Castricum Weather in September

Castricum in September sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 14°C (57°F). Rainfall is fairly high this month at around 103 mm (4.1 in), so pack a rain jacket to stay dry.

Rainfall in Castricum in September

The climate data from previous years indicates about 16 days of rain, averaging 103 mm (4.1 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Castricum in September

Castricum in September gets highs of 19°C (66°F) during the day and drops to 14°C (57°F) at night. Experience the summer season in September. Conditions are often most pleasant around the middle of the day. With lows of 14°C (57°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Average water temperature in September

With water at 18°C (64°F), swimming is comfortable for most people. It feels refreshing rather than cold, though it depends a bit on personal preference.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July typically offers the best weather for Castricum.