Swimming in Saint-Nazaire in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Saint-Nazaire in september 2025.
In september, according to seasonal norms, the sea temperature in Saint-Nazaire is:
Minimum: 63°F
Average: 66°F
Maximum: 68°F
Other useful seasonal weather averages in september:
- Outside temperature: 57°F to 71°F
- Most common weather: "Clear/Sunny"
- The wind blows at 8.1mph
- It rains a total of 1.9in, over 3 day(s).
Should we swim in Saint-Nazaire in september?
Yes... and no. The water temperature in Saint-Nazaire in september is cool
Swimming in september on the beaches of Saint-Nazaire 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 66°F.
Note also that in september, the climate is perfect with an average outside temperature of 64°F, 1.9in of precipitation (over 3 days) and 87.53 % humidity.
Water and normal seasonal temperatures in Saint-Nazaire in september
| September | |||
| Average sea temperature | 66°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 68°F | ||
| Average outside temperature | 65°F | ||
| Maximum outside temperature | 72°F | ||
| Minimum outside temperature | 58°F | ||
| Wind speed | 11.8mph | ||
| Wind temperature | 56°F | ||
| Precipitation | 1.9in | ||
| Number of days of rain | 3 jour(s) (10%) | ||
| Humidity | 88% | ||
| Visibility in kilometers | 9.52km | ||
| Cloud cover | 31% | ||
| Our opinion | cool swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Saint-Nazaire
Swim elsewhere in the Pays de la Loire in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Nantes in september | 66°F | 69°F | cool swimming | La Baule in september | 66°F | 68°F | cool swimming | Le Croisic in september | 65°F | 68°F | cool swimming | Pornic in september | 66°F | 69°F | cool swimming |
Swim in the Pays de la Loire in september: sea temperature by city