Chris, please keep cool, or better, keep warm, lol. If you mean Algarve at the end of May/June, the only risk I can talk about is fire… but, to be true, there’s only a few, very few part of the forest to burn, as the last two years where like hell. I think you heard about it.
Talking about snow, from time to time there is a mountain that separates Algarve from the rest of the country that dresses in white, even in late Spring. Even so, the only risk I can imagine is a forum administrator peacefully taking a sea bath with the sight of a white mountain behind, under a shining sun, while a poor forum user works like a dog (who is risking is the forum user, of course).