On Sunday, the 3rd, the entire country is expected to be mostly cloudy with heavy rain accompanied by thunder and lightning.
The rain that began to fall in Jeollanam-do and Jeju Island that day expanded to Chungcheongnam-do and the western part of Gyeongsangnam-do in the afternoon and is expected to fall nationwide, except for the eastern coastline, starting from the night. The rain is expected to continue until the morning of the 5th.
From that day until the 5th, Gwangju, Jeollanam-do, Busan, Ulsan, and Gyeongsangnam-do are expected to receive 80 to 150 mm of rain, while the metropolitan area, Daejeon, Sejong, Chungcheongnam-do, Jeollabuk-do, and Jeju Island, excluding the northern and western regions, are expected to receive 50 to 100 mm of rain. Southern Gyeonggi, northeastern Gyeonggi, Daejeon, Sejong, Chungcheongnam-do, Jeollabuk-do, and Jeju Island, excluding mountainous areas, are expected to receive more than 150 mm, while the southern coast, near Jirisan, and the mountainous areas of Jeju Island are expected to receive more than 250 mm of rain.
In other areas, the expected rainfall is 30 to 80 mm for the inland and mountainous regions of Gangwon-do, Chungcheongbuk-do, Daegu, Gyeongsangbuk-do, and the five islands of the Yellow Sea. Some mountainous areas may see more than 100 mm. The northern and western parts of Jeju Island are expected to receive 20 to 80 mm.
As of 5 a.m. that day, the temperatures were 27.7 degrees in Seoul, 27.3 degrees in Incheon, 25.0 degrees in Suwon, 24.4 degrees in Chuncheon, 28.8 degrees in Gangneung, 28.7 degrees in Cheongju, 28.1 degrees in Daejeon, 27.5 degrees in Jeonju, 25.8 degrees in Gwangju, 28.1 degrees in Jeju, 27.4 degrees in Daegu, 27.8 degrees in Busan, 26.1 degrees in Ulsan, and 26.7 degrees in Changwon.
The highest daytime temperature is expected to be 29 to 34 degrees, similar to or slightly higher than the average year. If it rains, heat wave warnings may gradually be lifted in some areas.
The concentration of fine dust is expected to be at 'good' to 'moderate' levels nationwide. However, Incheon is expected to have 'bad' levels in the morning due to stagnant air from the previous day.
The sea waves will be 0.5 to 1.5 meters in the East Sea and the South Sea, and 0.5 to 3.0 meters in the West Sea. Offshore waves are expected to be 0.5 to 1.5 meters in the East Sea and 0.5 to 3.5 meters in the West Sea and South Sea.
On the night of that day, strong winds may blow at moments exceeding 20 m/s along the western coast of Jeolla. In addition, the western coast and Jeju Island may gradually experience strong winds of around 15 m/s. In the mountainous areas of Jeju, winds may blow at around 20 m/s.