A southerly, very strong and variable flow prevails over the whole area.
For Katwijk aan Zee :
Warning moderate gale offshore.
The reliability of the situation is assessed at 95%.
Very cloudy. No precipitation. In the evening, clear periods developing.
No precipitation. S wind force 4 from the middle of the day. Gusts reaching 22 knots in the evening. Slight sea. Low, short swell from WSW. Excellent visibility.