Guests have paid $130 each to hear British climate sceptic Lord Christopher Monckton, described as "from the fringe" by Australian climate change sceptic Senator Barnaby Joyce.

The controversial Lord Monckton has said he came to Australia to prove Prime Minister Kevin Rudd wrong on climate change.

Two leading Australian climate change sceptics and an environmental journalist, who will offer an opposing view, will also speak.

All guests who spoke to brisbanetimes.com.au on their way into the luncheon, which started at 12 noon at the Hilton Hotel, said they vehemently disagreed that the world was warming.

William Fox said he and his wife Carmel had come to hear Lord Monckton in person, because they believed the Briton was right about climate change.

"We read so much of Lord Monckton and he sounds as though he's done much study on the subject and I thought it would enlighten my wife and I to hear him first-hand and if there's a debate on, we'll enjoy the debate," he said.

"I find [climate change] questionable. I suppose you'd say I'm a sceptic, I'm very careful with it."

Llyn Crawford, from Tarragindi, believed the idea of climate change had been hyped up and she had not seen any change in the weather in 42 years of living in Queensland.

"I read everything I can lay my hands on and I feel the media has exaggerated to a great extent to a point of frightening people," she said.

"There's lots of evidence climate change is cyclical - it's happened in the past.

"I believe whatever we do won't make all that difference to the climate or planet Earth."

Ruth Bennett said she agreed that the public had been led on.

The Canadian migrant, who now lives in Brisbane's CBD, had been devastated by stories such as Peter Spencer's hunger strike.

"I do believe we have scared a whole generation for no good reason," she said.