I think this movie is from the 90's not sure though. It was about someone going to an island to look for somebody, on the island there was creatures of some sort not sure exactly what. I know they climbed a tower while getting chased but can't remember much else. Don't expect much help as it's quite vague but I'm desperate.

It's not The Island of Dr. Moreau or Congo

This one?

The Island of Dr. Moreau (1996) - IMDb

As I said in my post it's NOT The Island of Dr. Moreau

Sorry. In my eagerness, I missed your note at the bottom of your post. This is one for Quinn F to solve. I am clueless.

How about Bleeders?
YouTube

Nope

Nobody got anymore ideas then?

It sounds like Wrong Turn... but I don't think they are on an island

I'll give you another suggestion to mark off the list~unless I'm lucky enough to get the right one:

Primal Force (1999 TV movie)
IMDb review (edited):
A small charter plane has crashed on a banned and supposedly lifeless island, stranding the pilot, a real estate broker and a wealthy young woman. The rescue team put together to go in, unable to contract a professional adviser, as all believe the isle is cursed, are forced to hire the only guide available; a drunken, ill-tempered recluse, who's spent the last decade attempting to running from the memories of animal experimentation gone horribly wrong. Now, with the recovery crew, he will be going into his nightmare, and it is viciously wide awake.

When they get to the research outpost for shelter, there is a tower that they can transmit from. The end of the movie is focused on the structure and its secrets (genetically enhanced baboons that were bred for specialty hunting), but especially that tower.

Primal Force (TV Movie 1999) - IMDb