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Sea temperature in France in September
22°Cwarm · monthly average
The sea around France averages 22°C in September. Warm enough for relaxed swimming with no wetsuit needed.
Monthly sea temperatures across the year
Best swim months
Jul, Aug, Sep
Warmest month
August (24°C)
Coolest month
January (13°C)
Best beaches in France
Côte d'Azur
Plage de la Salis
Long sandy bay between Antibes and Cap d'Antibes.
Côte d'Azur
Plage de la Garoupe
Sheltered Cap d'Antibes beach with clear water.
Côte d'Azur
Plage de la Croisette
Cannes' signature private-club lined beach.
Côte d'Azur
Plage du Midi
Public sandy beach west of the Croisette.
Côte d'Azur
Plage Mala
Hidden cliff-stair pebble cove near Monaco.
Côte d'Azur
Larvotto Beach
Monaco's only public beach.
Côte d'Azur
Plage du Lavandou
Twelve-km Var coast sand and family beach.
Côte d'Azur
Plage de l'Almanarre
Étang-backed wind- and kite-surf beach.
Côte d'Azur
Plage de Notre-Dame
Translucent island bay in Port-Cros park.