Police in New Zealand are confident a body recovered from a national park last week is missing Penryn man Andrew Wyatt.

Constable Dave Cogger, who coordinated the search, said Mr Wyatt had an "unsurvivable" fall of over 100ft from Lake Constance Bluff.

Mr Wyatt's family have been kept up to date with the situation, and police are now trying to arrange a formal identification.

Andrew Ian Wyatt, 41, was last seen at 6am on December 15 as he left the Blue Lake Hut in Nelson Lakes National Park, carrying light equipment.

Police reported on December 27 that searchers had found a body at the bottom of a 100 metre cliff, below the Lake Constance Bluff, on Mr Wyatt's intended route between Blue Lake Hut and Waiau Pass.

Searchers were previously prevented from getting to the area due to bad weather, but by 5.30pm local time it was reported that one of the teams had located the body, which is yet to be formally identified.

Mr Wyatt arrived in New Zealand on November 21 to walk the Te Araroa Trail, a popular route which stretches the length of the country, and his last contact with his family was on December 12, three days before he went missing.

He was expected to collect a food parcel from a village on December 16, but never arrived, a helicopter reconnaissance was carried out on December 23 and spent three hours visiting all the local hiking huts as concerns grew about deteriorating weather conditions.