High 1028 hPa centered on the Celtic Sea remaining almost stationary.
For Tregastel :
No gale warning.
We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.
Skies changeable becoming cloudier in late morning. No precipitation in the morning, showers late in the day. In the evening, very cloudy skies becoming totally overcast.
Showers. ENE force 3 in the morning becoming force 4 in the middle of the day. Gusts reaching 22 knots in the evening. Slight sea. Low, fairly long swell from WNW. Excellent visibility.