A northeasterly and variable flow prevails over the whole area.
For Pornichet :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Fairly cloudless skies becoming changeable during the morning, sunny despite some high cloud in the afternoon. No precipitation. In the evening, clear skies.
NE wind force 3 continuing all day. Gusts reaching 17 knots in the middle of the day. Slight sea. Low, fairly long swell from WSW. Good visibility becoming excellent in the middle of the day then good.