NSW National Parks are worried about fires this season but say a lot has been done to mitigate risk.

Director Tom Bagnet says many parks are closed due to the high fire risk and they are monitoring a number of fires in parks.

Tom Bagnet says they are quite concerned as around the state they have 86 parks that are affected by various types of closures.

"We have closed some walks and remote camping areas to reduce the risk.

"We have helicopters ready if there is an outbreak.

"In the last twelve months we have treated 206,000 hectares of reserves and parks to reduce fire risk, which is way above the minimum of 135,000 hectares.

"I understand that people are worried about fires in National Parks after the situation in the Warrumbungles last year but we have taken a bigger than average mitigation approach this year."