A westerly and particularly variable flow prevails over the whole area.
For Mevagissey :
No gale warning.
For the night from Thursday to Friday W wind force 3 continuing all night. Gusts reaching 21 knots in the early part of the night.
Smooth to slight sea. Low, short swell from SW. Excellent visibility becoming excellent in the middle of the night then excellent. Daytime of Friday 19 september : The atmosphere will remain unstable.
Skies changeable to very cloudy. Light showers all day. In the evening, cloudy spells, sometimes dense.
Light showers. WSW force 3 in the morning temporarily W force 4 in the middle of the day. Gusts reaching 21 knots until the middle of the day. Slight sea becoming moderate in the middle of the day. Low, short swell from WSW. Excellent visibility becoming excellent in the middle of the day.