Fill yer boots
http://www.google.co.uk/search?q=al...s=org.mozilla:en-GB:official&client=firefox-a
As the Alps stretch from SE France to the NE corner of Italy, across the bottom of Germany, Switzerland and Austria and beyond in a massive wall, the weather through the month of May will be, shall we, say, "Al rightish" but difficult to predict with absolute certainty. Fine one minute, loshing it down the next.
Do you camp in the UK in May? If so, it'll be fine down in the valleys. Want to camp above 2000m? Then I guess you know what you are doing anyway.
Check with the local tourist offices as to when the camp sites are open.
Try
http://www.wunderground.com/global/UK.html for historical data.
Will you be happy if we all just say,
IT WILL BE FINE
If so, there you go. It will be fine.... and, you know what? It probably will be.

If it isn't, stop in a hotel or come home, as you will not be able to sue anybody.
