Swimming in Belle-Île-en-Mer in august 2025: Average sea temperature in august and tide times in august 2025

Average sea temperature in Belle-Île-en-Mer in august 2025.

In august, according to seasonal norms, the sea temperature in Belle-Île-en-Mer is:

Minimum: 63°F

Average: 65°F

Maximum: 68°F

Other useful seasonal weather averages in august:

  • Outside temperature: 64°F to 67°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 11.2mph
  • It rains a total of 2.7in, over 5 day(s).

Should we swim in Belle-Île-en-Mer in august?

Yes... and no. The water temperature in Belle-Île-en-Mer in august is cool

Swimming in august on the beaches of Belle-Île-en-Mer is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 68°F, it can also be as low as 63°F! Note that the average is 65°F.

Note also that in august, the climate is good with an average outside temperature of 66°F, 2.7in of precipitation (over 5 days) and 82.81 % humidity.

Water and normal seasonal temperatures in Belle-Île-en-Mer in august

August
Average sea temperature 65°F
Minimum sea temperature 63°F
Maximum sea temperature 68°F
Average outside temperature 67°F
Maximum outside temperature 68°F
Minimum outside temperature 65°F
Wind speed 14.9mph
Wind temperature 65°F
Precipitation 2.7in
Number of days of rain 5 jour(s)
(15%)
Humidity 83%
Visibility in kilometers 9.62km
Cloud cover 33%
Our opinion cool swimming

Chart of the tides in august 2025

Tide times in august 2025 in Belle-Île-en-Mer

Swim elsewhere in Brittany in august

City Average T° Max. T° Our opinion
Brest in august63°F65°Fcool swimming
Lorient in august65°F67°Fcool swimming
Saint-Brieuc (Côtes d'Armor) in august65°F67°Fcool swimming
Saint-Malo in august65°F67°Fcool swimming
Vannes in august65°F68°Fcool swimming
Concarneau in august64°F66°Fcool swimming
Dinard in august65°F67°Fcool swimming
Erquy in august65°F67°Fcool swimming
Perros-Guirec in august64°F66°Fcool swimming
The Quiberon peninsula in august66°F67°Fcool swimming
Bénodet in august64°F66°Fcool swimming
Brehat Island (Île de Bréhat) in august64°F66°Fcool swimming
Cap Fréhel in august65°F67°Fcool swimming
Carnac in august65°F67°Fcool swimming
côte de granit rose (Pink Granite Coast) in august63°F65°Fcold swimming
Doëlan (Clohars-Carnoët) in august64°F66°Fcool swimming
Douarnenez in august63°F65°Fcool swimming
Fouesnant in august64°F66°Fcool swimming
Lannion in august63°F65°Fcold swimming
Le Crouesty in august65°F67°Fcool swimming

Swim in Brittany in august: sea temperature by city

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