Weather in Brittany, France in September

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Visiting Brittany, France in September

September is one of the best months to visit Brittany for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

The weather in September is marginally cooler than the previous month and temperatures continue to drop into October. September has average maximum temperatures of 20°C (68°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 46.1% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.8 hours of sunshine per day.

September has total rainfall of 0.1cm (0.0inches) making it mostly dry but with short lived occasional showers. There are only 12.2 days with some rainfall so you can still enjoy the beach on the majority of days.

Sea temperatures are a chilly 19°C (66°F). September is a little too cold to enjoy swimming in Brittany for prolonged periods of time. The sea temperature in September is marginally cooler than the previous month and temperatures continue to drop slightly into October.

Also consider visiting Brittany in one of the other best months of June, July, August, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in Brittany in September?

Yes, September is a good time for sunbathing in Brittany.

September has average maximum temperatures of 20°C (68°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 46.1% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.8 hours of sunshine per day. September has total rainfall of 0.1cm (0.0inches) making it mostly dry but with short lived occasional showers. There are only 12.2 days with some rainfall so you can still enjoy the beach on the majority of days.

More about September temperature and sunshine.

Can you swim in Brittany in September?

Probably not, September is a little too cold to enjoy swimming in Brittany for prolonged periods of time with the sea water at 19°C (66°F).

More about September sea temperatures.

Is September a good time to holiday in Brittany?

Yes, September is a good time for a holiday in Brittany.

September has average maximum temperatures of 20°C (68°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 46.1% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.8 hours of sunshine per day. September has total rainfall of 0.1cm (0.0inches) making it mostly dry but with short lived occasional showers. There are only 12.2 days with some rainfall so you can still enjoy the beach on the majority of days. Sea temperatures are a chilly 19°C (66°F). September is a little too cold to enjoy swimming in Brittany for prolonged periods of time.

More about the September temperatures and sunshine.

Is Brittany warm in September?

Yes, Brittany is nice and warm and makes sunbathing pleasant on clear days in September.

The average maximum temperature in Brittany in September is 20°C (68°F). The average maximum temperature is 21°C (70°) in the previous month and 17°C (62°F) in the next month.

The average temperature in Brittany in September is 16°C (60°F). The average temperature is 17°C (63°F) in the previous month and 13°C (56°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Brittany in September?

The average day light hours per day in Brittany in September are 12.6. The sunshine percentage is 46.1% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.8 hours of sunshine per day.

More about September sunshine.

Temperature in Brittany in September

The weather in September is marginally cooler than the previous month and temperatures continue to drop into October. The average maximum temperature in Brittany in September is 20°C (68°F). The average maximum temperature is 21°C (70°F) in the previous month and 17°C (62°F) in the next month.

The average temperature in Brittany in September is 16°C (60°F). The average temperature is 17°C (63°F) in the previous month and 13°C (56°F) in the next month.

The average minimum temperature in Brittany in September is 12°C (53°F). The minimum temperature is 13°C (56°F) in the previous month and 10°C (50°F) in the next month.

Sunshine in Brittany in September

The days in September are shorter than the previous month and days continue to get shorter into October. September has far fewer hours of sunshine than the previous month and hours of sunshine continue to drop quickly into October. During September the average day light hours are 12.6 per day in Brittany. The sunshine percentage is 46.1% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.8 hours of sunshine per day.

The ultraviolet index in Brittany in September is typically 4.9 during September. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Brittany in September

The average sea water temperature in Brittany in September is 18.8°C (65.8°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water. The sea temperature in September is marginally cooler than the previous month and temperatures continue to drop slightly into October.

Rainfall in Brittany in September

September weather is slightly drier than the previous month. September has fewer days of rain than the previous month. The average total rainfall in Brittany in September is 0.1cm (0.0inches) and on average there are 12.2 rainy days in September making it a pretty wet time to visit the beach.

Humidity in Brittany in September

The maximum dew point (an indicator of humidity) in Brittany in September is 15°C (58°F) which is comfortable for everyone. The dew point is 16°C (60°F) in the previous month and 13°C (13°F) in the next month.

The average maximum relative humidity in Brittany in September is typically 97.4%. The maximum relative humidity is 97.4% in the previous month and 97.6% in the next month.

The average relative humidity in Brittany in September is typically 82.6%. The average relative humidity is 82.3% in the previous month and 85.8% in the next month.

Wind Speed in Brittany in September

The average maximum wind speed in Brittany in September is typically 23KM/H (14MPH). The average maximum wind speed is 25KM/H (15MPH) in the previous month and 25KM/H (16MPH) in the next month.

The average wind speed in Brittany in September is typically 12KM/H (8MPH). The average wind speed is 13KM/H (8MPH) in the previous month and 14KM/H (9MPH) in the next month.

The average wind direction in Brittany in September is from the West-Northwest.

Monthly Averages

Suggested Beaches in September

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.