Weather Forecast: Heavy Rain Expected Across South Korea on Sunday

By Cho Jae Hyung Posted : August 15, 2026, 17:28 Updated : August 15, 2026, 17:28

On Sunday, August 16, South Korea will experience mostly cloudy weather, with heavy rain expected particularly in the southern regions and Jeju Island.
 
According to the Korea Meteorological Administration on August 15, rain will fall across the country, including Seoul, Incheon, Gyeonggi, Daejeon, Sejong, Daegu, Busan, and Ulsan.
 
The expected precipitation by August 17 is as follows: 20 to 60 mm in Seoul, Incheon, Gyeonggi, the five western islands, and inland and mountainous areas of Gangwon; 5 to 40 mm on the eastern coast of Gangwon; 20 to 60 mm in Daejeon, Sejong, South Chungcheong, and North Chungcheong; 50 to 100 mm in Gwangju, South Jeolla, Daegu, North Gyeongsang, and Jeju; 30 to 80 mm in North Jeolla; and 50 to 150 mm in Busan, Ulsan, and South Gyeongsang. The southern coast of South Jeolla and areas near Jirisan Mountain are expected to receive over 150 mm, while the mountainous regions of Jeju could see more than 200 mm.
 
Morning low temperatures on the 16th are forecasted to range from 21 to 24 degrees Celsius, with daytime highs expected to be between 24 and 30 degrees Celsius.
 
The anticipated low temperatures in major cities are: 24 degrees in Seoul, 24 degrees in Incheon, 22 degrees in Chuncheon, 23 degrees in Gangneung, 23 degrees in Daejeon, 23 degrees in Daegu, 23 degrees in Jeonju, 23 degrees in Gwangju, 23 degrees in Busan, and 25 degrees in Jeju.
 
The expected high temperatures are: 30 degrees in Seoul, 30 degrees in Incheon, 29 degrees in Chuncheon, 26 degrees in Gangneung, 27 degrees in Daejeon, 26 degrees in Daegu, 28 degrees in Jeonju, 28 degrees in Gwangju, 26 degrees in Busan, and 29 degrees in Jeju.
 
Air quality is expected to be 'good' across all regions.



* This article has been translated by AI.

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