A northeasterly, moderate and variable flow prevails over the whole area.
For Siouville :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Sunny despite some cloud arriving in late morning. In the evening, clear skies.
ENE wind force 3 continuing all day. Gusts reaching 18 knots in the middle of the day. Smooth sea. Low, fairly long swell from W. Poor visibility becoming excellent in the middle of the day then excellent.