“The police Eagle helicopter has conducted an initial aerial search, as well as search efforts from Surf Lifesaving New Zealand,” a police statement said.
“The man has not yet been located and inquiries continue.”
Appeal for any sightings shortly before fall
Police say the man, who was described as being of Asian descent, was wearing a lifejacket when he fell.
Authorities are appealing to members of the public who may have information about the man or anyone who saw him before 1.50pm.
“Please approach our staff in the area or contact police.”
Search and rescue teams from Surf Lifesaving NZ, the Piha Area Search and Rescue and police are continuing search efforts.
Can you help? Anyone with information is urged to contact police on 105.