South Korea activates emergency alerts for record heatwave; president calls it a national disaster as death toll reaches 19
LeeLee Jae MyungKorea Disease Control and Prevention AgencyKorea Meteorological Administration

South Korea activates emergency alerts for record heatwave; president calls it a national disaster as death toll reaches 19

South Korea is facing a record heatwave, prompting President Lee Jae Myung to declare it a national disaster as the death toll rises to 19. The capital, Seoul, is under a severe heatwave warning, with temperatures soaring to 42.5 degrees Celsius in Yangsan, the highest in 122 years.

South China Morning Post South China Morning Post+1 source4 August 2026 · 17:59 UTC
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South Korea is grappling with a severe heatwave that has led President Lee Jae Myung to label it a national disaster, with 19 fatalities reported.4

The Korea Meteorological Administration issued its first-ever heatwave warning for all of Seoul, as temperatures soared to 42.5 degrees Celsius in Yangsan, marking the highest in 122 years of records.1235

President Lee emphasized the need for urgent measures to protect citizens, stating, “We need to make efforts for a fundamental overhaul of the national crisis system, since this extreme weather is becoming normal.”9

The heatwave has resulted in over 2,000 heat-related illnesses since May, prompting emergency meetings and initiatives from local authorities.

In response, Seoul is deploying 200 trucks to spray water on roads to mitigate urban heat, while nurses are checking on 63,000 vulnerable residents.

The extreme weather is attributed to overlapping high-pressure systems and climate change, with scientists warning that such events are becoming more frequent.

As the heat shifts towards the densely populated capital, forecasts predict temperatures of 38°C on Tuesday, followed by three days of 37°C heat.

A construction worker described the conditions as brutal, stating, “We take a 10-minute break every hour, but there isn’t even a fan here.”

The government is also utilizing drones to broadcast safety messages in affected areas, highlighting the urgency of the situation.

Key Insight
“Yangsan hit 42.5°C on Sunday, the highest reading in 122 years, and Seoul is forecast to reach 38°C as the heat shifts west. Authorities are spraying 2,000 km of roads with 200 water trucks and checking on up to 63,000 vulnerable residents.”
South Korea heatwave: President Lee Jae-myung pledges support amid heat
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South Korea heatwave: President Lee Jae-myung pledges support amid heat
CuriousCats studied:
1
South China Morning PostSouth China Morning Post
“Authorities issued a heatwave warning for all of Seoul on Tuesday while the city of Yangsan recorded 42.5 degrees Celsius on Sunday”
South China Morning Post →
2
The GuardianThe Guardian
“Seoul is bracing for its first ever “severe heatwave warning” on Tuesday, as reels from a deadly heatwave that has seen the country record its highest ever temperature.”
The Guardian →
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