A westerly, very strong and particularly variable flow prevails over the whole area.
For Tréguier :
No gale warning.
We are 85% sure of the situation, because flows might be far more disturbed than forecast.
Skies very cloudy to overcast in the morning, cloud largely disappearing in the afternoon. No precipitation. In the evening, skies with few clouds.
W force 3 becoming WNW force 4 in the middle of the day then NW force 3. Gusts reaching 23 knots in the middle of the day. Moderate sea becoming slight in the evening. Low, fairly long swell from WNW. Excellent visibility.