For Batz-sur-Mer :
No gale warning.
We are 75% sure of the situation, because the high pressure system could move in more quickly than forecast.
Warm sun all day. In the evening, skies with few clouds.
WNW force 2 turning WSW force 3 in the middle of the day then WNW force 4. Gusts reaching 18 knots in the evening. Smooth sea becoming smooth to slight in the evening. Low, short swell from WSW. Excellent visibility becoming excellent in the middle of the day.