Sea Temperature in Hourtin in September

© Ady Fry

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

Hourtin Climate and Swimming Opportunities in September

Hourtin lies within the Nouvelle-Aquitaine in France. The average daytime temperature in Hourtin in September is 23°C (74°F), while the nighttime average is 14°C (57°F). There are typically 10 rainy days during the month, with a total precipitation of 66 mm (2.6 inches). The daylight duration in September in Hourtin is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 15 km/h (9 mph), and the humidity level is around 77%.

The water temperature in Hourtin in September ranges from 18°C to 21°C (64°F to 70°F). At the beginning of the month, the average temperature is around 21°C (70°F), shifting to 20°C (68°F) by mid-September and reaching 19°C (66°F) in the last ten days. Overall, the average sea temperature in Hourtin for September is 20°C (68°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 Hourtin