A northerly and variable flow prevails over the South and the East of the basin. Over the North-West, it is southerly, weak and variable.
For La Tranche-sur-Mer :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
In the evening, clear spells, risk of mist forming.
No precipitation. W wind force 2. Gusts reaching 10 knots in the evening. Smooth to slight sea. Low, fairly long swell from WSW. Visibility reduced by mist.