A northeasterly, weak and particularly variable flow prevails over the South of the basin. Over the North, it is westerly, weak and particularly variable.
For Lancieux - Port de l"Islet :
No gale warning.
For the night from Thursday to Friday N wind force 2 continuing all night. Gusts reaching 15 knots in the early part of the night.
Smooth to slight sea becoming smooth at the end of the night. Low from N. Excellent visibility becoming good in the middle of the night then good. Daytime of Friday 21 august : The sky will remain changeable.
Good clear periods alternating with cloudy spells, rather dense in the morning. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, cloudy spells, sometimes dense.
Chance of light rain. N force 2 in the morning becoming NNW force 3 in the middle of the day. Gusts reaching 15 knots in the evening. Smooth sea becoming smooth to slight in the evening. Low from N. Poor visibility becoming excellent in the middle of the day.