On Monday, the 21st, most areas nationwide, except for Jeju Island, will be clear, but there will be a significant temperature difference, with the daily temperature range reaching around 20 degrees, mainly in inland and mountainous areas. On Tuesday, the 22nd, rain is expected in most parts of the country, starting with the metropolitan area and the regions of Chungcheong, Jeolla, and western Gyeongnam in the early morning.
According to the Korea Meteorological Administration, the morning low temperature on the 21st is expected to be between 7 and 16 degrees, while the daily high temperature is projected to be between 18 and 27 degrees, which is higher than the average year. In some areas such as inland Gangwon and northern inland Gyeongbuk, the temperature difference between day and night will widen to around 20 degrees.
Until the evening of the 20th, there may be raindrops of less than 0.1 mm in the southern coast of Jeonnam and Gyeongnam regions, and in the early morning of the 21st, less than 5 mm of rain is forecasted in some areas of Jeju.
On the 22nd, rain will fall in most parts of the country, but it is expected to gradually stop from the western areas that night. However, in the Gangwon Yeongdong region, rain may continue until the early morning of the 23rd. The expected precipitation is between 10 and 40 mm in the metropolitan area, Gangwon, and Chungcheong; between 10 and 60 mm in Jeolla and Gyeongsang; over 80 mm in the southern coast of Jeonnam, Gyeongnam, and near Jirisan; and 30 to 80 mm in Jeju.
In the southern regions and Jeju, there may be strong winds accompanied by thunder and lightning, and in most areas, strong winds are expected at a momentary speed of around 55 km/h (15 m/s).
In the early morning of the 21st, visibility of less than 1 km due to fog may occur inland nationwide, and until the 22nd, sea fog is expected to blanket most maritime regions. Additionally, on the 22nd, strong winds are expected to blow across the seas at speeds of 30 to 60 km/h (9 to 16 m/s), and waves are projected to be high at 1.5 to 4.0 meters, necessitating special attention to maritime safety.