A southwesterly, very strong and very variable flow prevails over the whole area.
For Plage de Postolonnec :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Very cloudy skies with short clear spells. The risk of seeing rain will remain low. In the evening, cloud and long sunny periods.
No precipitation. S force 3 in the morning turning SW in the middle of the day. Gusts reaching 17 knots in the middle of the day. Smooth to slight sea. Low, fairly long swell from SW. Visibility reduced by fog becoming good in the middle of the day then reduced by mist.