Tonnerre climate — normals and trends
Tonnerre (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.8 °C and it receives 845 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 (19.2 °C on average) and the coldest is January (2.7 °C). Rainfall peaks in December.
Tonnerre averages 51 frost days, 9 hot days (≥ 30 °C) and 145 rainy days per year.
Tonnerre 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 62 to 40 per year over the period.
The hottest day of the period reached 40.3 °C (on 25 July 2019) and the coldest -20.8 °C (on 22 January 1942).
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
TonnerreBourgogne
- coords
- 47.86°, 3.97°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.8°C
Average daily high
14.8°C
Average daily low
7.1°C
Annual rainfall
845mm
Sunshine / day
8.0h
Mean relative humidity
78%
Average peak wind
16.8km/h
Seasonal range
16.5°C
Frost days (< 0 °C)
51 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
145 d/yr
Annual snowfall
22.0 cm
Average feels-like high
12.7 °C
Average feels-like low
4.5 °C
Average peak gust
34.9 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.38 · 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
40.3 °C
25 July 2019
Coldest day
-20.8 °C
22 January 1942
Wettest day
60 mm
16 September 1986
Windiest day
58.9 km/h
26 December 1999
Strongest gust
135.0 km/h
26 December 1999
Hottest feels-like
41.3 °C
27 June 2019
Coldest feels-like
-25.9 °C
22 January 1942
Snowiest day
16.9 cm
28 November 1947
Sunniest day
15.4 h
3 July 2011
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 | 7.2 °C | +2.0 °C | 99 mm | +22 mm |
| Feb | 8.5 °C | +1.5 °C | 52 mm | -18 mm |
| Mar | 13.5 °C | +2.5 °C | 51 mm | -15 mm |
| Apr | 18.0 °C | +3.6 °C | 45 mm | -22 mm |
| May | 20.4 °C | +2.1 °C | 39 mm | -40 mm |
| Jun | 27.4 °C | +5.6 °C | 23 mm | -43 mm |
| Jul | 25.7 °C | +1.6 °C | 73 mm | +14 mm |
| Aug | 26.7 °C | +2.9 °C | 92 mm | +31 mm |
| Sep | 19.9 °C | -0.6 °C | 106 mm | +41 mm |
| Oct | 15.8 °C | +0.3 °C | 82 mm | +10 mm |
| Nov | 11.2 °C | +1.8 °C | 93 mm | +14 mm |
| Dec | 8.7 °C | +2.6 °C | 57 mm | -26 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 Tonnerre?
Tonnerre has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.8 °C and it receives 845 mm of precipitation per year.
What is the hottest day ever recorded in Tonnerre?
The hottest day measured in Tonnerre between 1940 and 2025 was 25 July 2019, reaching 40.3 °C.
What is the coldest day in Tonnerre?
The coldest day measured in Tonnerre between 1940 and 2025 was 22 January 1942, at -20.8 °C.
Does it snow in Tonnerre?
Yes. Tonnerre gets on average 22.0 cm of snow per year and has around 51 frost days.
Has the climate of Tonnerre warmed?
Yes: Tonnerre warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tonnerre?
The wettest day measured in Tonnerre between 1940 and 2025 was 16 September 1986, with 60 mm of rain in 24 hours.
What was the windiest day in Tonnerre?
The windiest day measured in Tonnerre between 1940 and 2025 was 26 December 1999, with winds reaching 58.9 km/h.
What is the warmest month in Tonnerre?
The warmest month in Tonnerre is July (19.2 °C on average); the coldest is January (2.7 °C).
How much does it rain in Tonnerre?
Tonnerre receives on average 845 mm of precipitation per year, spread over about 145 rainy days.
Is it sunny in Tonnerre?
Tonnerre gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tonnerre?
The heaviest 24-hour snowfall measured in Tonnerre between 1940 and 2025 was 28 November 1947, with 16.9 cm.
Are there tropical nights in Tonnerre?
Yes: Tonnerre has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tonnerre?
In Tonnerre, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 27 June 2019, and the lowest was -25.9 °C on 22 January 1942.
Compare Tonnerre with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tonnerre