The search for a missing kayaker on Lake Rotorua is set to continue today after an 18-year-old failed to return from his kayak on the lake on Wednesday.

Search and Rescue personnel will continue to search the shoreline today assisted by the Royal New Zealand Navy, Coastguard and the Police National Dive Squad, says a police spokesperson.

"The Navy will initially be using towed Side Scan Sonar but also have a multi-beam echo sounder and Autonomous Underwater Vehicle, should they need to search the deeper areas of the lake.

"The search area remains quite broad, and personnel will be searching multiple beaches, channel mouths and the lake itself out to and around Mokoia Island."

Anyone who saw the man potentially exiting the lake or in the water, from 2.30pm on Wednesday 12 August is asked to urgently contact Police.

Anyone with information should call 111 and quote event number P051519937.