Sea Temperature in Castelldefels in September

© Cynthia Soto

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

Castelldefels Climate and Swimming Opportunities in September

Castelldefels lies within the Catalonia in Spain. The average daytime temperature in Castelldefels in September is 25°C (77°F), while the nighttime average is 18°C (64°F). There are typically seven rainy days during the month, with a total precipitation of 72 mm (2.8 inches). The daylight duration in September in Castelldefels is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 12 km/h (7 mph), and the humidity level is around 72%.

The water temperature in Castelldefels in September ranges from 23°C to 25°C (73°F to 77°F). At the beginning of the month, the average temperature is around 25°C (77°F), shifting to 25°C (77°F) by mid-September and reaching 24°C (75°F) in the last ten days. Overall, the average sea temperature in Castelldefels for September is 24°C (75°F). Optimal swimming conditions. The water is warm, and the air is comfortable for drying off and sunbathing.

Frequently Asked Questions About Water Temperatures in September in Castelldefels