A southeasterly, very strong and mostly variable flow prevails over the whole area.
For Pen Guen, Saint-Cast :
No gale warning.
We are 85% sure of the situation, because the high pressure system could move in more quickly than forecast.
Cloud and sun in the morning, sunny in the afternoon. No precipitation. In the evening, relatively clear skies becoming changeable.
S force 4 turning SE in the middle of the day then SSE force 5. Gusts reaching 22 knots in the evening. Moderate sea. Moderate, long swell from WNW. Excellent visibility.