A northwesterly, very strong and very variable flow prevails over the whole area.
For Castricum, Sports at Sea :
Warning strong breeze offshore.
The reliability of the situation is assessed at 85%.
Good clear periods but cloud building. Chance of light rain. In the evening, clear periods developing.
Possibility of showers NW wind force 4 from the middle of the day. Gusts reaching 31 knots in the evening. Slight sea. Low, short swell from WNW. Excellent visibility.