Police are confirming a man has died in a water-related incident overnight in Coroglen, Coromandel.

This marks the third water-related death in the region this week, with one being reported following a rescue mission in Whangamata on Wednesday, January 18, and one being reported following a report of a missing man on Tuesday evening in the same area.

In relation to the latest death, a police spokesperson says "our thoughts are with his loved ones at this sad time".

"The death will be referred to the Coroner."

The north side of Whangamatā beach is patrolled by surf lifesaving through the season until April, while the south side is only patrolled with additional lifeguards during the busy holiday season from December 26 until January 13.

Surf Life Saving NZ Eastern regional manager Chaz Gibbons-Campbell. Photo: File/SunLive.

Surf Life Saving NZ Eastern regional manager Chaz Gibbons-Campbell says people should be aware dangerous events can happen in areas of water people may perceive to be safe.

"Our key safety messages, as always, are for people to swim between the flags and to be aware of your swimming capabilities and how conditions can quickly change."

- Additional reporting by Annemarie Quill/Stuff.