The temperatures in Katwijk in September are usually low and can range between 12°C and 19°C.
You can expect about 3 to 8 days of rain in Katwijk during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Katwijk in September 2026.
If you’re planning to visit Katwijk in the near future, we highly recommend that you review the 14 day weather forecast for Katwijk before you arrive.
Temperatures
19° / 12°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
61
mm
Sun Hours
9.6
Hrs
