A southwesterly, moderate and very variable flow prevails over the whole area.
For Piriac-sur-Mer :
No gale warning.
We are 85% sure of the situation, because the high pressure system could move in more quickly than forecast.
Cloud and sun in the morning, sunny in the afternoon. Some showers in the morning, no precipitation in the afternoon. In the evening, light cloudy spells.
WNW force 2 turning WSW force 3 in the middle of the day then becoming force 4. Gusts reaching 18 knots in the evening. Slight sea. Low, fairly long swell from W. Good visibility becoming excellent in the middle of the day.