For La Tranche-sur-Mer :
No gale warning.
The reliability of the situation is assessed at 70%.
Very cloudy skies to overcast. Chance of light rain. In the evening, very cloudy.
No precipitation. ESE force 2 in the middle of the day freshening SSW force 4 in the evening. Gusts reaching 19 knots in the evening. Smooth to slight sea. Low, fairly long swell from WSW. Excellent visibility becoming excellent in the evening.