Swimming in Roscoff in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Roscoff in september 2025.
In september, according to seasonal norms, the sea temperature in Roscoff is:
Minimum: 59°F
Average: 62°F
Maximum: 64°F
Other useful seasonal weather averages in september:
- Outside temperature: 58°F to 65°F
- Most common weather: "Clear/Sunny"
- The wind blows at 8.7mph
- It rains a total of 2.8in, over 5 day(s).
Should we swim in Roscoff in september?
No... The water temperature in Roscoff in september is cold
Swimming in Roscoff in september is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average sea temperature of 62°F (minimum: 59°F - maximum: 64°F).
Note also that in september, the climate is good with an average outside temperature of 61°F, 2.8in of precipitation (over 5 days) and 86.81 % humidity.
Water and normal seasonal temperatures in Roscoff in september
| September | |||
| Average sea temperature | 62°F | ||
| Minimum sea temperature | 59°F | ||
| Maximum sea temperature | 64°F | ||
| Average outside temperature | 63°F | ||
| Maximum outside temperature | 65°F | ||
| Minimum outside temperature | 59°F | ||
| Wind speed | 14.9mph | ||
| Wind temperature | 58°F | ||
| Precipitation | 2.8in | ||
| Number of days of rain | 5 jour(s) (15%) | ||
| Humidity | 87% | ||
| Visibility in kilometers | 9.34km | ||
| Cloud cover | 41% | ||
| Our opinion | cold swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Roscoff