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Cold Snap Pushes Seoul Below Freezing as South Korea Issues Cold-Wave Alerts

Forecasters expect the cold to persist through Thursday, then conditions ease toward seasonal norms.

People dressed in winter clothing walk on a street in Gwangmyeong, just southwest of Seoul, on Nov. 17, 2025. (Yonhap)
People in thick winter clothing walk on Gwanghwamun Square in central Seoul on Nov. 18, 2025. (Yonhap)
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Overview

  • Seoul recorded its first sub-zero reading of the season late Monday, dropping to minus 2 C by 5:46 a.m. Tuesday, according to the KMA.
  • Strong winds drove the capital’s perceived temperature to about minus 5.9 C.
  • Inland and mountainous areas were far colder, including minus 12.1 C at Hyangno Peak and around minus 8 C in northern Gyeonggi.
  • Cold-wave advisories were issued for several inland regions, including Gangwon, North Gyeongsang, northern North Chungcheong and Busan.
  • The KMA forecast daytime highs of roughly 4–11 C with gusts near 55 kph, localized rain or snow on the west coast and Jeju, and a return toward seasonal averages after Thursday.