When Does Grinchmas Start At Universal 2024. Christmas at universal studios hollywood begins friday, november 29th for both the wizarding world of harry potter and grinchmas and runs daily through january 6th, 2024. This year, you’ll find holiday fun at universal from friday, november 29, 2024 to monday, january 6, 2025.

Universal orlando begins decorating for christmas in islands of adventure at the end of october. This year, grinchmas is happening from november 22, 2024 through december 31, 2024.