A northerly, weak and variable flow prevails over the East of the basin. Over the North-West, it is southeasterly, very strong and very variable. Over the South-West, it is southwesterly, moderate and very variable.
For Hel, Chalupy :
No gale warning.
The reliability of the situation is very good.
Dense, persistent fog. No precipitation. In the evening, low cloud developing into fog.
No precipitation. N force 3 in the middle of the day turning NW in the evening. Gusts reaching 12 knots in the evening. Smooth sea. Low, short swell from NNW then from NNE in the evening. Excellent visibility becoming reduced by dense fog in the evening.