Swimming in French Riviera and Provence in september 2025 Sea temperature by city in september
Do you want to go to the beach in French Riviera and Provence 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 French Riviera and Provence by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in French Riviera and Provence in september 2025
Here, find the average sea temperature in French Riviera and Provence in september in several coastal cities.
Bouches-du-Rhône in september
72°F
min: 69°F / max: 75°F
72°F
min: 68°F / max: 76°F
72°F
min: 68°F / max: 76°F
72°F
min: 69°F / max: 74°F
Carry-le-Rouet
72°F
min: 68°F / max: 76°F
Martigues
72°F
min: 69°F / max: 75°F
Alpes-Maritimes in september
72°F
min: 69°F / max: 76°F
72°F
min: 69°F / max: 76°F
72°F
min: 69°F / max: 76°F
72°F
min: 69°F / max: 76°F
72°F
min: 69°F / max: 76°F
Saint-Honorat Island (Île Saint-Honorat)
73°F
min: 69°F / max: 76°F
Principality of Monaco in september
73°F
min: 69°F / max: 76°F
Var in september
72°F
min: 69°F / max: 75°F
72°F
min: 68°F / max: 76°F
72°F
min: 68°F / max: 76°F
72°F
min: 69°F / max: 75°F
72°F
min: 68°F / max: 76°F
72°F
min: 68°F / max: 76°F
Where should you go swimming in French Riviera and Provence in the month of september?
Swimming in French Riviera and Provence in september is pleasant
In september in French Riviera and Provence swimming conditions are generally the same everywhere.
As for Marseille, Cannes, Monaco, Nice, Saint-Tropez, Toulon, Antibes, Bormes-les-Mimosas, Cassis, Fréjus, Hyères, Juan-les-Pins, La Ciotat, Lavandou, Menton, Ramatuelle, Saint-Raphaël, Sainte-Maxime, Bandol, Cavalaire, Saint-Honorat Island (Île Saint-Honorat), Sainte-Marguerite Island, Porquerolles, La Croix-Valmer, La Fos-sur-Mer, La Londe-les-Maures, Saint-Aygulf, Saint-Laurent-du-Var, Sanary-sur-Mer, Six-Fours-les-Plages, Beaulieu-sur-Mer, Cagnes-sur-Mer, Cap-d'Ail, Carry-le-Rouet, La Seyne-sur-Mer, Le Pradet, Mandelieu-la-Napoule, Martigues, Port-de-Bouc, Roquebrune-Cap-Martin, Roquebrune-sur-Argens, Saint-Cyr-sur-Mer, Saint-Jean-Cap-Ferrat, Saint-Mandrier-sur-Mer, Vallauris and Villefranche-sur-Mer, swimming is pleasant in september. The sea water is 72°F on average (min: 69°F/max: 75°F) so you can easily spend time in the water.
Where to go swimming in French Riviera and Provence in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Marseille
| September | |||
| Average sea temperature | 72°F | ||
| Minimum sea temperature | 69°F | ||
| Maximum sea temperature | 75°F | ||
| Average outside temperature | 74°F | ||
| Maximum outside temperature | 77°F | ||
| Minimum outside temperature | 68°F | ||
| Precipitation | 2.3in | ||
| Number of days of precipitation | 3 jour(s) (10%) | ||
| Cloud cover | 17% | ||
| Our opinion | pleasant swimming |
More information on swimming in Marseille in september
Cannes
| September | |||
| Average sea temperature | 72°F | ||
| Minimum sea temperature | 69°F | ||
| Maximum sea temperature | 76°F | ||
| Average outside temperature | 74°F | ||
| Maximum outside temperature | 77°F | ||
| Minimum outside temperature | 68°F | ||
| Precipitation | 2.2in | ||
| Number of days of precipitation | 2 jour(s) (7%) | ||
| Cloud cover | 16% | ||
| Our opinion | pleasant swimming |
More information on swimming in Cannes in september
Monaco
| September | |||
| Average sea temperature | 73°F | ||
| Minimum sea temperature | 69°F | ||
| Maximum sea temperature | 76°F | ||
| Average outside temperature | 72°F | ||
| Maximum outside temperature | 76°F | ||
| Minimum outside temperature | 68°F | ||
| Precipitation | 4.3in | ||
| Number of days of precipitation | 6 jour(s) (20%) | ||
| Cloud cover | 18% | ||
| Our opinion | pleasant swimming |
More information on swimming in Monaco in september
Nice
| September | |||
| Average sea temperature | 72°F | ||
| Minimum sea temperature | 69°F | ||
| Maximum sea temperature | 76°F | ||
| Average outside temperature | 68°F | ||
| Maximum outside temperature | 74°F | ||
| Minimum outside temperature | 63°F | ||
| Precipitation | 3.1in | ||
| Number of days of precipitation | 4 jour(s) (13%) | ||
| Cloud cover | 17% | ||
| Our opinion | pleasant swimming |
More information on swimming in Nice in september
Saint-Tropez
| September | |||
| Average sea temperature | 72°F | ||
| Minimum sea temperature | 69°F | ||
| Maximum sea temperature | 75°F | ||
| Average outside temperature | 72°F | ||
| Maximum outside temperature | 77°F | ||
| Minimum outside temperature | 67°F | ||
| Precipitation | 2.6in | ||
| Number of days of precipitation | 3 jour(s) (10%) | ||
| Cloud cover | 16% | ||
| Our opinion | pleasant swimming |
More information on swimming in Saint-Tropez in september
List of coastal cities in French Riviera and Provence
| Marseille in september | pleasant swimming |
| Cannes in september | pleasant swimming |
| Monaco in september | pleasant swimming |
| Nice in september | pleasant swimming |
| Saint-Tropez in september | pleasant swimming |
| Toulon in september | pleasant swimming |
| Antibes in september | pleasant swimming |
| Bormes-les-Mimosas in september | pleasant swimming |
| Cassis in september | pleasant swimming |
| Fréjus in september | pleasant swimming |
| Hyères in september | pleasant swimming |
| Juan-les-Pins in september | pleasant swimming |
| La Ciotat in september | pleasant swimming |
| Lavandou in september | pleasant swimming |
| Menton in september | pleasant swimming |
| Ramatuelle in september | pleasant swimming |
| Saint-Raphaël in september | pleasant swimming |
| Sainte-Maxime in september | pleasant swimming |
| Bandol in september | pleasant swimming |
| Cavalaire in september | pleasant swimming |
| Saint-Honorat Island (Île Saint-Honorat) in september | pleasant swimming |
| Sainte-Marguerite Island in september | pleasant swimming |
| Porquerolles in september | pleasant swimming |
| La Croix-Valmer in september | pleasant swimming |
| La Fos-sur-Mer in september | pleasant swimming |
| La Londe-les-Maures in september | pleasant swimming |
| Saint-Aygulf in september | pleasant swimming |
| Saint-Laurent-du-Var in september | pleasant swimming |
| Sanary-sur-Mer in september | pleasant swimming |
| Six-Fours-les-Plages in september | pleasant swimming |
| Beaulieu-sur-Mer in september | pleasant swimming |
| Cagnes-sur-Mer in september | pleasant swimming |
| Cap-d'Ail in september | pleasant swimming |
| Carry-le-Rouet in september | pleasant swimming |
| La Seyne-sur-Mer in september | pleasant swimming |
| Le Pradet in september | pleasant swimming |
| Mandelieu-la-Napoule in september | pleasant swimming |
| Martigues in september | pleasant swimming |
| Port-de-Bouc in september | pleasant swimming |
| Roquebrune-Cap-Martin in september | pleasant swimming |
| Roquebrune-sur-Argens in september | pleasant swimming |
| Saint-Cyr-sur-Mer in september | pleasant swimming |
| Saint-Jean-Cap-Ferrat in september | pleasant swimming |
| Saint-Mandrier-sur-Mer in september | pleasant swimming |
| Vallauris in september | pleasant swimming |
| Villefranche-sur-Mer in september | pleasant swimming |