The 20 year-old has only made four appearances for the Hoops to date but he is relishing the challenge of playing abroad.
"I'm settling in quite well, getting used to the weather - that's probably the biggest challenge for me," said Rogic on Fox Sports Australia.
"Just being around the players has been the biggest change for me - the quality is a step up and the tempo is something I wasn't quite used to."
Despite his limited time on the pitch this term, Celtic boss Neil Lennon believes he has signed himself a future star.
"He's tall, elegant, got really quick feet, excellent technique and an eye for the goal," he said.
"I'm very pleased because I've got myself a very good player now."