The temperatures in Knokke Heist in September are usually low and can range between 13°C and 19°C.
You can expect about 3 to 8 days of rain in Knokke Heist 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 Knokke Heist in September 2026.
If you’re planning to visit Knokke Heist in the near future, we highly recommend that you review the 14 day weather forecast for Knokke Heist before you arrive.
Temperatures
19° / 13°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
79
mm
Sun Hours
9.8
Hrs
