The Orroral Valley fire, which has burnt through more than 86,000 hectares, was "being controlled" on Saturday morning.
The fire continued to burn at an advice warning level and no properties were under threat.
There was still active fire in the area and residents needed to remain vigilant, the Emergency Services Agency said in a statement.
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"Milder temperatures and an increase in humidity are assisting in fire suppression efforts," the agency said.
"Specialised teams continue to assess all roads and road closures as a priority, to re-open once deemed safe."
The fire started on January 27 about 1pm after a landing light on an army helicopter ignited dry grass in the Namadgi National Park.
The fire spread quickly, with the burnt perimeter approximately 134 kilometres long. Of that, 60 kilometres has been extinguished with 74 kilometres still active fire edge.
