Avoid what? School holidays? I would agree if you use a lot of campsites but we like to do long summer trips so avoiding the school holidays is pretty much impossible especially if you want the best of the weather. France I think is the best country to be in during school holidays as firstly its massive, secondly its got thousands of Aires which are generally not magnets for kids or families and they always seem to have loads going on of interest in the peak seasons. Its dead easy with a motorhome to get away from it all when you have had enough as well. I find for our sort of motorhoming which is generally on Aires and wilding it gets busier in the second week of September. There is kind of lull the last week of August and first week of September when those restricted to school holidays disappear and before the September brigade start to turf up. We were away from June to October this year and September seemed to be the busiest month. Weather was awful as well.