Before that, police appealed for sightings of the man, who was understood to have been wearing a wetsuit and pink swim cap while going for his daily swim at Onerahi.
Police thanked the wider Onerahi community for their help and support.
At the height of the search, police, Coastguard and Surf Live Saving New Zealand were involved, and the police Eagle helicopter was also deployed.
If someone has seen the swimmer, has any dashcam footage from the area or has any further information regarding their disappearance, they can update police online or call 105, referencing file number 241021/1742.
Brodie Stone is an education and general news reporter at the Advocate. Brodie has spent most of her life in Whangārei and is passionate about delving into issues that matter to Northlanders and beyond.