Skip to content
seatemperatures.net

Warmest sea in France in September

477 coastal locations in France ranked by their typical September sea temperature. Region-wide average in September: 19.4°C. The top of the list is where to find the warmest swimming this month.

Warmest in September

lies Wallis (Mata-Utu)

28.4°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
J
F
M
A
M
J
J
A
S
O
N
D
  • 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, useful for trip planning weeks or months ahead.

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 warmest France locations in September

Sorted by the typical September mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# 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
11 Lake Bourget 24.0°C
12 Lyon 24.0°C
13 Annecy 23.9°C
14 Menton 23.9°C
15 Roquebrune-Cap-Martin 23.9°C
16 Thonon-les-Bains 23.9°C
17 Mandelieu-la-Napoule 23.8°C
18 Theoule-sur-Mer 23.8°C
19 Antibes 23.6°C
20 Cagnes-sur-Mer 23.6°C
21 Cannes 23.6°C
22 Golfe-Juan 23.6°C
23 Juan-les-Pins 23.6°C
24 Saint-Laurent-du-Var 23.6°C
25 Sainte Marguerite Island 23.6°C
Show 25 more ▸
26 Villeneuve-Loubet 23.6°C
27 Cote d'Azur 23.4°C
28 Frejus 23.4°C
29 Les Issambres 23.4°C
30 Port Grimaud 23.4°C
31 Saint-Aygulf 23.4°C
32 Saint-Tropez 23.4°C
33 Sainte-Maxime 23.4°C
34 Beaulieu-sur-Mer 23.4°C
35 Cap d'Ail 23.4°C
36 Cap Estel 23.4°C
37 Cap Ferrat 23.4°C
38 Eze 23.4°C
39 Nice 23.4°C
40 Saint-Jean-Cap-Ferrat 23.4°C
41 Villefranche-sur-Mer 23.4°C
42 Agay 23.4°C
43 Saint-Raphael 23.4°C
44 Lake of Sainte-Croix 23.1°C
45 Cavalaire sur Mer 23.1°C
46 Gigaro 23.1°C
47 La Croix-Valmer 23.1°C
48 Pampelonne Beach 23.1°C
49 Ramatuelle 23.1°C
50 Bormes-les-Mimosas 23.0°C

Coldest 10 in France in September

Same data the other way. Helpful if you want to know which France coasts to avoid for swimming in September.

# 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

More on this region