Firefighters are waiting for a break in the weather so they can battle a large bushfire that has forced campers to leave North Stradbroke Island near Brisbane.

Wind conditions are expected to improve early tomorrow morning and firefighters are waiting until then to tackle the blaze.

About 900 holidaymakers who were in the path of the fire were today evacuated from the island.

A predicted hot weather change in the coming days prompted authorities to take action.

As it is peak holiday season on the island, there was no room for the campers to go elsewhere, so they had no choice but to leave.

The blaze, which was sparked by a lightning strike at the weekend, is expected to move into the popular Main Beach area this evening.

Authorities are hoping to evacuate about 900 campers from Main Beach ahead of a bushfire. ( ABC News: Courtney Wilson )

A large volume of smoke hung over the island's township of Dunwich on Wednesday, but police said there was no threat from the bushfire to properties.

Smoke also drifted as far as Brisbane, creating a haze in the city's CBD.

Island camper Sue Redding said her group had been watching the fire and waiting for the evacuation order.

"You're sort of cautious when you're sitting... it's just so fast it can just take off," she said.

Camper Bob Stephenson said he was not too upset about being forced to leave.

"It's a feeling of resignation, as I said, the law have told us to get out, so we just get out, there's no problem," he said.

Queensland Fire and Rescue spokesman Kevin Walsh said the evacuation was coordinated with the tide.

Campers have been taking barges from the town of Dunwich back to the mainland. ( ABC News: Courtney Wilson )

"There's a long window and a big opportunity for people to progressively move out during the day," he said.

"We'll be receiving northerly winds... which will push that fire towards this area of the beach."

Police advised campers to tell authorities when they had left Main Beach.

"Please head to the Dunwich Community Hall on the corner of Ballow Road and Junner Street," police said in a statement.

"The objective is to have North Stradbroke Island, south of the causeway, clear of people by 4pm.

"[The causeway] will remain closed until the threat of fire has been reduced."