A southeasterly, very strong and variable flow prevails over the whole area.
For Heist :
Warning fresh gale offshore.
The reliability of the situation is assessed at 90%.
Cloudy with risk of fog in the morning, very cloudy in the afternoon. No precipitation. In the evening, overcast skies.
Drizzle in the early hours. S force 3 becoming force 4 in the middle of the day then SSE force 5. Gusts reaching 31 knots in the evening. Smooth to slight sea. Low, short swell from WNW. Visibility reduced by mist becoming good in the middle of the day then excellent.