Prisoners from Mannus Correctional Centre were relocated to Junee jail after bushfires forced the evacuation of Tumbarumba and surrounding towns.
Corrective Services NSW organised the evacuation of 155 minimum security inmates on January 2, taking them to Junee Correctional Centre.
"The decision was made after consulting with the Rural Fire Service and Police, following predictions of worsening fire conditions," a Corrective Services NSW spokesperson said.
The spokesperson said extra staff were brought in to assist with the evacuation where inmates are being housed in part of the recently opened maximum security accommodation facility.
"They will remain there as long as is necessary for their safety," they said.
Assistant Commissioner Custodial Kevin Corcoran said with the safety of staff and inmates as a first priority, evacuations were well thought out with all centres having fire management plans in place.
"So far in this fire season we have conducted safe and secure evacuations of Mannus, Glen Innes and Oberon Correctional Centres," he said.
"I thank our staff for the professional way they are dealing with these difficult situations, especially when their own families and properties are often also at risk."
The situation at Mannus is being monitored by staff in consultation with the Rural Fire Service and Police.
As at midday, January 10, there has been no fire damage to the prison.