For La Tranche-sur-Mer :
No gale warning.
The reliability of the situation is assessed at 90%.
Very cloudy skies to overcast. No precipitation. In the evening, very cloudy skies to overcast.
No precipitation. WNW wind force 4 from the middle of the day. Gusts reaching 21 knots in the evening. Smooth sea becoming smooth to slight in the evening. Low, short swell from WSW. Excellent visibility.