We're planning a trip to France, and I would like to go mid-late September. I'm thinking we fly into Paris or Geneva, head to Chamonix for a few days of hiking, then to Provence and the Riviera for a few days of bicycle riding and sitting at the beach. I'm wondering what the ideal location would be for cycling on country roads (near lavender fields, the whole bit), as well as allowing for access to the beach. (Will it even still be toasty enough for the beach in December?) Any and all recommendations and tips are much appreciated.