Sea Temperature in Sainte-Marie-de-Ré in September

© Rudy Gossin

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

Sainte-Marie-de-Ré Climate and Swimming Opportunities in September

Sainte-Marie-de-Ré lies within the Nouvelle-Aquitaine in France. The average daytime temperature in Sainte-Marie-de-Ré 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 Sainte-Marie-de-Ré 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 Sainte-Marie-de-Ré 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 18°C (64°F) in the last ten days. Overall, the average sea temperature in Sainte-Marie-de-Ré 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 Sainte-Marie-de-Ré