Combourg climate — normals and trends
Combourg (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.4 °C and it receives 755 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 (17.6 °C on average) and the coldest is January (5.4 °C). Rainfall peaks in November.
Combourg averages 21 frost days, 2 hot days (≥ 30 °C) and 138 rainy days per year.
Combourg has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 29 to 13 per year over the period.
The hottest day of the period reached 37.9 °C (on 18 July 2022) and the coldest -12.9 °C (on 17 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
CombourgBrittany Region
- coords
- 48.41°, -1.75°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.4°C
Average daily high
14.7°C
Average daily low
8.3°C
Annual rainfall
755mm
Sunshine / day
8.7h
Mean relative humidity
80%
Average peak wind
19.9km/h
Seasonal range
12.2°C
Frost days (< 0 °C)
21 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
5.3 cm
Average feels-like high
12.7 °C
Average feels-like low
5.7 °C
Average peak gust
39.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.35 · 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
37.9 °C
18 July 2022
Coldest day
-12.9 °C
17 January 1985
Wettest day
44 mm
19 July 2025
Windiest day
63.1 km/h
16 October 1987
Strongest gust
123.1 km/h
23 November 1984
Hottest feels-like
39.5 °C
5 August 2003
Coldest feels-like
-19.2 °C
17 January 1985
Snowiest day
11.6 cm
4 January 1979
Sunniest day
15.8 h
19 June 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 | 8.1 °C | +0.3 °C | 173 mm | +106 mm |
| Feb | 9.5 °C | +0.8 °C | 54 mm | -5 mm |
| Mar | 12.8 °C | +1.4 °C | 25 mm | -35 mm |
| Apr | 17.4 °C | +3.7 °C | 52 mm | -8 mm |
| May | 18.9 °C | +2.1 °C | 35 mm | -35 mm |
| Jun | 23.7 °C | +4.0 °C | 47 mm | -12 mm |
| Jul | 22.8 °C | +1.2 °C | 119 mm | +66 mm |
| Aug | 23.9 °C | +2.3 °C | 44 mm | -12 mm |
| Sep | 19.7 °C | 0.0 °C | 64 mm | +7 mm |
| Oct | 16.6 °C | +0.7 °C | 62 mm | -8 mm |
| Nov | 13.2 °C | +1.9 °C | 56 mm | -18 mm |
| Dec | 9.8 °C | +1.1 °C | 70 mm | -3 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 Combourg?
Combourg has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.4 °C and it receives 755 mm of precipitation per year.
What is the hottest day ever recorded in Combourg?
The hottest day measured in Combourg between 1940 and 2025 was 18 July 2022, reaching 37.9 °C.
What is the coldest day in Combourg?
The coldest day measured in Combourg between 1940 and 2025 was 17 January 1985, at -12.9 °C.
Does it snow in Combourg?
Yes. Combourg gets on average 5.3 cm of snow per year and has around 21 frost days.
Has the climate of Combourg warmed?
Yes: Combourg warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Combourg?
The wettest day measured in Combourg between 1940 and 2025 was 19 July 2025, with 44 mm of rain in 24 hours.
What was the windiest day in Combourg?
The windiest day measured in Combourg between 1940 and 2025 was 16 October 1987, with winds reaching 63.1 km/h.
What is the warmest month in Combourg?
The warmest month in Combourg is July (17.6 °C on average); the coldest is January (5.4 °C).
How much does it rain in Combourg?
Combourg receives on average 755 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in Combourg?
Combourg gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Combourg?
The heaviest 24-hour snowfall measured in Combourg between 1940 and 2025 was 4 January 1979, with 11.6 cm.
Are there tropical nights in Combourg?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Combourg.
What was the most extreme apparent temperature in Combourg?
In Combourg, between 1940 and 2025, the highest apparent temperature reached 39.5 °C on 5 August 2003, and the lowest was -19.2 °C on 17 January 1985.
Compare Combourg with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Combourg