South Korea Declares National Disaster as Record Heatwave Claims 19 Lives and Pushes Temperatures Above 42C

South Korea Faces Unprecedented Heatwave Crisis

South Korea is battling one of the most severe heatwaves in its recorded history, prompting President Lee Jae Myung to declare the extreme weather event a national disaster. With temperatures soaring above 42C in some regions and at least 19 confirmed deaths linked to the scorching conditions, authorities are scrambling to protect millions of residents from the dangerous heat.

The ongoing heatwave has affected nearly every part of the country, overwhelmed healthcare systems, increased electricity demand, and raised concerns that climate change is making such extreme weather events more frequent and intense.

Death Toll Rises as Heatwave Intensifies

According to South Korean health authorities, at least 19 people have died due to heat-related causes during the current heatwave. More than 2,000 people have received treatment for heat-related illnesses since May, highlighting the growing public health emergency.

Among the victims were two elderly men who died while working outdoors. One collapsed inside a greenhouse near Seoul, while another lost his life in the southern port city of Busan. These incidents underscore the heightened risks faced by outdoor workers, farmers, and vulnerable populations during prolonged periods of extreme heat.

Health officials continue to urge residents to stay indoors during peak afternoon hours, remain hydrated, and seek immediate medical attention if symptoms of heat exhaustion or heatstroke develop.

President Lee Declares Heatwave a National Disaster

During a cabinet meeting, President Lee Jae Myung described the ongoing heatwave as a national disaster and instructed government agencies to strengthen emergency response measures.

He emphasized the need to protect citizens' daily lives, inspect power infrastructure, and ensure electricity supplies remain stable as air conditioning demand reaches record levels.

The president also warned that abnormal weather patterns may continue for an extended period, calling for a long-term overhaul of South Korea's disaster management system.

According to Lee, extreme weather events are becoming the new normal, requiring permanent changes in how governments prepare for and respond to climate-related emergencies.

Seoul Issues Historic Severe Heat Warning

For the first time since South Korea introduced its upgraded heat alert system, Seoul issued a severe heat warning covering the entire capital city.

The warning was triggered after temperatures and heat index forecasts exceeded emergency thresholds. Meteorologists predicted temperatures of 38C in Seoul, with several consecutive days expected to remain above 37C.

The warning affects more than nine million residents living in the capital and surrounding metropolitan areas.

South Korea introduced its new severe heat warning system on June 1, designed to provide earlier alerts when dangerous conditions persist for multiple days.

Record-Breaking Temperatures Across South Korea

The current heatwave has shattered long-standing temperature records.

Yangsan, located in South Gyeongsang Province, recorded an astonishing 42.5C, marking the highest temperature measured during more than 122 years of weather observations in South Korea.

Other cities also experienced exceptional heat:

• Goryeong reached 41.2C.
• Several southeastern regions exceeded 41C.
• Parts of Seoul recorded temperatures close to 39C.

Meteorologists say the intense heat has been fueled by overlapping high-pressure systems combined with clear skies.

The situation has been made even worse by the foehn effect, where air crossing mountain ranges becomes hotter and drier as it descends, dramatically increasing temperatures across southeastern and central regions.

Emergency Measures Introduced Nationwide

Authorities have launched extensive emergency operations to reduce health risks and support vulnerable communities.

In Seoul, officials held emergency meetings and dispatched healthcare workers to monitor approximately 63,000 high-risk residents, including elderly people, individuals with disabilities, and those living with chronic illnesses.

The city has also deployed nearly 200 water trucks, spraying around 2,000 kilometers of roads multiple times each day to reduce surface temperatures.

Public cooling mist stations are operating throughout the city, providing temporary relief for pedestrians and commuters.

In North Gyeongsang Province, emergency teams are using drones equipped with thermal cameras and loudspeakers to monitor crowded tourist destinations while broadcasting heat safety warnings.

Officials are also paying special attention to residents living in older single-room housing known as "jjokbang," where many homes lack proper insulation or air conditioning.

Most of the Country Under Heat Alerts

The heatwave has spread across nearly the entire country.

Government data shows that 217 of South Korea's 235 land-based warning zones, representing approximately 92 percent of the nation, remain under some level of heat alert.

The widespread nature of the event has placed significant strain on hospitals, emergency responders, and electricity providers as cooling demand continues to climb.

Authorities are monitoring the national power grid closely to prevent outages during periods of peak electricity consumption.

East Asia Struggles With Extreme Heat

South Korea is not alone in facing dangerous temperatures.

Large parts of East Asia are experiencing an exceptionally hot summer. Japan recently recorded temperatures exceeding 40C in several cities and introduced the term "cruelly hot day" to warn residents about life-threatening conditions.

Weather experts are also monitoring Typhoon Dolphin, which may influence weather patterns across the region.

If the storm tracks toward eastern China, forecasters say humidity levels over the Korean Peninsula could increase, making conditions feel even hotter.

Alternatively, a path closer to southern Korea could bring clouds, rainfall, and stronger winds that may temporarily reduce temperatures.

Climate Change Increasing Heatwave Frequency

Scientists continue to warn that climate change is making heatwaves more frequent, longer-lasting, and more intense.

Historical weather records illustrate this trend clearly.

During the 1970s, South Korea averaged approximately eight days per year with temperatures reaching 33C or higher.

Over the past five years, that number has more than doubled to around 19 days annually.

Experts believe warming global temperatures are increasing the likelihood of prolonged high-pressure systems, leading to more persistent and dangerous heat events.

Governments across Asia are now investing in stronger disaster preparedness strategies, urban cooling infrastructure, and public health initiatives to reduce future risks.

Staying Safe During Extreme Heat

Public health officials recommend taking several precautions during periods of extreme heat:

• Stay indoors during the hottest part of the day.
• Drink plenty of water, even if you are not thirsty.
• Wear lightweight, light-colored clothing.
• Check regularly on elderly relatives and neighbors.
• Avoid strenuous outdoor work whenever possible.
• Never leave children or pets inside parked vehicles.
• Seek immediate medical attention if symptoms of heatstroke develop.

As South Korea confronts one of its most dangerous weather emergencies in modern history, the crisis serves as another reminder that adapting to a warming climate is becoming an urgent priority for governments around the world.

Source: Korea Disease Control and Prevention Agency (KDCA), South Korean government statements.

Disclaimer: This article is a written summary created for informational and educational purposes. It is based on publicly available reporting and official government information. Readers should refer to official government agencies and local weather authorities for the latest updates and emergency guidance.