A southwesterly, strong and very variable flow prevails over the whole area.
For Saint-Nazaire :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Bright spells increasing during the morning, predominantly sunny in the afternoon. No precipitation. In the evening, very cloudy skies becoming totally overcast.
No precipitation. SW wind force 3 continuing all day. Gusts reaching 16 knots in the middle of the day. Smooth to slight sea. Low, fairly long swell from SW. Good visibility becoming excellent in the middle of the day then good.