Severe Rainfall Expected in Central Regions, Up to 120mm in Seoul and Gangwon

By BAEK SEO HYUN Posted : July 20, 2026, 18:36 Updated : July 20, 2026, 18:36

On Tuesday, July 21, strong rain accompanied by gusty winds and thunderstorms is expected to hit central regions of South Korea. The Seoul metropolitan area and Gangwon Province are forecasted to receive over 120mm of rain, while southern regions will continue to experience hot weather.


According to the Korea Meteorological Administration, the Seoul metropolitan area and the five western islands will see rainfall between 30 to 80mm, with some areas experiencing heavy downpours exceeding 120mm.


In the inland and mountainous areas of Gangwon, 30 to 80mm of rain is also expected, with the central and northern inland regions anticipating over 120mm.


In the Chungcheong region, including Daejeon, Sejong, South Chungcheong, and North Chungcheong, rainfall of 30 to 80mm is expected, with northern South Chungcheong's western coast possibly receiving over 100mm.


In North Jeolla, Gwangju, South Jeolla, Daegu, North Gyeongsang, and western inland areas of South Gyeongsang, rainfall will range from 5 to 40mm, while Jeju Island is expected to see around 5mm.


Areas experiencing rain may face intense downpours accompanied by gusty winds and thunderstorms, raising concerns about river flooding, lowland inundation, and landslides.


Hot weather will persist in southern regions, with morning lows expected between 22 to 26 degrees Celsius and daytime highs ranging from 26 to 37 degrees Celsius. The highest temperatures are forecasted to reach 29 degrees in Seoul, 28 degrees in Incheon, 27 degrees in Chuncheon, 31 degrees in Daejeon, 32 degrees in Jeonju and Gwangju, 34 degrees in Daegu and Ulsan, and 33 degrees in Jeju.


Thunderstorms and gusty winds are also expected over the Yellow Sea and East Sea, necessitating caution against maritime safety incidents. Wave heights are predicted to be between 0.5 to 1.5 meters in the East and South Seas, and 0.5 to 1.0 meters in the Yellow Sea, with offshore wave heights also expected to be between 0.5 to 1.5 meters across all seas.





* This article has been translated by AI.

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