For Portonovo :
No gale warning.
We are 75% sure of the situation, because the high pressure system could move in more quickly than forecast.
Sunny despite some cloud arriving in late morning. In the evening, changeable skies clearing completely.
No precipitation. SSE force 3 becoming SE force 4 in the middle of the day then SSE. Gusts reaching 25 knots in the evening. Rippled sea becoming smooth to slight in the middle of the day. Low, short swell from ESE. Excellent visibility.