For Kostersten :
No gale warning.
The reliability of the situation is good.
Overcast skies. Rain getting heavier during the afternoon. In the evening, overcast skies.
Spells of light rain during the night. E wind force 3 continuing all day. Gusts reaching 20 knots in the middle of the day. Smooth to slight sea. Low, short swell from SSW. Poor visibility becoming excellent in the middle of the day.