Sea Temperature in Castricum aan Zee in September

© Najm AL-Youssef

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

Castricum aan Zee Climate and Swimming Opportunities in September

Castricum aan Zee lies within the North Holland in Netherlands. The average daytime temperature in Castricum aan Zee in September is 19°C (65°F), while the nighttime average is 11°C (52°F). There are typically 13 rainy days during the month, with a total precipitation of 85 mm (3.3 inches). The daylight duration in September in Castricum aan Zee is 13 hours, with an average of 5 hours of sunshine per day. The average wind speed in September is 20 km/h (12 mph), and the humidity level is around 83%.

The water temperature in Castricum aan Zee 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 Castricum aan Zee 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 Castricum aan Zee