The man aged in his 20s went swimming at Waikawa Harbour, in the Catlins, at 1.40am.
A Dunedin man who got into trouble after going swimming while intoxicated was ''very lucky'', police say.
Search and rescue co-ordinator Sergeant Ian Martin said police were called at 1.40am this morning about a man who had gone swimming at Waikawa Harbour, in the Catlins.
A search and rescue operation
was launched, which included the Waikawa Rural Fire brigade, commercial fishers, and a helicopter from Southern Lakes Helicopter.
The man, who was in his 20s, managed to swim ashore on the opposite side of the harbour, and crossed farm land in a remote area. He walked 6km in Progress Valley and found a house from which he reported he was safe, just before 3.30am.
Sgt Martin said the man had been drinking with a group who encouraged him to swim to a moored yacht.
