For Portonovo :
Warning strong breeze.
We are 90% sure of the situation, because the atmosphere might not be as stable as forecast.
Very cloudy skies with short clear spells. The risk of seeing rain will remain low. In the evening, clear periods developing.
Showers becoming less frequent. SSE force 3 in the morning freshening SW force 6 in the evening. Gusts reaching 34 knots in the evening. Smooth sea becoming smooth to slight in the evening. Low, short swell from ESE. Excellent visibility becoming excellent in the middle of the day.