I think the point is just about temperature. I've experienced this out on lakes in the northern US for example. It's sunny but not like a tropical beach, and maybe even a little chilly. But you'll definitely get burnt without sunscreen
People who are new to skiing/snowboarding are often surprised that their faces get sunburned, because of course it's cold and so how could they get burned
People who are new to skiing/snowboarding are often surprised that their faces get sunburned, because of course it's cold and so how could they get burned