A southwesterly, strong and very variable flow prevails over the whole area.
For Saint-Jean-de-Monts :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Fog developing into low cloud during the morning, very cloudy in the afternoon. No precipitation. In the evening, very cloudy.
No precipitation. S wind force 3 continuing all day. Gusts reaching 15 knots from the middle of the day. Moderate sea becoming slight in the middle of the day. Moderate, long swell from WSW then low in the middle of the day then, fairly long swell from WSW. Visibility reduced by fog becoming good in the middle of the day then reduced by mist.