Swimming in Boulogne-sur-Mer in august 2025: Average sea temperature in august and tide times in august 2025
Average sea temperature in Boulogne-sur-Mer in august 2025.
In august, according to seasonal norms, the sea temperature in Boulogne-sur-Mer is:
Minimum: 63°F
Average: 65°F
Maximum: 67°F
Other useful seasonal weather averages in august:
- Outside temperature: 61°F to 67°F
- Most common weather: "Clear/Sunny"
- The wind blows at 9.9mph
- It rains a total of 3.9in, over 6 day(s).
Should we swim in Boulogne-sur-Mer in august?
Yes... and no. The water temperature in Boulogne-sur-Mer in august is cool
Swimming in august on the beaches of Boulogne-sur-Mer is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 67°F, it can also be as low as 63°F! Note that the average is 65°F.
Note also that in august, the climate is good with an average outside temperature of 64°F, 3.8in of precipitation (over 6 days) and 85.06 % humidity.
Water and normal seasonal temperatures in Boulogne-sur-Mer in august
| August | |||
| Average sea temperature | 65°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 67°F | ||
| Average outside temperature | 65°F | ||
| Maximum outside temperature | 68°F | ||
| Minimum outside temperature | 63°F | ||
| Wind speed | 14.9mph | ||
| Wind temperature | 61°F | ||
| Precipitation | 3.9in | ||
| Number of days of rain | 6 jour(s) (21%) | ||
| Humidity | 86% | ||
| Visibility in kilometers | 9.55km | ||
| Cloud cover | 37% | ||
| Our opinion | cool swimming |
Chart of the tides in august 2025
Tide times in august 2025 in Boulogne-sur-Mer
Swim elsewhere in the North of France in august
| City | Average T° | Min. T° | Max. T° | Our opinion | Calais in august | 64°F | 67°F | cool swimming | Dunkirk in august | 66°F | 68°F | cool swimming | Le Touquet in august | 65°F | 67°F | cool swimming | Bray-Dunes in august | 66°F | 68°F | cool swimming | Wissant in august | 65°F | 67°F | cool swimming | Audinghen in august | 65°F | 67°F | cool swimming | Escalles in august | 64°F | 67°F | cool swimming | Petit Fort Philippe in august | 64°F | 67°F | cool swimming |
Swim in the North of France in august: sea temperature by city