A Czech bushwalker who spent a chilly night in the NSW Blue Mountains has been found "safe and well" and will be winched to safety.
David Lustina, 27, left the Katoomba area headed for the Ruined Castle rock formation about five kilometres away on Thursday morning.
The alarm was raised after he failed to return to his accommodation that night, with police being notified just before midnight that he was missing.
Following an extensive search, Mr Lustina was spotted in bushland by PolAir before 2pm on Friday.
"A man missing in bushland in the Blue Mountains has been located safe and well," NSW Police said in a statement.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Katoomba resident Tom Henderson said temperatures overnight and into the morning were among the coldest this winter.
"This has been one of the coldest nights in the last month at least, bloody cold," he told AAP on Friday.
"If you were young and healthy you might survive - but you wouldn't sleep. It's frostbite weather - not nice."
Katoomba township recorded a temperature of 1.4 degrees Celsius overnight, according to the Bureau of Meteorology.
Friday's search involved police officers from the Blue Mountains local command, Police Rescue, PolAir and SES personnel.
Mr Henderson said the well-trodden bush tracks around Katoomba were usually quite safe and most tourists carried guidebooks.
"But you look out into the bush and it's so dense and foreboding," he said.
"It's really inhospitable."
Mr Lustina's Facebook page suggests he's an intrepid traveller who's halfway through a one-year visa to visit New Zealand.
"Hooray for adventure," he wrote in February as he made his way to Christchurch via Shanghai.
