South Korea Hits Record 42.5C as Authorities Order Halt to Outdoor Work

The south-eastern city of Yangsan registered 42.5C on Sunday afternoon, shattering South Korea's national temperature record since modern weather observations began in 1904. The historic reading prompted emergency orders from national authorities directing residents to immediately stop all outdoor activities as life-threatening heat grips the peninsula. With high pressure systems trapping scorching air and local infrastructure under immense strain, the government has elevated its emergency response to Level 2.

What People Are Searching For

Search interest has surged online as residents and international observers track whether South Korea's unprecedented heatwave will continue to spread into Seoul and western regions. Main queries center on the exact high temperatures recorded in Yangsan, how high the national death and hospitalization tolls have climbed, and whether upcoming weather systems like Typhoon Dolphin will bring rain or push humidity even higher.

What Is Confirmed

Data from the Korea Meteorological Administration (KMA) confirms that Yangsan in South Gyeongsang Province reached 42.5C at 1:26 pm on Sunday, marking the highest temperature in 122 years of record-keeping. It was the fifth consecutive day that temperatures in Yangsan topped 40C. Elsewhere, Gyeongju hit 40.3C, while cities like Daegu, Busan, and Changwon sweltered in high daytime temperatures that forced the Korea Baseball Organization to cancel professional matches.

The Korea Disease Control and Prevention Agency (KDCA) reported that 1,781 people were treated for heat-related illnesses nationwide between May 15 and Friday, with at least 13 deaths suspected to be linked to the extreme heat. Agricultural impact has been severe: reservoir levels in South Gyeongsang fell to 41.7 percent of capacity, leaving locations like Baegan Reservoir in Miryang at a critical 1.1 percent level. Over 7,000 pigs and 74,000 chickens have died from heat stress, while coastal fish farms reported thousands of dead flounder and mullet as water temperatures climbed.

In response to the crisis, Prime Minister Han Seong-sook directed local authorities to mobilize resources and safeguard vulnerable citizens.

Each ministry shall use all available channels, including public broadcasters, emergency text messages, electronic information boards and village broadcasts, to swiftly inform the public about heat wave conditions.

What Is Unconfirmed

While the immediate temperature records are fully verified, the precise track and impact of Typhoon Dolphin remain subject to ongoing forecast updates. Meteorological models show the storm moving toward the East China Sea, but weather agencies have not yet confirmed whether its outer circulation will bring cooling rains or draw additional moisture and heat into the peninsula. Reports regarding total crop yield losses and complete financial estimates across the agricultural sector remain incomplete as local inspections continue.

The Bigger Picture

The record spike comes as high-pressure systems—specifically the Tibetan High and the North Pacific High—trap descending hot air over East Asia. Historical KMA data indicates that the average annual number of heatwave days in South Korea has more than doubled over the past five years to 19 days, compared to just eight days per year during the 1970s. The phenomenon aligns with broader global climate trends and the return of El Niño, which has driven intense summer conditions, drought, and heat warnings across East Asia, southern Europe, and North Africa.

Latest Status

The Ministry of the Interior and Safety has raised its national heatwave response to Level 2. Labor Minister Kim Young-hoon has officially recommended that employers halt all outdoor work when perceived temperatures touch 38C. Easterly winds are predicted to push extreme heat westward toward Seoul, where temperatures are forecast to hit 37C. Weather authorities continue to monitor Typhoon Dolphin closely to determine if the stifling conditions will break later in the week.

Frequently Asked Questions

What is the highest temperature ever recorded in South Korea?

The highest temperature ever officially recorded in South Korea is 42.5C, registered in the south-eastern city of Yangsan on Sunday, August 2, 2026.

Why are authorities telling people to stop outdoor activities?

The Korea Meteorological Administration issued heat warnings advising an immediate halt to outdoor work because perceived temperatures over 38C pose life-threatening heatstroke risks, particularly without access to air-conditioned spaces.

How many people have been affected by the heatwave in South Korea?

According to health authorities, at least 1,781 people have been treated for heat-related illnesses nationwide since mid-May, with 13 reported deaths tied to the extreme conditions.

What role does Typhoon Dolphin play in the weather forecast?

Typhoon Dolphin's eventual trajectory will dictate whether the heatwave eases or intensifies. A path closer to China could increase humidity and worsen heat, whereas a track nearer to the peninsula could bring rain and wind to lower temperatures.