Sea Temperature in Saint-Denis-d'Oleron in September

© Christophe Blanc

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

Saint-Denis-d'Oleron Climate and Swimming Opportunities in September

Saint-Denis-d'Oleron lies within the Nouvelle-Aquitaine in France. The average daytime temperature in Saint-Denis-d'Oleron in September is 22°C (71°F), while the nighttime average is 14°C (57°F). There are typically nine rainy days during the month, with a total precipitation of 58 mm (2.3 inches). The daylight duration in September in Saint-Denis-d'Oleron is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 17 km/h (11 mph), and the humidity level is around 78%.

The water temperature in Saint-Denis-d'Oleron in September ranges from 18°C to 20°C (64°F to 68°F). At the beginning of the month, the average temperature is around 20°C (68°F), shifting to 19°C (66°F) by mid-September and reaching 19°C (66°F) in the last ten days. Overall, the average sea temperature in Saint-Denis-d'Oleron for September is 19°C (66°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 Saint-Denis-d'Oleron