Sea Temperature in Dannes in September

© Hervé THEVENIN

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

Dannes Climate and Swimming Opportunities in September

Dannes lies within the Hauts-de-France in France. The average daytime temperature in Dannes in September is 20°C (68°F), while the nighttime average is 13°C (55°F). There are typically 10 rainy days during the month, with a total precipitation of 54 mm (2.1 inches). The daylight duration in September in Dannes is 12 hours, with an average of 5 hours of sunshine per day. The average wind speed in September is 19 km/h (12 mph), and the humidity level is around 82%.

The water temperature in Dannes in September ranges from 17°C to 18°C (63°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 Dannes 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 Dannes