Sea Temperature in Saint-Jacut-de-la-Mer in September

© Rodolphe Kubicka

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

Saint-Jacut-de-la-Mer Climate and Swimming Opportunities in September

Saint-Jacut-de-la-Mer lies within the Brittany in France. The average daytime temperature in Saint-Jacut-de-la-Mer in September is 20°C (67°F), while the nighttime average is 13°C (55°F). There are typically 10 rainy days during the month, with a total precipitation of 55 mm (2.1 inches). The daylight duration in September in Saint-Jacut-de-la-Mer is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 19 km/h (12 mph), and the humidity level is around 80%.

The water temperature in Saint-Jacut-de-la-Mer 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 18°C (64°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-Jacut-de-la-Mer for September is 18°C (64°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Frequently Asked Questions About Water Temperatures in September in Saint-Jacut-de-la-Mer