A southwesterly, strong and very variable flow prevails over the whole area.
For Portonovo :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Overcast in the morning, increasing sunny spells in the afternoon. Some light rain in the morning, possibility of showers in the afternoon. In the evening, skies with few clouds.
SSW force 4 in the morning becoming SW force 3 in the middle of the day. Gusts reaching 23 knots in the morning. Smooth to slight sea. Low, fairly long swell from W. Good visibility becoming excellent in the middle of the day then poor.