South Korea Heatwave: Highest Temperature Ever Recorded 2026

South Korea has recorded its highest temperature ever since records began, hitting 42.5°C in Yangsan. This extreme heatwave has prompted authorities to issue urgent warnings, urging people to stop all outdoor activities immediately. As the country grapples with this unprecedented heat, understanding the impacts and safety measures becomes crucial.

Record-Breaking Heat in South Korea

The Korea Meteorological Administration (KMA) confirmed that the temperature in Yangsan reached 42.5°C on Sunday afternoon, the highest since modern weather observation started in 1904. This marks the fifth consecutive day with temperatures exceeding 40°C in the city, while other major cities like Daegu and Busan are experiencing highs in the late 30s.

The heatwave has also affected North Korea, with temperatures soaring to 40°C in some regions. Pyongyang has endured a week of nights where temperatures have not dropped below 25°C, making it difficult for residents to find relief.

How South Koreans Are Coping

Many residents have sought refuge in air-conditioned shopping malls, cafes, and mist-spray zones set up in public areas like Seoul. Ju Dong-yeol, a 27-year-old office worker, told AFP, "It is too hot to be outside doing anything. I can't think of anything else to do other than stay in air-conditioned places like home, shopping malls, and cafes."

Authorities have issued emergency heatwave alerts for more than 20 localities, a new warning category introduced this year. The alert is triggered when perceived temperatures hit 38°C or actual temperatures reach 39°C. The weather agency urged people to "immediately stop all outdoor activities," emphasizing that indoor spaces without air conditioning are dangerous.

Health Risks and Safety Measures

Extreme heat can lead to heat exhaustion, heatstroke, and other serious health issues. Vulnerable populations, including the elderly, children, and those with pre-existing conditions, are at higher risk. It is essential to stay hydrated, avoid strenuous activities during peak hours, and check on neighbors and family members.

Key Safety Tips

• Stay indoors during the hottest part of the day (usually 11 a.m. to 4 p.m.).
• Use air conditioning or visit public cooling centers.
• Drink plenty of water, even if you don't feel thirsty.
• Wear lightweight, light-colored, and loose-fitting clothing.
• Never leave children or pets in parked vehicles.

Comparison of Heatwave Impacts

Climate Change and Future Outlook

Scientists link such extreme heat events to climate change, which is increasing the frequency and intensity of heatwaves globally. South Korea's record-breaking temperatures serve as a stark reminder of the urgent need for climate action and adaptation strategies.

As the heatwave continues, officials are monitoring the situation and may extend alerts. Residents are advised to stay informed through official channels and follow guidance from local authorities.

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