Swimming in Normandy in september 2025 Sea temperature by city in september
Do you want to go to the beach in Normandy 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 Normandy by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Normandy in september 2025
Here, find the average sea temperature in Normandy in september in several coastal cities.
Manche in september
64°F
min: 63°F / max: 66°F
65°F
min: 63°F / max: 67°F
65°F
min: 63°F / max: 67°F
65°F
min: 63°F / max: 66°F
65°F
min: 63°F / max: 67°F
Tatihou
64°F
min: 63°F / max: 66°F
Calvados in september
65°F
min: 63°F / max: 67°F
65°F
min: 63°F / max: 66°F
65°F
min: 63°F / max: 67°F
65°F
min: 63°F / max: 67°F
65°F
min: 63°F / max: 67°F
65°F
min: 63°F / max: 66°F
Seine-Maritime in september
65°F
min: 63°F / max: 67°F
65°F
min: 64°F / max: 67°F
65°F
min: 63°F / max: 67°F
Fécamp
64°F
min: 63°F / max: 67°F
Veules-les-Roses
65°F
min: 63°F / max: 66°F
Cauville-sur-Mer
65°F
min: 63°F / max: 67°F
Where should you go swimming in Normandy in the month of september?
Swimming in Normandy in september is cool
In september in Normandy swimming conditions are generally the same everywhere.
Swimming in september in Cherbourg-Octeville (Cotentin), Deauville, Dieppe, Mont Saint-Michel, Cabourg, Granville, Le Havre, Honfleur, Ouistreham, Barfleur, Barneville-Carteret, Étretat, Fécamp, Tatihou, Chausey islands, La Hague, Pirou Plage, Saint-Germain-sur-Ay, Saint-Laurent-sur-Mer, Surtainville, Veules-les-Roses, Vierville-sur-Mer, Villerville, Bernieres-sur-Mer, Blonville-sur-Mer, Cauville-sur-Mer, Courseulles-sur-Mer, Criel-sur-Mer, Fermanville, Flamanville, Gouville-sur-Mer, Grandcamp-Maisy, Hautot-sur-Mer, Houlgate, Langrune-sur-Mer, Le Treport, Luc-sur-Mer, Montmartin-sur-Mer, Octeville-sur-Mer, Port-en-Bessin-Huppain, Portbail, Saint-Aubin-sur-Mer, Saint-Jouin-Bruneval, Saint-Martin-en-Campagne, Saint-Pair-sur-Mer, Saint-Vaast-la-Hougue, Saint-Valery-en-Caux, Trouville-sur-Mer, Urville-Nacqueville, Ver-sur-Mer and Villers-sur-Mer is possible but the sea is generally cool. So though the sea temperature may sometimes reach 66°F, it can also go as low as 63°F. Note that the average is 64°F.
Where to go swimming in Normandy in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Cherbourg-Octeville (Cotentin)
| September | |||
| Average sea temperature | 64°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 66°F | ||
| Average outside temperature | 63°F | ||
| Maximum outside temperature | 65°F | ||
| Minimum outside temperature | 59°F | ||
| Precipitation | 2.9in | ||
| Number of days of precipitation | 4 jour(s) (14%) | ||
| Cloud cover | 41% | ||
| Our opinion | cool swimming |
More information on swimming in Cherbourg-Octeville (Cotentin) in september
Deauville
| September | |||
| Average sea temperature | 65°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 67°F | ||
| Average outside temperature | 63°F | ||
| Maximum outside temperature | 68°F | ||
| Minimum outside temperature | 58°F | ||
| Precipitation | 3.1in | ||
| Number of days of precipitation | 6 jour(s) (18%) | ||
| Cloud cover | 39% | ||
| Our opinion | cool swimming |
More information on swimming in Deauville in september
Dieppe
| September | |||
| Average sea temperature | 65°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 67°F | ||
| Average outside temperature | 63°F | ||
| Maximum outside temperature | 67°F | ||
| Minimum outside temperature | 59°F | ||
| Precipitation | 2.6in | ||
| Number of days of precipitation | 5 jour(s) (16%) | ||
| Cloud cover | 39% | ||
| Our opinion | cool swimming |
More information on swimming in Dieppe in september
Mont Saint-Michel
| September | |||
| Average sea temperature | 65°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 67°F | ||
| Average outside temperature | 63°F | ||
| Maximum outside temperature | 68°F | ||
| Minimum outside temperature | 58°F | ||
| Precipitation | 2.2in | ||
| Number of days of precipitation | 3 jour(s) (11%) | ||
| Cloud cover | 37% | ||
| Our opinion | cool swimming |
More information on swimming in Mont Saint-Michel in september
Cabourg
| September | |||
| Average sea temperature | 65°F | ||
| Minimum sea temperature | 63°F | ||
| Maximum sea temperature | 66°F | ||
| Average outside temperature | 63°F | ||
| Maximum outside temperature | 68°F | ||
| Minimum outside temperature | 58°F | ||
| Precipitation | 3.1in | ||
| Number of days of precipitation | 6 jour(s) (18%) | ||
| Cloud cover | 39% | ||
| Our opinion | cool swimming |
More information on swimming in Cabourg in september
List of coastal cities in Normandy
| Cherbourg-Octeville (Cotentin) in september | cool swimming |
| Deauville in september | cool swimming |
| Dieppe in september | cool swimming |
| Mont Saint-Michel in september | cool swimming |
| Cabourg in september | cool swimming |
| Granville in september | cool swimming |
| Le Havre in september | cool swimming |
| Honfleur in september | cool swimming |
| Ouistreham in september | cool swimming |
| Barfleur in september | cool swimming |
| Barneville-Carteret in september | cool swimming |
| Étretat in september | cool swimming |
| Fécamp in september | cool swimming |
| Tatihou in september | cool swimming |
| Chausey islands in september | cool swimming |
| La Hague in september | cool swimming |
| Pirou Plage in september | cool swimming |
| Saint-Germain-sur-Ay in september | cool swimming |
| Saint-Laurent-sur-Mer in september | cool swimming |
| Surtainville in september | cool swimming |
| Veules-les-Roses in september | cool swimming |
| Vierville-sur-Mer in september | cool swimming |
| Villerville in september | cool swimming |
| Bernieres-sur-Mer in september | cool swimming |
| Blonville-sur-Mer in september | cool swimming |
| Cauville-sur-Mer in september | cool swimming |
| Courseulles-sur-Mer in september | cool swimming |
| Criel-sur-Mer in september | cool swimming |
| Fermanville in september | cool swimming |
| Flamanville in september | cool swimming |
| Gouville-sur-Mer in september | cool swimming |
| Grandcamp-Maisy in september | cool swimming |
| Hautot-sur-Mer in september | cool swimming |
| Houlgate in september | cool swimming |
| Langrune-sur-Mer in september | cool swimming |
| Le Treport in september | cool swimming |
| Luc-sur-Mer in september | cool swimming |
| Montmartin-sur-Mer in september | cool swimming |
| Octeville-sur-Mer in september | cool swimming |
| Port-en-Bessin-Huppain in september | cool swimming |
| Portbail in september | cool swimming |
| Saint-Aubin-sur-Mer in september | cool swimming |
| Saint-Jouin-Bruneval in september | cool swimming |
| Saint-Martin-en-Campagne in september | cool swimming |
| Saint-Pair-sur-Mer in september | cool swimming |
| Saint-Vaast-la-Hougue in september | cool swimming |
| Saint-Valery-en-Caux in september | cool swimming |
| Trouville-sur-Mer in september | cool swimming |
| Urville-Nacqueville in september | cool swimming |
| Ver-sur-Mer in september | cool swimming |
| Villers-sur-Mer in september | cool swimming |