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Coldest sea in France in September

477 coastal locations in France ranked by typical September sea temperature, coldest first. Region-wide average in September: 19.4°C.

Coldest in September

Sainte-Marie-sur-Mer

14.6°C September mean in France

Regional September average

19.4°C

across all 477 coastal locations in France

Vs annual mean

+4.0°C

above the year-round regional average

What the France sea feels like in September

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

France monthly average 10.9°C to 20.3°C
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  • Warmest month August 20.3°C
  • Coldest month February 10.9°C
  • Annual mean 15.3°C
  • Months above 20°C 1 of 12

Where September fits in the year

September sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve France month rankings:

France sea temperature map (live)

The map shows today's latest reading at every France location. The list below is based on the typical September mean.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 coldest France locations in September

Sorted by typical September mean from a decade of daily readings, coldest first. Click any place for the full location page.

# Location September mean
1 Sainte-Marie-sur-Mer 14.6°C
2 Landeda Brittany 14.8°C
3 Ploudalmezeau Brittany 14.8°C
4 Plouguerneau Brittany 14.8°C
5 Portsall 14.8°C
6 Saint Pabu Brittany 14.8°C
7 Camaret Sur Mer Brittany 14.9°C
8 Plougonvelin Brittany 14.9°C
9 Roscanvel Brittany 14.9°C
10 Brest Brittany 14.9°C
11 Daoulas Brittany 14.9°C
12 Lanveoc Brittany 14.9°C
13 Le Faou Brittany 14.9°C
14 Le Relecq Kerhuon Brittany 14.9°C
15 Logonna Daoulas Brittany 14.9°C
16 Plougastel-Daoulas Brittany 14.9°C
17 Porspoder Brittany 14.9°C
18 Le Conquet Brittany 15.0°C
19 Brignogan-Plage Brittany 15.0°C
20 Guisseny Brittany 15.0°C
21 Kerlouan Brittany 15.0°C
22 Plouneour Trez Brittany 15.0°C
23 L'Aber Benoit Finistère 15.1°C
24 Audierne Brittany 15.2°C
25 Morgat Brittany 15.2°C
Show 25 more ▸
26 Santec Brittany 15.4°C
27 Sibiril Brittany 15.4°C
28 Ushant Brittany 15.4°C
29 Camaret Finistère 15.5°C
30 Molene Finistère 15.5°C
31 Ile D'ouessant (Baie de Lampaul) Finistère 15.8°C
32 Carantec Brittany 16.0°C
33 Finistere Brittany 16.0°C
34 Roscoff Brittany 16.0°C
35 Anse de Primel Finistère 16.1°C
36 Ile de Sein Bretagne 16.1°C
37 Pleumeur-Bodou Brittany 16.5°C
38 Trebeurden Brittany 16.5°C
39 Tregastel Brittany 16.5°C
40 Locquemeau Brittany 16.7°C
41 Locquirec Brittany 16.7°C
42 Crozon Brittany 17.0°C
43 Douarnenez Brittany 17.0°C
44 Perros Guirec Brittany 17.1°C
45 Guilvinec Brittany 17.3°C
46 Ploneour-Lanvern Brittany 17.3°C
47 Pointe de la Torche Brittany 17.3°C
48 La Hague Normandy 17.3°C
49 Benodet Brittany 17.4°C
50 Combrit Brittany 17.4°C

Warmest 10 in France in September

Same data the other way. The warmest spots for the same month.

# Location September mean
1 lies Wallis (Mata-Utu) Hahake 28.4°C
2 Clipperton-D Overseas France 28.3°C
3 Solenzara Corsica 24.6°C
4 Centuri Corse 24.4°C
5 Ajaccio Aspretto Corse 24.4°C
6 Ajaccio Corse 24.4°C
7 l'Île-Rousse Corse 24.3°C
8 Evian-les-Bains 24.1°C
9 Aix-les-Bains 24.0°C
10 Lac d'Aiguebelette 24.0°C

More on this region