Firefighters have contained a blaze that has burnt about 12 per cent of the world heritage-listed Fraser Island in the past fortnight.

The fire has burnt about 20,000 hectares on the southern end of the island, in south-east Queensland, and at one stage threatened Dilli Village.

Queensland Parks and Wildlife Service regional manager Rob Allan says about 40 firefighters have been battling the blaze.

"Day and night really it's been fairly full on trying to contain this quite large fire," he said.

"It is contained. Still a fair bit of smoke around but no flame any more but it's very fickle weather, very volatile conditions, so we're watching it pretty closely."

"Damage is a sort of interesting word because wildfire is quite good ecologically provided it doesn't get too intense and burn too hot.

"I mean ... it's clear there are some places have burned very hot indeed and that can be damaging to obviously flora and fauna but by and large doesn't look too bad."

Fire bans extended

Meanwhile, fire bans have been extended in Queensland's northern and central regions.

Queensland Emergency Services Minister Neil Roberts says high to severe fire conditions have spread to 11 new local government areas.

"Conditions have eased in the south-east part of the state and indeed the southern part of the state," he said.

"However, the fire service is expecting ... high to severe conditions to continue in the north and central areas until next Monday the 12th of October."

Areas affected include Banana, Gladstone, Rockhampton, Central Highlands, Woorabinda, Isaac and Mackay.

The ban also affects Hinchinbrook, Townsville, Whitsunday, Burdekin, Charters Towers, Flinders and Richmond.