Certaldo climate — normals and trends
Certaldo (Italy) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 13.6 °C and it receives 927 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 (23.2 °C on average) and the coldest is January (4.6 °C). Rainfall peaks in November.
Certaldo averages 40 frost days, 28 hot days (≥ 30 °C) and 115 rainy days per year.
Certaldo 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 55 to 25 per year over the period.
The hottest day of the period reached 37.6 °C (on 24 August 2023) and the coldest -23.2 °C (on 15 February 1956).
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
CertaldoTuscany
- coords
- 43.55°, 11.04°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.6°C
Average daily high
18.4°C
Average daily low
9.0°C
Annual rainfall
927mm
Sunshine / day
9.6h
Mean relative humidity
75%
Average peak wind
12.7km/h
Seasonal range
18.6°C
Frost days (< 0 °C)
40 d/yr
Hot days (≥ 30 °C)
28 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
10.0 cm
Average feels-like high
17.7 °C
Average feels-like low
7.7 °C
Average peak gust
30.7 km/h
Tropical nights (≥ 20 °C)
9 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.48 · 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
37.6 °C
24 August 2023
Coldest day
-23.2 °C
15 February 1956
Wettest day
126 mm
4 November 1966
Windiest day
40.0 km/h
31 December 1943
Strongest gust
97.6 km/h
5 March 2015
Hottest feels-like
41.4 °C
11 August 2024
Coldest feels-like
-27.9 °C
15 February 1956
Snowiest day
17.0 cm
1 February 1942
Sunniest day
14.9 h
1 July 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 | 10.9 °C | +2.3 °C | 75 mm | +8 mm |
| Feb | 11.7 °C | +1.4 °C | 132 mm | +56 mm |
| Mar | 14.8 °C | +1.2 °C | 148 mm | +70 mm |
| Apr | 18.5 °C | +1.5 °C | 105 mm | +19 mm |
| May | 21.7 °C | +0.4 °C | 95 mm | +19 mm |
| Jun | 30.9 °C | +5.4 °C | 7 mm | -46 mm |
| Jul | 29.8 °C | +0.9 °C | 67 mm | +35 mm |
| Aug | 30.6 °C | +1.7 °C | 96 mm | +45 mm |
| Sep | 24.8 °C | +0.1 °C | 119 mm | +27 mm |
| Oct | 19.8 °C | +0.5 °C | 72 mm | -39 mm |
| Nov | 14.8 °C | +1.4 °C | 95 mm | -19 mm |
| Dec | 11.7 °C | +2.3 °C | 80 mm | -9 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 Certaldo?
Certaldo has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 13.6 °C and it receives 927 mm of precipitation per year.
What is the hottest day ever recorded in Certaldo?
The hottest day measured in Certaldo between 1940 and 2025 was 24 August 2023, reaching 37.6 °C.
What is the coldest day in Certaldo?
The coldest day measured in Certaldo between 1940 and 2025 was 15 February 1956, at -23.2 °C.
Does it snow in Certaldo?
Yes. Certaldo gets on average 10.0 cm of snow per year and has around 40 frost days.
Has the climate of Certaldo warmed?
Yes: Certaldo warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Certaldo?
The wettest day measured in Certaldo between 1940 and 2025 was 4 November 1966, with 126 mm of rain in 24 hours.
What was the windiest day in Certaldo?
The windiest day measured in Certaldo between 1940 and 2025 was 31 December 1943, with winds reaching 40.0 km/h.
What is the warmest month in Certaldo?
The warmest month in Certaldo is July (23.2 °C on average); the coldest is January (4.6 °C).
How much does it rain in Certaldo?
Certaldo receives on average 927 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in Certaldo?
Certaldo 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 Certaldo?
The heaviest 24-hour snowfall measured in Certaldo between 1940 and 2025 was 1 February 1942, with 17.0 cm.
Are there tropical nights in Certaldo?
Yes: Certaldo has on average 9 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Certaldo?
In Certaldo, between 1940 and 2025, the highest apparent temperature reached 41.4 °C on 11 August 2024, and the lowest was -27.9 °C on 15 February 1956.
Compare Certaldo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Certaldo