A northeasterly, weak and very variable flow prevails over the East of the basin. Over the West, it is southerly, strong and very variable.
For Pornichet :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Skies very cloudy to overcast in the morning, very cloudy in the afternoon. Drizzle beginning to fall in late morning, light showers dying away progressively in the afternoon. In the evening, clear periods developing.
Possibility of showers NE force 3 in the morning becoming force 2 in the evening. Gusts reaching 14 knots in the morning. Slight sea. Low, fairly long swell from W. Visibility reduced by mist becoming good in the middle of the day then reduced by mist.