Seoul just logged 86.2 degrees Fahrenheit (30.1 degrees Celsius), setting a new all-time October high and surpassing the previous mark from over a century ago.
Here's what to know
With records going back to October 1, 1907, The Korea Times reported that Seoul's 86.2-degree Fahrenheit (30.1 degrees Celsius) reading is now the city's hottest October day since October 3, 1913.
Daejeon also posted a new October high, reaching 88.7 degrees Fahrenheit (31.5 degrees Celsius) and topping the city's earlier record of 88.2 degrees Fahrenheit (31.2 degrees Celsius) from October 3, 2021.
Forecasters attributed the heat to easterly winds that lifted temperatures to nearly 18 degrees Fahrenheit (10 degrees Celsius) above seasonal norms. After crossing the Taebaek Mountains, those winds warmed through a foehn effect, adding even more heat to western parts of the country.
More background
Temperatures near or above 86 degrees Fahrenheit (30 degrees Celsius) in places such as Seoul, Daejeon, and Cheongju can raise heat stress risks, especially for older adults, children, and outdoor workers.
The unusual hot spell is not expected to last. Nationwide rain, followed by colder air dropping in from the north, should pull morning temperatures down to roughly 41 to 57.2 degrees Fahrenheit (5 to 14 degrees Celsius). The drop can create another sudden strain on health and safety.
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The swings can also disrupt daily routines and local economies. Farmers, transit systems, schools, and small businesses in record-setting areas such as Jeongeup, Wonju, and Icheon may need to adjust quickly as demand for cooling gives way almost immediately to colder early-morning conditions.
Where can I learn more?
Seoul's October heat is part of unusual temperature records showing up well outside peak summer. Here is some coverage on rising temperatures across the globe.
• Across Australia, highest-ever October temperatures spread nationwide with little relief in sight.
• In Japan, a city set a new national record amid unprecedented officially tracked heat.
• Across the United States, dozens of cities shattered winter heat records above historical averages.
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