For Kostersten :
No gale warning.
The reliability of the situation is good.
Fairly clear skies progressively clouding over in the morning, very cloudy skies to overcast in the afternoon. Some light showers in the morning, light rain gradually becoming less frequent in the afternoon. In the evening, good clear periods but cloud building.
No precipitation. W force 1 freshening SW force 3 in the middle of the day then becoming SSE. Gusts reaching 21 knots in the middle of the day. Slight sea. Low, short swell from SSW. Good visibility becoming excellent in the middle of the day then good.