NSW Rural Fire Service (NSW RFS) Commissioner Shane Fitzsimmons said this season had been unprecedented in terms of conditions experienced, the loss of lives and property, and the threat to communities across large parts of NSW.

"Fires this season have destroyed 2,448 homes; however, the great work of firefighters saw 14,481 homes saved," he said.

"We must also thank the international response and assistance from Canada, the United States and New Zealand."

Commissioner Fitzsimmons said that most tragically 25 lives were lost, including those of the three NSW RFS volunteers and three US aerial firefighters.

He said all emergency services personnel, especially NSW RFS members, have given so much, spending time away from their families, jobs and loved ones.

Commissioner Fitzsimmons has also praised the community for its response across the fire season.