A northerly and moderate flow prevails over the South-West of the basin. Over the North and the East, it is westerly, very strong and mostly variable.
For Royan-Pontaillac :
No gale warning.
We are 90% sure of the situation, because the atmosphere might be less unstable and showers more frequent than forecast.
Very cloudy skies to overcast. No precipitation. In the evening, good clear periods but lots of cloud, too.
No precipitation. W wind force 4 from the middle of the day. Gusts reaching 23 knots in the middle of the day. Slight sea. Low, fairly long swell from WSW. Excellent visibility.