On Saturday, September 19, the weather across the country is expected to be mostly clear, making it a great day for outings and outdoor activities. However, significant temperature differences of 10 to 15 degrees Celsius are anticipated between day and night, particularly in inland areas. Some regions along the eastern coast of Gangwon and Gyeongsang, as well as parts of Jeju Island, may experience rain.
According to the Korea Meteorological Administration on September 18, the country will be under the influence of a high-pressure system moving northeast over the East Sea, resulting in generally clear skies.
Morning low temperatures are forecasted to range from 15 to 22 degrees Celsius, while daytime highs are expected to reach between 24 and 30 degrees, which is similar to or slightly above the seasonal averages of 13 to 20 degrees for lows and 24 to 28 degrees for highs.
In terms of regional highs, Seoul, Suwon, and Jeonju are expected to hit 29 degrees, while Daejeon and Cheongju will see highs of 28 degrees, particularly in the western regions where temperatures will rise significantly.
With good atmospheric dispersion, fine dust levels are expected to be at 'good' levels across all regions, and the nationwide UV index is forecasted to be at 'moderate' to 'high' levels.
While the rest of the country enjoys clear weather, the eastern coast and mountainous areas of Gangwon, as well as the eastern coast of Gyeongsang and parts of Jeju Island, will experience cloudy conditions until the morning.
Rain is expected from early morning until the morning hours in the eastern coastal areas of North Gyeongsang and northeastern mountainous regions, as well as in the mountainous and midland areas of Jeju Island. Ulsan is also forecasted to see rain from early morning through the day.
Expected rainfall amounts from September 18 to 19 are as follows: Jeju Island 5 to 20 mm, Gangwon mountainous areas 5 to 10 mm, Gangwon eastern coast less than 5 mm, northern coastal areas of North Gyeongsang and northeastern mountainous regions less than 5 mm, and Ulsan and southern coastal areas of North Gyeongsang (on September 19) less than 5 mm. Some areas in Busan and eastern inland regions of Gyeongnam may see less than 0.1 mm of rain.
Strong winds are expected along the coast. A strong wind advisory is in effect for parts of Jeju Island, the southern coast of Jeollanam-do, and the western southern coast of Gyeongsang, where wind gusts may exceed 20 m/s (25 m/s in the mountainous areas of Jeju) until September 19. Particularly, the eastern part of Jeju Island will experience strong winds from September 18 through the morning of September 19.
In the southern offshore waters and the northern and western waters off Jeju Island, strong waves are anticipated. The Korea Meteorological Administration advises vessels engaged in navigation or fishing to exercise caution.
* This article has been translated by AI.
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