NSW Commissioner Rob Rogers said in the coming weeks and months, the RFS was particularly concerned about grass fires.

"Land holders and firefighters have reported increased grass growth from recent rain, particularly west of the ranges," he said.

"The threat of grass fires will increase as this dries out."

READ MORE: Changes to JobSaver extend support for businesses in regional NSW

From the Wednesday, 1 September people will need a fire permit to light a fire outdoors, including hazard reduction burns.

Fire permits are free and available from local RFS brigade or fire control centre and ensure fire is used safely by setting rules about how a fire is lit and maintained.

Permit holders must also let firefighters and their neighbours know when they are conducting burns on their properties.

READ MORE: Willinga Park's Emma Booth wraps up second Paralympic Games campaign in style

"While hazard reductions are an important part of preparations, landholders need to be extremely careful, as escaped burns can lead to heavy penalties," Commissioner Rogers said.

"If a fire does escape, make sure you call Triple Zero (000) immediately so that emergency services can respond and minimise the damage."

And while local firefighters are busy preparing for the upcoming bushfire season, Commissioner Rogers said residents should do the same.

READ MORE: Group shares concerns over Mummaga Lake in light of council's planned land sale

"Now is the time to update and discuss your bushfire survival plan," he said.

"Have the conversation with your family about what you will do during a fire - talk about when you'll leave, where you'll go, what you'll take and what you'll do with animals."

All remaining areas in NSW will start their bushfire danger period on Friday, October 1.