I would also maybe think its a good idea to see if there's anyone local who can take a look out of their window.
A forecast is a forecast,not an actual, and in the summer is usually pessimistic on purpose to keep yachtmen safe.... Cambermet is an actual,but way out of the area we normally row in. Chimet is irrelevant unless its round the Island day.
Having just got back from walking the dogs I can confirm its dry, if gloomy, and there's hardly any wind. F2 maybe ?
With a southerly the island ( Hayling ) creates a vast wind shadow....several people live in the High St, several at Emsworth, and I'm at Northney...
Don't post phone numbers on this forum as its public.