In the interests of science and pure curiosity therefore I decided to look into what would be involved in setting off for a camping trip around Europe. The first thing one must consider is budget; nowadays everybody is very poor and therefore one must choose a location that is not only close enough to reach without extravagant cost, but one in which items necessary to a camping trip are not ridiculously overpriced.
This leaves you with a relatively limited number of options. All of the Mediterranean countries are in simply through climate, but the further east you travel the colder it gets so there is a magic cut off line around Germany. Of course in the summer months this all changes with Europe becoming one massive heatwave, but for the majority of the year you are pretty much limited to France, Spain, Portugal and Italy.