Swimming in the Pays de la Loire in september 2025 Sea temperature by city in september
Do you want to go to the beach in the Pays de la Loire in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in the Pays de la Loire by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in the Pays de la Loire in september 2025
Here, find the average sea temperature in the Pays de la Loire in september in several coastal cities.
Loire-Atlantique in september
66°F
min: 63°F / max: 69°F
65°F
min: 63°F / max: 68°F
66°F
min: 63°F / max: 68°F
66°F
min: 63°F / max: 69°F
66°F
min: 63°F / max: 68°F
Batz-sur-Mer
66°F
min: 63°F / max: 68°F
Vendée in september
66°F
min: 63°F / max: 69°F
67°F
min: 64°F / max: 71°F
67°F
min: 64°F / max: 70°F
67°F
min: 64°F / max: 69°F
66°F
min: 64°F / max: 69°F
66°F
min: 64°F / max: 69°F
Where should you go swimming in the Pays de la Loire in the month of september?
Swimming in the Pays de la Loire in september is cool
In september in the Pays de la Loire swimming conditions are generally the same everywhere.
Swimming in september in Nantes, Le Croisic, Noirmoutier Island, Jard-sur-Mer, La Baule, La Tranche-sur-Mer, Pornic, Les Sables-d'Olonne, Saint-Gilles-Croix-de-Vie, Saint-Nazaire, Yeu Island (Île d'Yeu), La Faute-sur-Mer, Port Bourgenay, Saint-Jean-de-Monts, Batz-sur-Mer, Beauvoir-sur-Mer, Bretignolles-sur-Mer, La Bernerie-en-Retz, La Plaine-sur-Mer, La Turballe, Le Pouliguen, Longeville-sur-Mer, Piriac-sur-Mer, Pornichet, Saint-Brevin-les-Pins and Saint-Hilaire-de-Riez is possible but the sea is generally cool. So though the sea temperature may sometimes reach 69°F, it can also go as low as 63°F. Note that the average is 66°F.
Where to go swimming in the Pays de la Loire in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Nantes
| September | |||
| Average sea temperature | 66°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 69°F | ||
| Average outside temperature | 65°F | ||
| Maximum outside temperature | 74°F | ||
| Minimum outside temperature | 56°F | ||
| Precipitation | 1.9in | ||
| Number of days of precipitation | 3 jour(s) (9%) | ||
| Cloud cover | 33% | ||
| Our opinion | cool swimming |
More information on swimming in Nantes in september
Le Croisic
| September | |||
| Average sea temperature | 65°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 | ||
| Precipitation | 1.9in | ||
| Number of days of precipitation | 3 jour(s) (10%) | ||
| Cloud cover | 31% | ||
| Our opinion | cool swimming |
More information on swimming in Le Croisic in september
Noirmoutier Island
| September | |||
| Average sea temperature | 66°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 69°F | ||
| Average outside temperature | 65°F | ||
| Maximum outside temperature | 72°F | ||
| Minimum outside temperature | 58°F | ||
| Precipitation | 1.9in | ||
| Number of days of precipitation | 3 jour(s) (10%) | ||
| Cloud cover | 31% | ||
| Our opinion | cool swimming |
More information on swimming in Noirmoutier Island in september
Jard-sur-Mer
| September | |||
| Average sea temperature | 67°F | ||
| Minimum sea temperature | 64°F | ||
| Maximum sea temperature | 71°F | ||
| Average outside temperature | 67°F | ||
| Maximum outside temperature | 70°F | ||
| Minimum outside temperature | 61°F | ||
| Precipitation | 2.6in | ||
| Number of days of precipitation | 4 jour(s) (13%) | ||
| Cloud cover | 31% | ||
| Our opinion | cool swimming |
More information on swimming in Jard-sur-Mer in september
La Baule
| 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 | ||
| Precipitation | 1.9in | ||
| Number of days of precipitation | 3 jour(s) (10%) | ||
| Cloud cover | 31% | ||
| Our opinion | cool swimming |
More information on swimming in La Baule in september
List of coastal cities in the Pays de la Loire
| Nantes in september | cool swimming |
| Le Croisic in september | cool swimming |
| Noirmoutier Island in september | cool swimming |
| Jard-sur-Mer in september | cool swimming |
| La Baule in september | cool swimming |
| La Tranche-sur-Mer in september | cool swimming |
| Pornic in september | cool swimming |
| Les Sables-d'Olonne in september | cool swimming |
| Saint-Gilles-Croix-de-Vie in september | cool swimming |
| Saint-Nazaire in september | cool swimming |
| Yeu Island (Île d'Yeu) in september | cool swimming |
| La Faute-sur-Mer in september | cool swimming |
| Port Bourgenay in september | cool swimming |
| Saint-Jean-de-Monts in september | cool swimming |
| Batz-sur-Mer in september | cool swimming |
| Beauvoir-sur-Mer in september | cool swimming |
| Bretignolles-sur-Mer in september | cool swimming |
| La Bernerie-en-Retz in september | cool swimming |
| La Plaine-sur-Mer in september | cool swimming |
| La Turballe in september | cool swimming |
| Le Pouliguen in september | cool swimming |
| Longeville-sur-Mer in september | cool swimming |
| Piriac-sur-Mer in september | cool swimming |
| Pornichet in september | cool swimming |
| Saint-Brevin-les-Pins in september | cool swimming |
| Saint-Hilaire-de-Riez in september | cool swimming |