On the 19th, the first workday after the Lunar New Year holiday and the seasonal division "Usu (Rain Water)," morning temperatures will drop below freezing nationwide and winds will be slightly strong, making it chilly.
The morning low nationwide is expected to be -8 to 2 degrees, with afternoon highs of 5 to 13 degrees. Forecast lows and highs for major cities are Seoul -2 and 7, Incheon -3 and 5, Daejeon -4 and 11, Gwangju -3 and 9, Daegu -4 and 12, Ulsan -3 and 13, and Busan 2 and 12.
In particular, across the inland Gyeongsang region, the temperature difference between day and night will be 15 degrees or more.
Temperatures will remain near normal through the morning of Friday the 20th, then rise above normal from the afternoon.
As Korea remains under the influence of a high-pressure system with continued clear skies, the air will stay very dry, especially in areas under dry weather advisories such as southern inland North Gyeongsang and central and eastern South Gyeongsang, and other regions will gradually become drier.
At sea, from the early morning of the 19th in the inner central East Sea offshore, inner northern offshore South East Sea, central East Sea nearshore, and off North Gyeongsang, and through the morning of the 19th in the outer central East Sea offshore and outer northern offshore South East Sea, strong winds of 30 to 60 kph (8 to 16 m/s) and waves of 1.5 to 4.0 meters will persist under high seas advisories, so caution is advised.