Skies progressively clouding over with storms forming.Risk of showers in the early hours.In the evening, overcast skies with risk of thundery outbreaks. Light showers progressively becoming less frequent. WSW force 4 in the middle of the day becoming force 3 in the evening. Gusts reaching 25 knots in the middle of the day. Slight sea. Low, short swell from S. Excellent visibility becoming reduced by mist in the evening.