On Tuesday the 16th, heavy showers are forecast for most regions nationwide in the early morning. The daytime high will rise to 33 degrees Celsius, with the sweltering weather expected to continue.

On the 25th of last month, tourists visiting Gyeongbokgung in Jongno-gu, Seoul, walk under umbrellas as a sudden shower falls. /Courtesy of News1

According to the Korea meteorological Administration (KMA), from the late pre-dawn hours to the evening, very heavy showers accompanied by gusty winds, thunder and lightning will fall over most regions nationwide.

Expected rainfall from the showers is 5–60 millimeters for the Seoul metropolitan area and Daejeon, Sejong and South Chungcheong, and the Jeolla region; and 5–40 millimeters for inland and mountainous Gangwon, North Chungcheong, the Gyeongsang region and Jeju Island. For Jeju Island, showers of up to more than 60 millimeters are forecast.

Inland central regions except the east coast of Gangwon and northern North Jeolla will see occasional rain in places from late night.

From this day through the 17th, the two-day total expected precipitation is 20–60 millimeters for the Seoul metropolitan area and inland and mountainous Gangwon; 10–60 millimeters for the Chungcheong region and North Jeolla; 10–40 millimeters for the northern east coast of Gangwon and North Chungcheong; and 5–20 millimeters for the central and southern east coast of Gangwon. In northern and eastern Gyeonggi and the northern inland mountains of Gangwon, rainfall may reach 80 millimeters or more.

Centered on the southern regions, the maximum heat index will rise to around 33 degrees Celsius, and the sweltering weather is expected to continue. Heat advisories have been issued for the South Jeolla south coast, the South Gyeongsang region and coastal Jeju Island.

Fine dust levels are expected to be in the "good" to "moderate" range nationwide due to smooth atmospheric dispersion and the effects of precipitation.

Waves will run 0.5–1.0 meters off the east and south coasts and 0.5–1.5 meters off the west coast.

In the inner offshore waters (distant seas within about 200 kilometers from the coastline), wave heights are forecast at 0.5–1.5 meters in the East Sea and South Sea, and 0.5–2.0 meters in the West Sea.

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