Originally Posted by spaceHopper
Check the ferry prices they drop like a stone in September and it's still nice in France but I'd recommend early September as it's end of season if France and come the end of the month a lot of places are closed
As an aside, We once did a late October trip with our then young children about ten years ago to France taking the last of the last of the season's ferries home at Halloween. It was one of the nicest ever. Waking up in blue sky frosty mornings and crunching through ice in a quiet and echoing square in Monpazier. Eight year old getting to make a drawing and have it put up on the wall of the restaurant next to the original of the artist she had seen and copied it from. The Dordogne and Lascaux caves without any need to book tickets beforehand.
Halloween with trick and treaters at nightfall in Dinan. Clear and crisp weather, lovely food, tourists ( apart from us ) all gone home.
We've been to France a lot of times with the van and have traveled extensively but this remains as one of my favourite trips.
Edit: Forgot why I replied in the first place - the ferry was about one third of the summer fare..