A southerly, weak and mostly variable flow prevails over the South-East of the basin. Over the West and the North, it is westerly, moderate and mostly variable.
For La Tranche-sur-Mer :
No gale warning.
We are 90% sure of the situation, because the atmosphere might not be as stable as forecast.
Skies changeable to very cloudy. No precipitation. In the evening, good clear periods but lots of cloud, too.
No precipitation. WSW wind force 4 continuing all day. Gusts reaching 20 knots in the middle of the day. Slight sea. Low, short swell from WSW. Excellent visibility.