What's it like toward the end of November? My eldest daughter and her fiancé are coming over there then. They're bringing my granddaughter and the fiancé's son (aged 13 and 14, respectively). The guys are going to some kind of soccer event and the girls want to shop. They will be staying in Chelsea. They may take a side trip to France for a day just to say they were there.
Well if they pack for light rain, mild rain, heavy rain, and a full blown monsoon, they should be OK. It's the luck of the draw I'm afraid, we do have some cracking days in November, chilly to cold with unbroken sunshine. Fingers crossed they'll hit it just right.