For Stêr-Ouen :
Warning strong breeze.
The reliability of the situation is assessed at 80%.
Very cloudy skies to overcast. Drizzle followed by showers. In the evening, good clear periods but lots of cloud, too.
Possibility of showers S force 7 in the middle of the day weakening force 5 in the evening. Gusts reaching 48 knots in the middle of the day. Rough to very rough sea becoming rough in the evening. Moderate, fairly long swell from WSW. Visibility reduced by mist becoming excellent in the evening.