Sea Temperature in Billiers in September

© Guerin Philippe

Complete information on the sea temperature range in the Bay of Biscay in Billiers in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Billiers. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Billiers Climate and Swimming Opportunities in September

Billiers lies within the Brittany in France. The average daytime temperature in Billiers in September is 22°C (71°F), while the nighttime average is 13°C (56°F). There are typically nine rainy days during the month, with a total precipitation of 59 mm (2.3 inches). The daylight duration in September in Billiers is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 16 km/h (10 mph), and the humidity level is around 80%.

The water temperature in Billiers in September ranges from 16°C to 18°C (61°F to 64°F). At the beginning of the month, the average temperature is around 18°C (64°F), shifting to 17°C (63°F) by mid-September and reaching 17°C (63°F) in the last ten days. Overall, the average sea temperature in Billiers for September is 18°C (64°F). Very comfortable swimming conditions. The water is fresh but not too cold, and the air temperature is pleasant.

Frequently Asked Questions About Water Temperatures in September in Billiers