For Mouillage de Saint-Cast :
No gale warning.
For the night from Thursday to Friday NNW wind force 2 continuing all night. Gusts reaching 13 knots in the early part of the night.
Slight sea. Low, short swell from WNW. Good visibility becoming good in the middle of the night then good. Daytime of Friday 21 august : The weather will become more uncertain during the day.
Good clear periods alternating with cloudy spells, rather dense in the morning. The risk of seeing rain will remain low. In the evening, lots of good clear periods.
No precipitation. N force 2 in the morning becoming force 3 in the middle of the day. Gusts reaching 14 knots in the evening. Slight sea. Low, short swell from WNW. Good visibility becoming excellent in the middle of the day.