People in their 60s and older account for 73.2 percent of deaths since 2022

Members of the Korean Confederation of Trade Unions pour ice water over their heads during an Aug. 11 news conference outside the National Assembly in Seoul, calling on the government to allow construction workers to stop work during extreme heat. (Yonhap)
Members of the Korean Confederation of Trade Unions pour ice water over their heads during an Aug. 11 news conference outside the National Assembly in Seoul, calling on the government to allow construction workers to stop work during extreme heat. (Yonhap)

South Korea recorded 34 suspected heat-related deaths through August, nearly four times the nine reported in 2022, as the country endured its third-hottest summer on record.

The annual toll rose to 32 in 2023 and 34 in 2024 before falling to 29 last year, according to Korea Disease Control and Prevention Agency data obtained by Rep. Heo Jong-sik of the Democratic Party of Korea. A total of 138 deaths were recorded over the five years.

The increase has coincided with an unprecedented run of extreme summer heat. The past three summers were the three hottest since nationwide weather records began in 1973, according to the Korea Meteorological Administration.

The average temperature from June through August this year was 25.4 degrees Celsius, 1.7 degrees above the 1991-2020 average. Only 2025 and 2024 were hotter, with average temperatures of 25.7 C and 25.6 C, respectively.

Older people accounted for most of the heat-related deaths. Of the 138 recorded since 2022, 101, or 73.2 percent, involved people in their 60s or older.

The total included 20 people in their 60s, 27 in their 70s and 54 aged 80 or older. Those in the oldest age group accounted for 39.1 percent of all deaths during the five years.

This year, 16 of the 34 deaths, or 47.1 percent, involved people aged 80 or older.

The oldest person to die was a 101-year-old woman living in Gangneung, Gangwon Province, while the youngest was a 28-year-old man in Busan. Both had underlying cardiovascular conditions and died of heatstroke, according to the data.

Seoul and North Jeolla Province recorded the highest numbers of deaths this year, with six each. Busan, Incheon and South Gyeongsang Province reported four each.

No heat-related deaths were recorded in Jeonnam-Gwangju, Daegu, Daejeon, Ulsan or Sejong.

“With deaths from heat-related illnesses among the oldest age groups increasing, vulnerable people require particular attention,” Heo said. “We need to establish a protection system that can manage high-risk groups and respond quickly when they face a crisis.”


minsikyoon@heraldcorp.com