We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Warm sun all day.In the evening, clear skies. NE force 2 turning WSW force 3 in the middle of the day then WNW. Gusts reaching 17 knots from the middle of the day. Smooth sea. Low, fairly long swell from SW. Excellent visibility.
Semaphoren
Station Vannes-Sene liegt 19 km von Billiers entfernt