Police named the victim as Edward Joseph Brookes, 63, from England.
Brookes disappeared in the surf in front of Karon Municipality Stadium at 2:40pm after enjoying lunch with his wife, Kata-Karon chief lifeguard Uten Singsom told the Phuket Gazette.
“By the time lifeguards noticed Mr Brookes was in trouble, he was about 70 meters from the shore,” Uten said.
Lifeguards rushed out and brought him back to the beach. They administered cardiopulmonary resuscitation (CPR), but were unable to revive him.