Dunkirk climate — normals and trends
Dunkirk (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.6 °C and it receives 665 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 (3.9 °C). Rainfall peaks in November.
Dunkirk averages 30 frost days, 2 hot days (≥ 30 °C) and 132 rainy days per year.
Dunkirk has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 45 to 15 per year over the period.
The hottest day of the period reached 38.5 °C (on 25 July 2019) and the coldest -18.3 °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
DunkirkHauts-de-France
- coords
- 51.03°, 2.38°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.6°C
Average daily high
13.6°C
Average daily low
7.8°C
Annual rainfall
665mm
Sunshine / day
8.2h
Mean relative humidity
81%
Average peak wind
21.2km/h
Seasonal range
13.7°C
Frost days (< 0 °C)
30 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
10.8 cm
Average feels-like high
11.2 °C
Average feels-like low
4.9 °C
Average peak gust
40.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °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
38.5 °C
25 July 2019
Coldest day
-18.3 °C
22 January 1942
Wettest day
53 mm
29 August 1996
Windiest day
67.1 km/h
25 January 1990
Strongest gust
130.0 km/h
18 January 2007
Hottest feels-like
40.6 °C
25 July 2019
Coldest feels-like
-23.7 °C
22 January 1942
Snowiest day
14.1 cm
11 December 2017
Sunniest day
16.0 h
11 June 1940
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 | 6.2 °C | +0.2 °C | 96 mm | +43 mm |
| Feb | 7.3 °C | +0.6 °C | 47 mm | +2 mm |
| Mar | 12.4 °C | +2.7 °C | 8 mm | -42 mm |
| Apr | 16.2 °C | +3.5 °C | 24 mm | -27 mm |
| May | 17.6 °C | +1.3 °C | 26 mm | -32 mm |
| Jun | 22.5 °C | +3.4 °C | 45 mm | -11 mm |
| Jul | 22.7 °C | +1.6 °C | 100 mm | +41 mm |
| Aug | 22.5 °C | +1.3 °C | 27 mm | -33 mm |
| Sep | 19.2 °C | +0.5 °C | 44 mm | -12 mm |
| Oct | 15.2 °C | +0.5 °C | 66 mm | +6 mm |
| Nov | 11.3 °C | +1.5 °C | 59 mm | -5 mm |
| Dec | 9.0 °C | +2.0 °C | 33 mm | -24 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 Dunkirk?
Dunkirk has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.6 °C and it receives 665 mm of precipitation per year.
What is the hottest day ever recorded in Dunkirk?
The hottest day measured in Dunkirk between 1940 and 2025 was 25 July 2019, reaching 38.5 °C.
What is the coldest day in Dunkirk?
The coldest day measured in Dunkirk between 1940 and 2025 was 22 January 1942, at -18.3 °C.
Does it snow in Dunkirk?
Yes. Dunkirk gets on average 10.8 cm of snow per year and has around 30 frost days.
Has the climate of Dunkirk warmed?
Yes: Dunkirk warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Dunkirk?
The wettest day measured in Dunkirk between 1940 and 2025 was 29 August 1996, with 53 mm of rain in 24 hours.
What was the windiest day in Dunkirk?
The windiest day measured in Dunkirk between 1940 and 2025 was 25 January 1990, with winds reaching 67.1 km/h.
What is the warmest month in Dunkirk?
The warmest month in Dunkirk is July (17.6 °C on average); the coldest is January (3.9 °C).
How much does it rain in Dunkirk?
Dunkirk receives on average 665 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Dunkirk?
Dunkirk gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Dunkirk?
The heaviest 24-hour snowfall measured in Dunkirk between 1940 and 2025 was 11 December 2017, with 14.1 cm.
Are there tropical nights in Dunkirk?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Dunkirk.
What was the most extreme apparent temperature in Dunkirk?
In Dunkirk, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 25 July 2019, and the lowest was -23.7 °C on 22 January 1942.
Compare Dunkirk with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Dunkirk