I did some cooking in the nude, the damn heater wasn't going and was about 13 C inside. But it didn't seem to bother me and it took me about 45 minutes to cook the food and still stayed nude afterwards and cleanup as well. Seems my body can tolerate cool temperatures at least some of the time. Perhaps I should try t-shirt in winter.
I was at a nudist beach it was top of 18 C and sunny with a nice breeze and its winter where I am. There was this old guy who approached me and asked if I was cold and said "nah". Winter doesn't stop me from being a nudist as I don't tend to mourn over the loss of warmer days.