Swimming in Dunkirk in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Dunkirk in september 2025.
In september, according to seasonal norms, the sea temperature in Dunkirk is:
Minimum: 63°F
Average: 65°F
Maximum: 68°F
Other useful seasonal weather averages in september:
- Outside temperature: 58°F to 66°F
- Most common weather: "Clear/Sunny"
- The wind blows at 8.7mph
- It rains a total of 2.9in, over 5 day(s).
Should we swim in Dunkirk in september?
Yes... and no. The water temperature in Dunkirk in september is cool
Swimming in september on the beaches of Dunkirk is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 68°F, it can also be as low as 63°F! Note that the average is 65°F.
Note also that in september, the climate is good with an average outside temperature of 62°F, 2.9in of precipitation (over 5 days) and 83.55 % humidity.
Water and normal seasonal temperatures in Dunkirk in september
| September | |||
| Average sea temperature | 65°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 68°F | ||
| Average outside temperature | 63°F | ||
| Maximum outside temperature | 67°F | ||
| Minimum outside temperature | 59°F | ||
| Wind speed | 13.7mph | ||
| Wind temperature | 58°F | ||
| Precipitation | 2.9in | ||
| Number of days of rain | 5 jour(s) (16%) | ||
| Humidity | 84% | ||
| Visibility in kilometers | 9.5km | ||
| Cloud cover | 39% | ||
| Our opinion | cool swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Dunkirk
Swim elsewhere in the North of France in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Boulogne-sur-Mer in september | 64°F | 67°F | cool swimming | Calais in september | 65°F | 67°F | cool swimming | Le Touquet in september | 64°F | 67°F | cool swimming | Bray-Dunes in september | 65°F | 68°F | cool swimming | Wissant in september | 65°F | 67°F | cool swimming | Audinghen in september | 64°F | 67°F | cool swimming | Escalles in september | 65°F | 67°F | cool swimming | Petit Fort Philippe in september | 64°F | 67°F | cool swimming |
Swim in the North of France in september: sea temperature by city