Douarnenez climate — normals and trends
Douarnenez (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 12.2 °C and it receives 931 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 (17.0 °C on average) and the coldest is February (7.7 °C). Rainfall peaks in December.
Douarnenez averages 2 frost days, 0 hot days (≥ 30 °C) and 148 rainy days per year.
Douarnenez has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 3 to 1 per year over the period.
The hottest day of the period reached 28.3 °C (on 18 July 2022) and the coldest -6.3 °C (on 13 January 1987).
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
DouarnenezBrittany Region
- coords
- 48.10°, -4.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.2°C
Average daily high
13.5°C
Average daily low
10.9°C
Annual rainfall
931mm
Sunshine / day
9.0h
Mean relative humidity
82%
Average peak wind
27.7km/h
Seasonal range
9.3°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
148 d/yr
Annual snowfall
1.6 cm
Average feels-like high
11.1 °C
Average feels-like low
7.3 °C
Average peak gust
42.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.30 · 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
28.3 °C
18 July 2022
Coldest day
-6.3 °C
13 January 1987
Wettest day
52 mm
21 August 1944
Windiest day
88.9 km/h
16 October 1987
Strongest gust
142.6 km/h
16 October 1987
Hottest feels-like
30.6 °C
12 July 1983
Coldest feels-like
-15.0 °C
12 January 1987
Snowiest day
7.8 cm
19 February 1963
Sunniest day
15.3 h
15 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 9.8 °C | +0.6 °C | 199 mm | +90 mm |
| Feb | 9.6 °C | +0.6 °C | 68 mm | -19 mm |
| Mar | 11.2 °C | +1.0 °C | 30 mm | -46 mm |
| Apr | 14.4 °C | +2.7 °C | 82 mm | +20 mm |
| May | 16.1 °C | +2.0 °C | 54 mm | -7 mm |
| Jun | 18.6 °C | +2.0 °C | 38 mm | -8 mm |
| Jul | 19.3 °C | +1.2 °C | 38 mm | -5 mm |
| Aug | 20.0 °C | +1.7 °C | 33 mm | -18 mm |
| Sep | 17.1 °C | -0.2 °C | 65 mm | +2 mm |
| Oct | 16.1 °C | +1.1 °C | 101 mm | +6 mm |
| Nov | 13.6 °C | +1.5 °C | 124 mm | +9 mm |
| Dec | 11.0 °C | +0.7 °C | 169 mm | +46 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 Douarnenez?
Douarnenez has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 12.2 °C and it receives 931 mm of precipitation per year.
What is the hottest day ever recorded in Douarnenez?
The hottest day measured in Douarnenez between 1940 and 2025 was 18 July 2022, reaching 28.3 °C.
What is the coldest day in Douarnenez?
The coldest day measured in Douarnenez between 1940 and 2025 was 13 January 1987, at -6.3 °C.
Does it snow in Douarnenez?
Yes. Douarnenez gets on average 1.6 cm of snow per year and has around 2 frost days.
Has the climate of Douarnenez warmed?
Yes: Douarnenez warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Douarnenez?
The wettest day measured in Douarnenez between 1940 and 2025 was 21 August 1944, with 52 mm of rain in 24 hours.
What was the windiest day in Douarnenez?
The windiest day measured in Douarnenez between 1940 and 2025 was 16 October 1987, with winds reaching 88.9 km/h.
What is the warmest month in Douarnenez?
The warmest month in Douarnenez is August (17.0 °C on average); the coldest is February (7.7 °C).
How much does it rain in Douarnenez?
Douarnenez receives on average 931 mm of precipitation per year, spread over about 148 rainy days.
Is it sunny in Douarnenez?
Douarnenez gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Douarnenez?
The heaviest 24-hour snowfall measured in Douarnenez between 1940 and 2025 was 19 February 1963, with 7.8 cm.
Are there tropical nights in Douarnenez?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Douarnenez.
What was the most extreme apparent temperature in Douarnenez?
In Douarnenez, between 1940 and 2025, the highest apparent temperature reached 30.6 °C on 12 July 1983, and the lowest was -15.0 °C on 12 January 1987.
Compare Douarnenez with another city
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Nearby cities
The climate around Douarnenez