeLazio
- coords
- 41.50°, 13.06°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.1°C
Average daily high
19.4°C
Average daily low
11.0°C
Annual rainfall
989mm
Sunshine / day
10.2h
Mean relative humidity
78%
Average peak wind
11.9km/h
Seasonal range
17.0°C
Frost days (< 0 °C)
8 d/yr
Hot days (≥ 30 °C)
25 d/yr
Rainy days (≥ 1 mm)
114 d/yr
Annual snowfall
2.7 cm
Average feels-like high
19.4 °C
Average feels-like low
10.3 °C
Average peak gust
30.9 km/h
Tropical nights (≥ 20 °C)
24 d/yr
Solar radiation
15.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.54 · 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
38.6 °C
25 August 2007
Coldest day
-13.4 °C
11 January 1985
Wettest day
130 mm
14 October 2015
Windiest day
47.5 km/h
4 November 1966
Strongest gust
133.6 km/h
4 November 1966
Hottest feels-like
42.3 °C
4 August 1981
Coldest feels-like
-17.6 °C
11 January 1985
Snowiest day
8.5 cm
11 January 1940
Sunniest day
14.3 h
30 June 1942
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 | 13.5 °C | +2.5 °C | 74 mm | -19 mm |
| Feb | 14.5 °C | +2.4 °C | 96 mm | -1 mm |
| Mar | 16.6 °C | +2.2 °C | 126 mm | +39 mm |
| Apr | 19.8 °C | +2.6 °C | 87 mm | +5 mm |
| May | 22.9 °C | +1.4 °C | 55 mm | -6 mm |
| Jun | 31.3 °C | +5.7 °C | 7 mm | -28 mm |
| Jul | 31.3 °C | +2.5 °C | 15 mm | -6 mm |
| Aug | 31.1 °C | +2.1 °C | 48 mm | +14 mm |
| Sep | 27.1 °C | +2.0 °C | 166 mm | +82 mm |
| Oct | 21.5 °C | +0.8 °C | 81 mm | -44 mm |
| Nov | 17.0 °C | +1.3 °C | 115 mm | -37 mm |
| Dec | 14.4 °C | +2.3 °C | 65 mm | -54 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 Sezze?
Sezze has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 15.1 °C and it receives 989 mm of precipitation per year.
What is the hottest day ever recorded in Sezze?
The hottest day measured in Sezze between 1940 and 2025 was 25 August 2007, reaching 38.6 °C.
What is the coldest day in Sezze?
The coldest day measured in Sezze between 1940 and 2025 was 11 January 1985, at -13.4 °C.
Does it snow in Sezze?
Yes. Sezze gets on average 2.7 cm of snow per year and has around 8 frost days.
Has the climate of Sezze warmed?
Yes: Sezze warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sezze?
The wettest day measured in Sezze between 1940 and 2025 was 14 October 2015, with 130 mm of rain in 24 hours.
What was the windiest day in Sezze?
The windiest day measured in Sezze between 1940 and 2025 was 4 November 1966, with winds reaching 47.5 km/h.
What is the warmest month in Sezze?
The warmest month in Sezze is August (24.0 °C on average); the coldest is January (7.0 °C).
How much does it rain in Sezze?
Sezze receives on average 989 mm of precipitation per year, spread over about 114 rainy days.
Is it sunny in Sezze?
Sezze gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sezze?
The heaviest 24-hour snowfall measured in Sezze between 1940 and 2025 was 11 January 1940, with 8.5 cm.
Are there tropical nights in Sezze?
Yes: Sezze has on average 24 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sezze?
In Sezze, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 4 August 1981, and the lowest was -17.6 °C on 11 January 1985.
Compare Sezze with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sezze