
The morning low soared to 23 degrees Celsius, the highest early summer temperature since weather observations began in 1907, breaking the previous record of 21.8 degrees set in May 2018.
Partly due to humid southerly winds, the unusually warm conditions came, coinciding with "Soman," the eighth of the twenty-four seasonal periods, which literally means the creeping arrival of summer according to the lunar calendar.
Morning temperatures in other metropolitan areas also rose, reaching 20.7 degrees in Incheon and 20.1 degrees in Paju, Gyeonggi Province.
The KMA forecast that the early summer heat will linger until Thursday.
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