For La Tranche-sur-Mer :
No gale warning.
We are 90% 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. No precipitation. In the evening, clear skies.
NNW force 3 freshening WNW force 5 in the middle of the day then becoming NW. Gusts reaching 28 knots from the middle of the day. Slight sea. Low, fairly long swell from WSW. Excellent visibility.