A southerly, very strong and very variable flow prevails over the East of the basin. Over the West, it is westerly, very strong and very variable.
For Portland Marina :
Warning moderate gale offshore.
The reliability of the situation is good.
In the evening, cloudy spells, sometimes dense.
Light showers progressively becoming less frequent. W wind force 6. Gusts reaching 33 knots in the evening. Moderate sea. Moderate, fairly long swell from SW. Good visibility.