A search for a missing kayaker in the Firth of Thames is expected to resume today.

The man set out from Kaiaua around 3pm on Saturday with the intention of fishing at the mussel farms.

He did not return as expected and was reported missing by his family on Saturday night, says a police spokesperson.

Police say the search was stood down over night and is expected to begin again this morning.

"Police are actively engaging with the man's family at this difficult time.

"Police still urgently want to hear from anyone in the Firth of Thames area who may have seen something which could assist in locating the missing kayaker."

If you can help, please call 111 and quote event number P052502217.