A southeasterly, very strong and mostly variable flow prevails over the whole area.
For Hel, Chalupy :
Warning moderate gale offshore.
The reliability of the situation is very good.
Fair weather with mostly clear skies. In the evening, skies with few clouds.
SSE force 3 becoming SE force 4 in the middle of the day then SSE. Gusts reaching 23 knots in the evening. Smooth to slight sea becoming slight in the middle of the day. Low, short swell from E. Good visibility becoming excellent in the middle of the day.