[Weather] Cool Mornings and Evenings... Seoul Daytime High Reaches 30°C

Monday, September 21 is expected to be mostly clear across the country, but the temperature difference between day and night will reach up to 15 degrees Celsius.

Office workers and citizens visiting the '2026 Gwanghwamun Autumn Market with Small Business Owners' held on the 10th at Gwanghwamun Square, Jongno-gu, Seoul. Photo by Jo Yongjun

According to the Korea Meteorological Administration, most regions nationwide except for the east coast will see temperature differences between daytime highs and nighttime lows ranging from 10 to 15 degrees Celsius, and in some inland areas, the difference will exceed 15 degrees Celsius. Extra caution is advised for personal health management.

Morning low temperatures for major cities are forecast as follows: Seoul 18°C, Incheon 18°C, Chuncheon 13°C, Gangneung 16°C, Daejeon 15°C, Daegu 15°C, Jeonju 17°C, Gwangju 17°C, Busan 19°C, and Jeju 21°C. Daytime highs are expected to reach 30°C in Seoul, 28°C in Incheon, 28°C in Chuncheon, 25°C in Gangneung, 29°C in Daejeon, 28°C in Daegu, 29°C in Jeonju, 30°C in Gwangju, 27°C in Busan, and 26°C in Jeju.

Until 9 a.m., there will be areas with dense fog, with visibility of less than 200 meters, especially in inland Chungcheong and the central and northern inland regions of North Gyeongsang. Other inland areas nationwide may experience fog with visibility below 1 kilometer. Extra caution should be exercised for traffic safety, as fog will be especially dense on roads adjacent to rivers, lakes, or valleys in inland regions.

Fine dust levels across all regions will remain at a 'good' level.

This content was produced with the assistance of AI translation services.