Is it normal in Japan to wear short skirts even when its snowing?
japanese snow isn't as cold as european or north american snow. different climate, you see. melting point is higher too.
Funny. But honestly though, do the students not have pants or something to change into after school lets out? Or do they just suffer all winter long.. I want to believe this trope is just manga artists being lazy/too dependent on that zettai ryouiki to sell their material.
I once had this question myself and I asked a japanese friend and she said they actually wear skirts in winter, now if I were them I would be freezing :S