Aaron James Flynn vanished on his way to his uncle's funeral on November 12, 2016, after his station wagon ran out fuel 10km north of Rubyvale.
He was seen carrying a red jerry can and a blue esky as he walked back towards the town the next morning, but there were no further sightings of him.
Around the time he vanished temperatures topped 40 degrees centigrade and were described as 'blistering.'
Then on July 13 this year, a young girl riding a found a skull on a dried creek bed 6km away.
The esky and a pair of board shorts were found close to his remains, which were found spread around the creek bed.
On Monday, dental records confirmed the remains belonged to Mr Flynn.