A westerly, weak and particularly variable flow prevails over the whole area.
For Bréhat :
No gale warning.
For the night from Wednesday to Thursday WNW wind force 3 continuing all night. Gusts reaching 16 knots in the early part of the night.
Smooth to slight sea becoming slight in the middle of the night. Low, short swell from NW then from NE in the middle of the night then from NE. Excellent visibility becoming good in the middle of the night then good. Daytime of Thursday 20 august : The unstable weather will die away during the day.
Good clear periods alternating with cloudy spells, sometimes dense. Some light showers in the morning, possibility of showers in the afternoon. In the evening, cloud and long sunny periods.
Chance of light rain. WNW force 3 turning NNW force 4 in the middle of the day then NW. Gusts reaching 16 knots in the evening. Slight sea. Low from N. Poor visibility becoming excellent in the middle of the day.