For La Tranche-sur-Mer :
No gale warning.
The reliability of the situation is assessed at 75%.
Very cloudy. No precipitation. In the evening, good clear periods but cloud building.
Light showers. ENE force 3 in the middle of the day becoming NE force 4 in the evening. Gusts reaching 19 knots in the evening. Smooth to slight sea becoming slight in the evening. Low, fairly long swell from W. Excellent visibility.