Police have located the body of a 63-year-old jet ski rider who went missing in waters off Redcliffe, north of Brisbane.

The body of a man whose jet ski was spotted drifting in waters north of Brisbane has been found.

Police say they have located the body of the 63-year-old, believed to have been knocked off the jet ski by large waves in choppy conditions off Redcliffe, north of Brisbane, on Sunday.

A fishermen found the unmanned craft four kilometres offshore and notified police about 6.20pm (AEST), sparking a search that lasted until 4am Monday.

A full-scale search involving two helicopters and 15 boats resumed at first light.