High 1028 hPa centered on the Celtic Sea remaining almost stationary.
For Plage de Riez :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Predominantly sunny in the morning, skies clouding over with storms forming in the afternoon. No precipitation. In the evening, good clear periods but cloud building.
Chance of light rain. E force 2 turning S force 3 in the middle of the day then NE force 2. Gusts reaching 14 knots in the middle of the day. Smooth to slight sea. Low, fairly long swell from WSW. Good visibility becoming excellent in the middle of the day then good.