Mayors from fire-ravaged areas of New South Wales have said there is no doubt in their minds that the devastating blazes tearing through their communities are a result of climate change.

Key points: Coalition politicians have criticised people for linking deadly bushfires and climate change

Coalition politicians have criticised people for linking deadly bushfires and climate change Mayors from fire-ravaged NSW have hit back at that, saying climate change is contributing to fires

Mayors from fire-ravaged NSW have hit back at that, saying climate change is contributing to fires Glen Innes mayor Carol Sparks says politicians need to believe the scientific evidence on climate change

Their comments are a rebuke to senior leaders within the state and federal governments, including Prime Minister Scott Morrison and Deputy PM Michael McCormack, who have criticised people for linking the current deadly bushfires to climate change.

Three people died in fires across the state at the weekend, with the State Government declaring a state of emergency amid predicted catastrophic conditions and predictions that the coming days will see "the most dangerous bushfire week this nation has ever seen".

"What people need now is a little bit of sympathy and understanding and real assistance, they need help, they need shelter," Mr McCormack said on ABC Radio National this morning.

"They don't need the ravings of some pure enlightened and woke capital city greenies at this time when they are trying to save their homes."

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 2 minutes 19 seconds 2 m 19 s Firefighters drive through the middle of the Hillville bushfire near Taree, on the NSW mid-north coast, on Friday.

Carol Sparks, the Mayor of Glen Innes, where two people died at the weekend, called on Mr McCormack to refer to scientific evidence before commenting further.

"I think that Michael McCormack needs to read the science, and that is what I am going by, is the science," she said.

"It is not a political thing — it is a scientific fact that we are going through climate change."

Responding directly to the comments made by the Deputy PM this morning, Mid Coast mayor Claire Pontin said she felt "cranky" when she heard Mr McCormack say that "we've had fires in Australia since time began".

"They need to get out and have a real look at what's happening to this country," Ms Pontin said.

"We've not had situations like that. Fifty years ago, this would never happen."

Ms Pontin said the issue went beyond politics and said it was essential to talk about climate change when considering how to respond to the bushfires.

"We don't have capital city greenies around here, we have farmers coming to us and saying, "look what's happened to my farm, I can't afford to feed the cows anymore because I've been buying feed for the last 18 months," she said.

"It's just ridiculous.

"It's not going to go away if we bury our heads in the sand."

The Bureau of Meteorology has said that "climate change is influencing the frequency and severity of dangerous bushfire conditions in Australia".

Federal Greens MP Adam Bandt said the weekend fires demonstrated that "the Government does not have the climate emergency under control".

"Scott Morrison has done everything in his power to increase the risk of catastrophic bushfires and sadly we are now witnessing apocalyptic scenes that none of us — none of us —want to see in Australia," he said.

But Mr McCormack accused the Greens of exploiting the issue to score a "political point".

"That's what Adam Bandt, and the Greens, and Richard Di Natale, and all those other inner-city raving lunatics — and quite frankly, that's how he was carrying on yesterday — that's what they want, we're not going to go down that path."

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 7 minutes 4 seconds 7 m Michael McCormack dismissed concerns about climate change as political point scoring on RN Breakfast.

'We've got to start doing something now'

Former NSW Fire and Rescue chief Greg Mullins has been trying to set up a meeting with the Prime Minister and his team to address the bushfire emergency.

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Mr Mullins and 22 other former emergency chiefs wrote a letter to Mr Morrison earlier this year predicting a bushfire crisis and calling the Prime Minister to the table to come with an action plan. The meeting has not been held.

"The numbers don't lie, and the science is clear," he wrote in an opinion piece in the Sydney Morning Herald.

"Unprecedented dryness; reductions in long-term rainfall; low humidity; high temperatures; wind velocities; fire danger indices; fire spread and ferocity; instances of pyro-convective fires (fire storms — making their own weather); early starts and late finishes to bushfire seasons. An established long-term trend driven by a warming, drying climate," he wrote.

Mr Mullins cited previous examples when federal politicians shut down the climate change discussion saying it was inappropriate while fires are still burning. "But if not now, then when?" he asked.

NSW Deputy Premier John Barilaro is another politician who has said now is not the time, lashing out at people for raising the issue of climate change.

"For any bloody greenie, lefty out there that wants to talk about climate change when communities are at risk — and over the next 48 hours we may lose more lives — and if this is the time that people talk about climate change they are a bloody disgrace," he said.

Fires also burned across Queensland at the weekend, such as this one near Yeppoon. ( Facebook: Anthony Carter )

But Ms Pontin dismissed that.

"It's always the time to be talking about it," she said.

"Every level of government needs to recognise that there is a big issue and it's almost too late to act, but we've got to start doing something now."