On Thursday the 16th, the heat will continue nationwide, with the highest apparent temperatures rising to around 31 degrees.
In the morning, hot, moisture-laden air will flow in, bringing the monsoon rain to areas south of Chungcheong, starting with Honam and Jeju.
After that, the rain will expand to the southern Chungcheong and western inland of South Gyeongsang at night and continue nationwide through the 19th. Precipitation is expected in central regions through the 20th.
The forecast rainfall for the two days from the 16th to the 17th is ▲ North Jeolla ▲ Gwangju ▲ South Jeolla ▲ Busan ▲ Ulsan ▲ South Gyeongsang 30–80 mm, ▲ Daejeon ▲ southern South Chungcheong ▲ southern North Chungcheong ▲ Daegu ▲ North Gyeongsang 20–60 mm, ▲ Jeju 5–30 mm.
As the rain falls, some heat advisories will be lifted or eased and the intensity of the heat will weaken somewhat, but with humidity remaining, the apparent temperature will stay high.
Many areas will also see tropical nights, with temperatures not falling below 25 degrees even at night.
Nationwide, the morning low will be 20–26 degrees, and the daytime high will be 28–37 degrees. Fine dust levels will be at "good" to "moderate" across all regions.
On the coasts of ▲ Jeju ▲ South Jeolla ▲ South Gyeongsang, swells will move in through the 16th, and the moon's gravitational pull will be strong through the 17th, making sea levels higher than usual.
In particular, from the night of the 15th to the early morning of the 16th during high tide, sea levels will rise further on the coasts of ▲ Incheon ▲ the west coast of Gyeonggi ▲ Jeolla, and storm surges may strike, so preparations are needed.