For La Tranche-sur-Mer :
No gale warning.
The reliability of the situation is assessed at 90%.
Sunny becoming changeable in the afternoon. No precipitation. In the evening, good clear periods but cloud building.
No precipitation. SSE force 3 in the morning turning W force 4 in the middle of the day. Gusts reaching 18 knots in the middle of the day. Smooth sea becoming smooth to slight in the middle of the day. Low, short swell from WSW. Excellent visibility.