We're thinking of a week or 10 days in the Luberon April or May 2013. In terms of weather, which might be better? We realize that it depends on what we want to visit. In our case, markets-e.g. L'Isle -sur-la-Sorgue; villages--e.g. Bonnieux, Roussilon, Lourmarin; the Pont du Gard; the Chateauneuf du Pape wineries; etc. Any suggestions on how we might structure the visit to get the best weather much appreciated.