A man in his 30s who’d gone for a cold-water swim after boozing on the beach was found dead off Coney Island yesterday, police said.

The victim was found at around 7 a.m. near West 19th Street in the area near MCU Park. There were no obvious signs of trauma on the body.

Cops, who had feared the man’s drinking partner was missing, too, found him at his home.

The investigation of the incident is continuing.