A westerly, strong and mostly variable flow prevails over the whole area.
For Bretignolles-sur-Mer :
Warning fresh gale offshore.
The reliability of the situation is assessed at 85%.
Overcast skies with storms likely in the morning, very cloudy with possibility of thunder storms in the afternoon. Possibility of showers late in the morning, showers with possibility of hail in the afternoon. In the evening, cloudy spells, sometimes dense.
Chance of light rain. SSW force 6 in the morning turning WSW force 5 in the evening. Gusts reaching 39 knots in the middle of the day. Moderate sea temporarily rough in the middle of the day. Low, fairly long swell from WSW then moderate in the evening. Excellent visibility.