On Tuesday the 15th, the country will be mostly sunny, but a large temperature swing between day and night is expected.
The southern region will see a lot of clouds, and the east coast and mountainous areas of Gangwon and the east coast of North and South Gyeongsang will be mostly overcast. Until the morning, there may be raindrops of less than 0.1 millimeter on the east coast and mountainous areas of Gangwon; in the morning on the east coast of North Gyeongsang; and in the afternoon in Busan. In the afternoon, less than 5 millimeters of rain will fall on the east coast of North Gyeongsang and in Ulsan.
Morning lows are forecast at 12–20 C, with afternoon highs at 24–29 C. Except for the east coast, most of the country will see a 10–15 C gap between daytime and nighttime temperatures, so dress accordingly for the large temperature swing. Fine dust levels are expected to be "good" nationwide.
Waves will run 0.5–1.5 meters off the east coast and 0.5–1.0 meters off the west and south coasts. In the inner offshore waters (the distant sea within about 200 kilometers of the coastline), wave heights are expected at 0.5–2.0 meters in the East and South Seas and 0.5–1.5 meters in the West Sea.