Near windless conditions might well have spared Aupouri Forest from a major fire.
Bob Shirley, of Summit Forests, said as it happened the forest had not been at great risk, but it could have been a very different story if the conditions had not been so benign on Saturday.
The cause of the fire, west of Waiharara, was unknown, he added, but fires were lit by humans, whether maliciously or accidentally.
The flames had covered a significant area of scrub, taking some small pine trees and edging into the forest itself. And that prompted a warning that the Far North was still in the grip of a long dry summer.
"We will need significant rain to put an end to this fire season," Mr Shirley said.