NSW Parks and Wildlife Service's (NPWS) Jacki Roberts said the park could open to the public next Friday if all goes well, but some areas might remain closed depending on where the fire hit.

The fire at the park is still at advice level on Fires Near Me, but NSW Rural Fire Service manager Namoi/Gwydir team Michael Brooks said it was "not running."

"There's only a small amount of fires and only a couple of unburnt areas smoldering now and these will continue to smolder for quite a few weeks," Mr Brooks said.

"But by the time [NPWS] clear everything it's possible [to reopen] because the smoldering areas are not near the visitor areas."

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Meanwhile, RFS incident controller Jeff Hogan said winds had "moderated fairly significantly" since Tuesday and Wednesday, so crews were attempting to stop the Moonbi fire from spreading.

"Our crews are out in the field establishing and strengthening containment lines and we've given them an aim of what to achieve in the next few days and they'll be supported by aircraft," Mr Hogan said.

"The firies are achieving some good results so we're pretty happy."

Mr Hogan said above all, locals needed to have a bushfire survival plan in place.

"If you don't have one then you need to develop your plan now and have that conversation with your family and people in that household and obviously doing that early rather than leaving it to the last minute is the best way to go," he said.

"The Fires Near Me app, the NSW RFS website and the NSW RFS Bush Fire Information Line [on 1800 679 737] are probably the best sources of information for people to keep up-to-date ... because it's where we put the most recent information about the fires."