Swimming in Carnac in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Carnac in september 2025.
In september, according to seasonal norms, the sea temperature in Carnac is:
Minimum: 62°F
Average: 64°F
Maximum: 67°F
Other useful seasonal weather averages in september:
- Outside temperature: 57°F to 69°F
- Most common weather: "Clear/Sunny"
- The wind blows at 8.1mph
- It rains a total of 2in, over 3 day(s).
Should we swim in Carnac in september?
Yes... and no. The water temperature in Carnac in september is cool
Swimming in september on the beaches of Carnac 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 62°F! Note that the average is 64°F.
Note also that in september, the climate is perfect with an average outside temperature of 63°F, 2in of precipitation (over 3 days) and 86.78 % humidity.
Water and normal seasonal temperatures in Carnac in september
| September | |||
| Average sea temperature | 64°F | ||
| Minimum sea temperature | 62°F | ||
| Maximum sea temperature | 67°F | ||
| Average outside temperature | 65°F | ||
| Maximum outside temperature | 70°F | ||
| Minimum outside temperature | 58°F | ||
| Wind speed | 13.1mph | ||
| Wind temperature | 56°F | ||
| Precipitation | 2in | ||
| Number of days of rain | 3 jour(s) (11%) | ||
| Humidity | 87% | ||
| Visibility in kilometers | 9.66km | ||
| Cloud cover | 32% | ||
| Our opinion | cool swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Carnac
Swim elsewhere in Brittany in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Brest in september | 62°F | 65°F | cold swimming | Lorient in september | 65°F | 67°F | cool swimming | Saint-Brieuc (Côtes d'Armor) in september | 65°F | 67°F | cool swimming | Saint-Malo in september | 65°F | 67°F | cool swimming | Vannes in september | 65°F | 68°F | cool swimming | Concarneau in september | 63°F | 66°F | cool swimming | Dinard in september | 65°F | 67°F | cool swimming | Erquy in september | 65°F | 67°F | cool swimming | Perros-Guirec in september | 63°F | 66°F | cool swimming | The Quiberon peninsula in september | 65°F | 68°F | cool swimming | Belle-Île-en-Mer in september | 65°F | 68°F | cool swimming | Bénodet in september | 63°F | 66°F | cool swimming | Brehat Island (Île de Bréhat) in september | 64°F | 65°F | cool swimming | Cap Fréhel in september | 65°F | 67°F | cool swimming | côte de granit rose (Pink Granite Coast) in september | 61°F | 64°F | cold swimming | Doëlan (Clohars-Carnoët) in september | 63°F | 66°F | cool swimming | Douarnenez in september | 62°F | 65°F | cold swimming | Fouesnant in september | 64°F | 66°F | cool swimming | Lannion in september | 62°F | 64°F | cold swimming | Le Crouesty in september | 65°F | 68°F | cool swimming |