The fire, which has burnt about 260,000 hectares, continues to rage uncontrolled.

Firefighters are working around the clock to try to contain its spread.

This has prompted many Illawarra residents to dig deep, give generously and say a heartfelt thanks to the Rural Fire Service volunteers and Fire and Rescue crews.

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Illawarra RFS district officer David Bartlett said the control centre team was extremely grateful for the "monumental" amount of donations it had received.

Whilst Illawarra RFS brigades and the control centre are well stocked with goods, those wanting to contribute can do so in other ways.

"If you want to help, cash donations are welcome in two ways," Mr Bartlett said.

"People can give money to individual local brigades, which can be approached directly or through the control centre; or by contributing to all Illawarra brigades.

"The latter can be done by donating to the official Illawarra senior management team account.

"The team will then allocate the money where there is the need."

People can also donate to the RFS state bank account online.

Those wanting to donate to the victims of the bushfire can do so through charity bushfire appeals such as the Salvation Army, St Vincent's de Paul Society or Australian Red Cross.

"Money is preferable as goods and items are hard to sort, store and manage," Mr Bartlett said.

"Money allows vouchers to be handed out to those who need it and it injects money back into the community."

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Mr Bartlett said the Illawarra RFS had been inundated with goods, cash donations and business running events to raise money or by offering their services.

"We appreciate it," he said.

"Even though it doesn't seem like we are winning against the fire, we are still their battling.

"Illawarra's volunteers put in a lot of hours. We are sending 10 trucks full of volunteers per day to the Shoalhaven and Wollondilly fires.

"That is not to mention all the support people who coordinate communications, do community engagement and logistics. They are the unsung heroes.

"It is nice to be recognised and appreciated. But we don't do it for that or go searching for that recognition.

"The community has recognised that the Illawarra, despite lucky not having any fires, we are providing a large contribution."

Mr Bartlett also thanked the families of firefighters, many of whom had spent several days away over the holiday period.

He reminded people to be prepared and have their plan in case the Currowan fire spread to the Illawarra, especially on Saturday where dangerous weather conditions were expected.

"The distance the fire has traveled is long," he said. "It is possible the fire could move into the Kangaroo Valley and Carrington Falls area.

"No one can be complacent."

He said Illawarra RFS management team were prepared for the conditions on Saturday and residents should monitor fire activity through the Fires Near Me app.

Information on making a donation can be found here