A northerly flow prevails over the South-West of the basin. Over the South-East, it is easterly, weak and mostly variable. Over the North, it is westerly, strong and mostly variable.
For La Tranche-sur-Mer :
No gale warning.
We are 90% sure of the situation, because the cloud system may be more intense than predicted.
Skies with few clouds. In the evening, skies with few clouds.
W wind force 5 from the middle of the day. Gusts reaching 23 knots in the evening. Smooth to slight sea. Low, fairly long swell from WSW. Excellent visibility.