Sunday Rain to Hit Jeju, Southeast Coast, Then Capital Area by Night

Sunday, October 4, 2026, will see rain across South Korea, starting in the southeastern coast and Jeju, then spreading to the capital area by night. The weather system will bring showers and potential thunderstorms. The Korea Meteorological Administration reports a pressure trough moving east from the West Sea will affect central regions and North Jeolla from evening. Expected rainfall is 5-10mm for Busan, Ulsan, and the North Gyeongsang coast, with less than 5mm for Jeju. Rain will expand nationwide by Monday morning. Daytime highs will range from 22 to 26 degrees Celsius, near or slightly above seasonal averages. A dry weather advisory is in effect for Seoul, increasing fire risk. Fine dust levels are expected to be good across all regions.