Chantonnay climate — normals and trends
Chantonnay (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.7 °C and it receives 756 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 (19.1 °C on average) and the coldest is January (4.8 °C). Rainfall peaks in December.
Chantonnay averages 34 frost days, 7 hot days (≥ 30 °C) and 127 rainy days per year.
Chantonnay has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 43 to 25 per year over the period.
The hottest day of the period reached 40.4 °C (on 18 July 2022) and the coldest -15.2 °C (on 10 February 1986).
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
ChantonnayPays de la Loire Region
- coords
- 46.69°, -1.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.7°C
Average daily high
15.7°C
Average daily low
8.0°C
Annual rainfall
756mm
Sunshine / day
8.6h
Mean relative humidity
79%
Average peak wind
18.7km/h
Seasonal range
14.3°C
Frost days (< 0 °C)
34 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
127 d/yr
Annual snowfall
4.9 cm
Average feels-like high
13.7 °C
Average feels-like low
5.5 °C
Average peak gust
37.7 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
12.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.34 · 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
40.4 °C
18 July 2022
Coldest day
-15.2 °C
10 February 1986
Wettest day
50 mm
11 January 1993
Windiest day
58.1 km/h
25 May 1967
Strongest gust
126.7 km/h
26 December 1999
Hottest feels-like
40.8 °C
29 July 2024
Coldest feels-like
-20.5 °C
10 February 1986
Snowiest day
13.7 cm
26 January 1945
Sunniest day
15.6 h
22 June 2018
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 | 8.6 °C | +1.0 °C | 164 mm | +89 mm |
| Feb | 10.2 °C | +1.2 °C | 58 mm | -8 mm |
| Mar | 13.5 °C | +1.5 °C | 47 mm | -16 mm |
| Apr | 17.9 °C | +3.2 °C | 81 mm | +20 mm |
| May | 20.6 °C | +2.4 °C | 26 mm | -45 mm |
| Jun | 27.2 °C | +5.4 °C | 22 mm | -28 mm |
| Jul | 26.3 °C | +2.4 °C | 42 mm | -0 mm |
| Aug | 27.8 °C | +4.0 °C | 39 mm | -8 mm |
| Sep | 20.5 °C | -0.7 °C | 50 mm | -3 mm |
| Oct | 17.7 °C | +1.0 °C | 71 mm | -0 mm |
| Nov | 13.3 °C | +1.9 °C | 68 mm | -9 mm |
| Dec | 9.7 °C | +1.3 °C | 63 mm | -16 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 Chantonnay?
Chantonnay has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.7 °C and it receives 756 mm of precipitation per year.
What is the hottest day ever recorded in Chantonnay?
The hottest day measured in Chantonnay between 1940 and 2025 was 18 July 2022, reaching 40.4 °C.
What is the coldest day in Chantonnay?
The coldest day measured in Chantonnay between 1940 and 2025 was 10 February 1986, at -15.2 °C.
Does it snow in Chantonnay?
Yes. Chantonnay gets on average 4.9 cm of snow per year and has around 34 frost days.
Has the climate of Chantonnay warmed?
Yes: Chantonnay warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chantonnay?
The wettest day measured in Chantonnay between 1940 and 2025 was 11 January 1993, with 50 mm of rain in 24 hours.
What was the windiest day in Chantonnay?
The windiest day measured in Chantonnay between 1940 and 2025 was 25 May 1967, with winds reaching 58.1 km/h.
What is the warmest month in Chantonnay?
The warmest month in Chantonnay is July (19.1 °C on average); the coldest is January (4.8 °C).
How much does it rain in Chantonnay?
Chantonnay receives on average 756 mm of precipitation per year, spread over about 127 rainy days.
Is it sunny in Chantonnay?
Chantonnay gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chantonnay?
The heaviest 24-hour snowfall measured in Chantonnay between 1940 and 2025 was 26 January 1945, with 13.7 cm.
Are there tropical nights in Chantonnay?
Yes: Chantonnay has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chantonnay?
In Chantonnay, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 29 July 2024, and the lowest was -20.5 °C on 10 February 1986.
Compare Chantonnay with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chantonnay