A northwesterly, very strong and mostly variable flow prevails over the whole area.
For Heist :
Warning fresh gale offshore.
The reliability of the situation is assessed at 85%.
Very cloudy. But clear spells will become more and more widespread. Light rain followed by showers in the morning, light showers dying away progressively in the afternoon. In the evening, good clear periods but lots of cloud, too.
Chance of light rain. W force 6 in the morning weakening force 4 in the evening. Gusts reaching 45 knots in the morning. Moderate sea. Low, short swell from E then from NNW in the evening. Excellent visibility.