Climate averages 1991–2020
Dunkirk weather
in May.
A mild, moderately wet month: the 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Dunkirk: daytime highs average 16.6°C and nights cool to about 9.5°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 59 mm of rain on roughly 11 days, which makes May a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 31 min on an average May day.
The nearest other city in this atlas is Calais (38 km away). In May its highs average 15.6°C, 0.9°C cooler than Dunkirk, with 51 mm of rain.
Among the 57 cities listed in France, Dunkirk ranks 54th of 57 for the warmest May highs and joint 14th of 57 for the driest May (rainfall, lowest first). The mean May high of those 57 cities is 18.9°C; Dunkirk is 2.4°C cooler than that mean.
From May to June, average highs rise by 2.7°C to 19.2°C, and monthly rainfall rises from 59 mm to 62 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Dunkirk climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.9°C2.6°C | 2.6°C | 56 | 11.5 | 8.58 h |
| February | 7.6°C2.6°C | 2.6°C | 48 | 10.0 | 10.010 h |
| March | 10.2°C4.1°C | 4.1°C | 48 | 10.8 | 11.812 h |
| April | 13.5°C6.2°C | 6.2°C | 48 | 10.3 | 13.814 h |
| May, selected | 16.6°C9.5°C | 9.5°C | 59 | 11.0 | 15.516 h |
| June | 19.2°C12.3°C | 12.3°C | 62 | 10.4 | 16.516 h |
| July | 21.5°C14.6°C | 14.6°C | 57 | 11.0 | 16.116 h |
| August | 21.7°C14.9°C | 14.9°C | 69 | 10.9 | 14.615 h |
| September | 18.8°C12.6°C | 12.6°C | 57 | 9.7 | 12.713 h |
| October | 14.9°C9.6°C | 9.6°C | 63 | 11.5 | 10.811 h |
| November | 10.4°C6.1°C | 6.1°C | 64 | 12.5 | 9.09 h |
| December | 7.4°C3.4°C | 3.4°C | 68 | 12.3 | 8.08 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Calais in MayFrance · 38 kmHigh 15.6°C · Low 9.6°C · 51 mm rain
- Brugge in MayBelgium · 62 kmHigh 16.2°C · Low 9.8°C · 56 mm rain
- Lille in MayFrance · 65 kmHigh 17.6°C · Low 8.8°C · 62 mm rain
- Kortrijk in MayBelgium · 66 kmHigh 17.5°C · Low 9.2°C · 62 mm rain
- Roubaix in MayFrance · 68 kmHigh 17.5°C · Low 8.9°C · 62 mm rain
- Saint Peters in MayUnited Kingdom · 76 kmHigh 14.7°C · Low 9.8°C · 49 mm rain
- Gent in MayBelgium · 94 kmHigh 17.6°C · Low 9.3°C · 61 mm rain
- Aalst in MayBelgium · 117 kmHigh 17.8°C · Low 9.3°C · 60 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Dunkirk) is explained once on the Dunkirk year overview and on the Sources, method and limits page.