Sea Temperature in Saint-Hilaire-de-Riez in September

© Gaby Richard

Complete information on the sea temperature range in the Atlantic Ocean in Saint-Hilaire-de-Riez in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Saint-Hilaire-de-Riez. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Saint-Hilaire-de-Riez Climate and Swimming Opportunities in September

Saint-Hilaire-de-Riez lies within the Pays de la Loire in France. The average daytime temperature in Saint-Hilaire-de-Riez 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 57 mm (2.2 inches). The daylight duration in September in Saint-Hilaire-de-Riez 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-Hilaire-de-Riez in September ranges from 17°C to 19°C (63°F to 66°F). At the beginning of the month, the average temperature is around 19°C (66°F), shifting to 18°C (64°F) by mid-September and reaching 18°C (64°F) in the last ten days. Overall, the average sea temperature in Saint-Hilaire-de-Riez 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 Saint-Hilaire-de-Riez