Thursday the 18th will be hot, with the highest apparent temperature rising above 33 C in some inland areas. Showers are also expected, mainly in inland regions.
According to the Korea Meteorological Administration, the afternoon high will be 26–32 C. Highs of 30 C or above are forecast for most of the country, and a heat advisory has been issued for inland areas of North Gyeongsang.
By region, temperatures will be: ▲Seoul 32 C ▲Incheon 30 C ▲Suwon 31 C ▲Chuncheon 31 C ▲Gangneung 29 C ▲Cheongju 31 C ▲Daejeon 31 C ▲Jeonju 30 C ▲Gwangju Metropolitan City 30 C ▲Daegu 32 C ▲Busan 28 C ▲Jeju 26 C.
The central region will see many clouds, turning gradually overcast from night, while the southern region and Jeju Island will be mostly overcast. In addition, showers will fall in southern Gyeonggi inland, the mid-to-southern inland mountains of Gangwon, and the inland areas of Honam and Yeongnam, as well as the northeastern mountains of North Gyeongsang.
Expected rainfall is 5–30 mm for the capital area, North and South Chungcheong, and Gangwon. Honam and Yeongnam will see 5–40 mm of showers. Some areas with showers may also get thunder and lightning with gusty winds.
At sea, strong winds will blow over the far East Sea, with waves running very high at 1.5–3.5 meters. The Korea Meteorological Administration urged vessels engaged in navigation or fishing operations to take extra care for safety.
Fine dust levels are at "moderate" to "good" across most regions nationwide.