Emergency Medical Services personnel responded to a call Monday afternoon of a possible drowning in waters near Tonggs Beach.
At 2:06 p.m., a man was apparently found in the water by surfers, who then brought him to shore.
He was pronounced dead at the scene by paramedics.
The Honolulu medical examiner identified the man Wednesday as Ralph Savoia, 54, from Whittier, Calif.
His cause of death has yet to be released.