The thermometer reads 48 degrees outside.
Firefighters have been on high alert on Friday hoping the Deans Gap forest fire, on the NSW south coast, doesn't break its containment line.
There are 42 fire trucks and five water-bombers and four remote teams tackling hot spots in the bush.
More than 9000 hectares have burnt since the Deans Gap fire took off early last week.
A handmade sign nailed to a power pole across from the Rural Fire Service Wandandian staging area, near Nowra, says Libby sends her love to Robert, one of the firies.
RFS logistics officer Robyn Bolton told AAP: "The boys are exhausted after going hard at it for over a week."
She said the firefighters' spirits were high and they were being looked after well by catering teams.
Despite the extreme heat, it's been a "quiet one" for fire crews.
But Ms Bolton knows first-hand the danger of becoming complacent.
A forest fire in the area 11 years ago unexpectedly swung back towards her farm, and she lost 28 head of cattle.
Lloyd Dutton's Bawley Point RFS brigade is stationed on a farm property and are "playing the waiting game".
There's a spot fire coming closer in the distance.
"We're going to give it a big hit," he said.
He's hoping a cool change will come through and turn the fire back on itself.