South Korea logs earliest heat-related death on record amid May heat surge

South Korea recorded its earliest heat-related death on record Saturday when an 80-year-old man in Seoul died from heat illness, the Korea Disease Control and Prevention Agency said, as an unseasonably early heat wave pushed the capital's temperature to 31.3 degrees Celsius.

The death — South Korea's first heat fatality of 2026 — marks the earliest such record since the government began tracking heat illness through emergency rooms, raising concern among Korean-American families in Southern California with elderly relatives on the peninsula.

The Korea Disease Control and Prevention Agency detected the fatality through its newly activated emergency room surveillance network, which went live Friday across 516 facilities nationwide, according to The Korea Times. The victim was identified only as a man in his 80s living in Seoul.

The monitoring system's first full day of operation — Friday — logged seven heat illness patients visiting emergency rooms across the country. Gyeonggi Province reported four of those cases, Seoul two, and Incheon one, the KDCA said.

Seoul's daily high temperature reached 31.3 degrees Celsius on Saturday, well above typical levels for mid-May. South Korea's national average high was 28.2 degrees, The Korea Times reported.

Health authorities confirmed the death is the earliest heat-related fatality on record since the KDCA introduced its annual heat illness tracking program, which monitors emergency rooms during the summer season.

Officials urged the public to limit outdoor exposure during peak afternoon hours and to check on elderly and medically vulnerable neighbors as temperatures across the peninsula continued to exceed seasonal norms.

The KDCA's 516-facility emergency room network will continue tracking heat illness cases as public health officials warn that temperatures are running well ahead of seasonal averages across the Korean Peninsula.