Brittany water temperature in September

Is Brittany too cold to swim in autumn? In September sea water temperature throughout Brittany is not yet warm enough for swimming and does not exceed 20°C. Based on average water temperature observations over the past ten years, the warmest sea in Brittany in September was 18.4°C (in Cancale), and the coldest water 14.6°C (in Portsall). To find out the sea temperature today and in the coming days, go to Current sea temperature in Brittany

Brittany sea surface temp in September

Brittany cities and resorts with the values of the average water temperature in September in recent years.
For more detailed information about water temperature, surf forecast, weather and time of sunrise and sunset in any specific area of your interest, just click on a city name. For ease of search, all places are also grouped by the first letter of the name.

To find out what the water temperature was in Brittany any day over a period of the last ten years, select the month

Places with the warmest average sea water temperature in Brittany in September. Also indicated are the maximum and minimum temperatures in September for these locations based on observations over the past 10 years

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Bretagne, Breizh, Bertaèyn

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Our report for France is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.