Swimming in Brittany in september 2025 Sea temperature by city in september

In september in Brittany swimming conditions vary by city. Details below:

Swimming in september in Lorient, Saint-Brieuc (Côtes d'Armor), Saint-Malo, Vannes, Concarneau, Dinard, Erquy, The Quiberon peninsula, Perros-Guirec, Belle-Île-en-Mer, Bénodet, Cap Fréhel, Carnac, Le Crouesty, Doëlan (Clohars-Carnoët), Fouesnant, Hoëdic, Houat, Brehat Island (Île de Bréhat), Paimpol, Sables d'Or les Pins, Binic, Cancale, Groix, Guilvinec, Lanester, Larmor-Plage, Loctudy, Louannec, Moelan-sur-Mer, Muzillac, Pleneuf-Val-Andre, Plerin, Ploemeur, Plougrescant, Pordic, Saint-Cast-le-Guildo, Saint-Lunaire, Saint-Quay-Portrieux and Sarzeau is possible but the sea is generally cool. So though the sea temperature may sometimes reach 67°F, it can also go as low as 62°F. Note that the average is 65°F.

Swimming in september in Brest, côte de granit rose (Pink Granite Coast), Douarnenez, Molene Island (Île de Molène), Sein island (Île-de-Sein), Lannion, Ouessant, Ploumanac’h, Pointe du Raz, Roscoff, Camaret-sur-Mer, Crozon, Locquemeau, Locquirec, Plogoff, Ploudalmezeau, Plouescat, Plougasnou, Plougastel-Daoulas, Plouguerneau, Plouzane, Saint-Pol-de-Léon, Trebeurden and Tregastel is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 62°F (min: 60°F/max: 65°F).