A northwesterly, strong and very variable flow prevails over the whole area.
For Hel, Chalupy :
No gale warning.
The reliability of the situation is very good.
Cloudy spells, sometimes dense. No precipitation. In the evening, skies with few clouds.
W force 4 in the middle of the day becoming WSW force 3 in the evening. Gusts reaching 22 knots in the middle of the day. Smooth to slight sea. Low, short swell from NNW. Excellent visibility.