A westerly, moderate and mostly variable flow prevails over the whole area.
For Portonovo :
Warning strong breeze offshore.
The reliability of the situation is very good.
Very cloudy skies with short clear spells. Some light rain in the morning, light showers dying away progressively in the afternoon. In the evening, overcast skies.
Light rain stopping as night falls. NW force 2 becoming WNW force 3 in the middle of the day then SW. Gusts reaching 21 knots in the middle of the day. Slight sea. Low, fairly long swell from W. Good visibility becoming excellent in the middle of the day.