Low 977 hPa centered on the South of the Irish Sea moving at 13 knots to the South and rising to 986 hPa to be centered on the Celtic Sea.
For Plage de Jullouville :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Overcast in the morning, increasing sunny spells in the afternoon. Some light rain in the morning, light showers dying away progressively in the afternoon. In the evening, relatively clear skies becoming changeable.
SSE force 3 turning SW in the middle of the day then W force 2. Gusts reaching 16 knots in the morning. Smooth to slight sea. Low, fairly long swell from W. Good visibility becoming excellent in the middle of the day then good.