Weather in Brittany, France in September

So you're interested in going to Brittany, France in September

September is a warm and slightly rainy time for sunbathing in Brittany. September is a little too cold to enjoy swimming in Brittany for any length of time. Consider visiting Brittany in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in Brittany in September

The average maximum temperature in Brittany in September is 20°. The average maximum temperature is 21° in the previous month and 17° in the next month.

The average temperature in Brittany in September is 16°. The average temperature ranges is 17° in the previous month and 13° in the next month.

The average minimum temperature in Brittany in September is 12°. The minimum temperature is 13° in the previous month and 10° in the next month.

Sunshine in Brittany in September

The average day light hours per day in Brittany in September are 12.6 and there are 5.8 hours of sunshine per day on average during September making it a sunny month that is overcast at times.

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° which is cool for swimming, shorty wetsuit may help you extend your time in the water.

Rainfall in Brittany in September

The average total rainfall in Brittany in September is 0.1cm and on average there are 12.2 rainy days in September making it a slightly 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° which is comfortable for everyone. The dew point is 16° in the previous month and 13° 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 23kmh. The average maximum wind speed is 25kmh in the previous month and 25kmh in the next month.

The average wind speed in Brittany in September is typically 12kmh. The average wind speed is 13kmh in the previous month and 14kmh 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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