When Does Halloween Horror Nights Start At Universal Studios 2024. Halloween horror nights 33 is set to begin friday, august 30th at universal studios florida. This year, halloween horror nights will run select nights from august 30th through november 3rd.

For universal hollywood, hhn starts at 7:00 p.m. This is where the creative mastermind starts discussing the gory details ahead of the event kicking off on thursday — september 5, 2024.