On Saturday the 22nd, the rain that began the previous day will continue through the morning, with showers falling in many places nationwide from the afternoon.
According to the Korea Meteorological Administration on the 21st, rain is expected through the morning of the 22nd, mainly in the Seoul metropolitan area and the inland and mountainous areas of Gangwon. Showers will begin in the morning in the Jeonnam region, the western inland of Gyeongnam, and Jeju Island, and are forecast to expand from the afternoon to the central region and other parts of the southern region.
Showers will mostly stop in the late afternoon in the southern region and around evening in the central region. In areas with showers, some places will see thunder and lightning accompanied by gusty winds.
Expected precipitation from the 21st to 22nd is 5–40 mm in Seoul, Incheon, Gyeonggi, and the inland and mountainous areas of Gangwon, and around 5 mm on the East Coast of Gangwon. Daejeon, Sejong, the inland areas of Chungnam and Chungbuk, Gwangju and Jeonnam, the inland areas of Jeonbuk, Daegu and Gyeongbuk, Ulsan and the inland areas of Gyeongnam, and Jeju Island are expected to receive 5–60 mm of rain.
The sweltering heat will continue. With heat advisories in effect mainly for the Chungcheong region, the southern region, and Jeju Island, the maximum apparent temperature will rise to around 33 degrees in most areas nationwide. In parts of the Jeolla region, the Gyeongnam region, and Jeju Island, the maximum apparent temperature is expected to rise to around 35 degrees.
Morning lows are forecast at 21–26 degrees, and daytime highs at 28–34 degrees. In Seoul, the morning low will be 24 degrees and the daytime high 30 degrees. Incheon will see 24–30 degrees, Suwon 24–31 degrees, Daejeon 24–32 degrees, Gwangju 26–34 degrees, Daegu 24–32 degrees, Busan 26–34 degrees, and Jeju 27–33 degrees.
Waves will run 0.5–1.0 meters off the East and South Coasts and 0.5–1.5 meters off the West Coast. Offshore wave heights are expected at 0.5–1.5 meters in the East Sea, 0.5–3.0 meters in the West Sea, and 0.5–2.5 meters in the South Sea.