A westerly, strong and very variable flow prevails over the whole area.
For Sylt, Sansibar :
Warning moderate gale offshore.
The reliability of the situation is assessed at 80%.
In the evening, cloudy spells, sometimes dense.
Light showers. W wind force 7. Gusts reaching 44 knots in the evening. Moderate sea. Low, fairly long swell from WSW. Excellent visibility.