On Sunday the 21st, skies nationwide are expected to be occasionally cloudy. Yeongdong in Gangwon will be mostly cloudy.
Yeongdong in Gangwon and the east coast of North Gyeongsang will see occasional rain through the morning. On Jeju Island, some areas will get occasional rain from nighttime.
Expected precipitation is around 5 mm in Yeongdong, Gangwon, and less than 5 mm on the east coast of North Gyeongsang. Jeju Island is forecast to receive a total of 5–20 mm of rain through the following day.
As of 5 a.m. that day, temperatures were 17.4 C in Seoul, 17.4 C in Incheon, 16.7 C in Suwon, 14.7 C in Chuncheon, 17.5 C in Gangneung, 19.0 C in Cheongju, 18.2 C in Daejeon, 17.2 C in Jeonju, 17.9 C in Gwangju, 23.2 C in Jeju, 17.2 C in Daegu, 20.4 C in Busan, 18.0 C in Ulsan, and 19.9 C in Changwon.
Daytime highs will range from 23 to 28 C, similar to average years.
Inland areas will see large temperature gaps of around 10 degrees between day and night, so take care of your health.
Fine dust levels will be at a "good" level nationwide thanks to smooth atmospheric dispersion.
Until morning, dense fog with visibility under 200 meters will form mainly in inland parts of the Chungcheong region and the southern inland.
On Jeju Island, along the east coast, and on the south coast of the Gyeongsangnam-do region, winds will blow strong in places at around 15 meters per second in gusts (around 20 meters per second in mountainous areas of Jeju).
Waves will run 1.0–3.5 meters on the east coast's nearshore waters, 0.5–2.0 meters on the west coast's nearshore waters, and 0.5–2.5 meters on the south coast's nearshore waters.
In the inner offshore waters (farther seas within about 200 km of the coastline), wave heights are forecast at 1.0–3.5 meters in the East Sea, 0.5–2.5 meters in the West Sea, and 0.5–3.5 meters in the South Sea.