On Sunday the 31st, most of the country will be mostly clear, with daytime highs rising to around 30 degrees Celsius, bringing early-summer heat.
According to the Korea Meteorological Administration on the 30th, tomorrow's morning lows are forecast at 13–23 degrees Celsius, with daytime highs at 27–33 degrees.
Daytime highs in major areas will be 30 degrees in Seoul, 27 in Incheon, 29 in Suwon, 30 in Chuncheon, 33 in Gangneung, 31 in Cheongju, 31 in Daejeon, 31 in Jeonju, 32 in Gwangju, 32 in Daegu, 30 in Busan, and 27 on Jeju.
Along the Gangwon East Coast, the South Jeolla coast, and the Gyeongsang region, the heat index is expected to rise to around 31 degrees, so caution is advised for heat-related illness.
From dawn to morning, some areas centered on Incheon-Gyeonggi, South Chungcheong, and the Jeolla region will see fog reducing visibility to less than 1 kilometer, so motorists should use caution.
Waves will run 0.5–1.5 meters off the East Sea, 0.5 meters off the West Sea, and 0.5–1.0 meters off the South Sea. In the inner offshore waters (far seas within about 200 kilometers of the coastline), wave heights are expected at 0.5–1.5 meters in the East Sea and 0.5–1.0 meters in the West and South Seas.