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Dunkerque, Hauts-de-France climate
Cfb Oceanic / temperate
Dunkerque has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 22°C, while the coldest is January averaging around 2°C at night. Around 794 mm of precipitation falls each year, peaking in October (97 mm) and easing off in April (35 mm). At latitude 51°N, day length swings from 7.7 hours in midwinter to 16.3 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Dunkerque climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 8 | 11 | 14 | 17 | 20 | 22 | 22 | 19 | 15 | 11 | 8 |
| Avg temp (°C) | 4 | 5 | 7 | 10 | 13 | 15 | 17 | 18 | 15 | 12 | 8 | 5 |
| Avg low (°C) | 2 | 2 | 3 | 5 | 8 | 11 | 13 | 13 | 11 | 8 | 5 | 2 |
| Precipitation (mm) | 52 | 50 | 45 | 35 | 51 | 62 | 75 | 75 | 78 | 97 | 94 | 79 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 8 | 11 | 14 | 17 | 20 |
| Avg temp (°C) | 4 | 5 | 7 | 10 | 13 | 15 |
| Avg low (°C) | 2 | 2 | 3 | 5 | 8 | 11 |
| Precipitation (mm) | 52 | 50 | 45 | 35 | 51 | 62 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 19 | 15 | 11 | 8 |
| Avg temp (°C) | 17 | 18 | 15 | 12 | 8 | 5 |
| Avg low (°C) | 13 | 13 | 11 | 8 | 5 | 2 |
| Precipitation (mm) | 75 | 75 | 78 | 97 | 94 | 79 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 78 | 75 | 70 | 69 | 71 | 68 | 70 | 72 | 77 | 81 | 81 |
| Relative humidity (%) | 91 | 88 | 85 | 82 | 81 | 81 | 81 | 81 | 83 | 86 | 90 | 91 |
| Wind speed (mph) | 11.1 | 10.5 | 9.5 | 8.1 | 7.9 | 7.5 | 7.4 | 7.5 | 8.3 | 9.5 | 10.0 | 10.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 78 | 75 | 70 | 69 | 71 |
| Relative humidity (%) | 91 | 88 | 85 | 82 | 81 | 81 |
| Wind speed (mph) | 11.1 | 10.5 | 9.5 | 8.1 | 7.9 | 7.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 70 | 72 | 77 | 81 | 81 |
| Relative humidity (%) | 81 | 81 | 83 | 86 | 90 | 91 |
| Wind speed (mph) | 7.4 | 7.5 | 8.3 | 9.5 | 10.0 | 10.6 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Koksijde, a weather station, about 20 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.