For La Tranche-sur-Mer :
No gale warning.
The reliability of the situation is assessed at 90%.
Sunny with some cloud in the afternoon. In the evening, skies with few clouds.
E wind force 4 continuing all day. Gusts reaching 17 knots in the morning. Smooth to slight sea. Low, fairly long swell from WSW. Excellent visibility becoming excellent in the middle of the day.