A westerly, moderate and very variable flow prevails over the whole area.
For Piriac-sur-Mer :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Overcast skies clearing completely in the morning, changeable skies becoming relatively cloud-free in the afternoon. No precipitation. In the evening, relatively clear skies becoming changeable.
SE force 2 turning WNW force 3 in the middle of the day then becoming force 4. Gusts reaching 17 knots in the evening. Slight sea. Low, fairly long swell from WSW. Good visibility becoming excellent in the middle of the day.