It's Punky Brewster "Christmas in July" S01E05 1985

Christmas in July: S01E05 It is summer, and Punky is eyeing a skateboard. She has Glomer take everyone to Santa's workshop, but she causes an accident which causes it to snow all over the world! Glomer must track down Santa, who is vacationing on a tropical island, and get him to set things right. Since his elves are also on vacation, Punky is conscripted to help him, and she learns how hard he works.