On Tuesday, the 5th, rain showers are expected in most parts of the country at times. The southern coast of Jeolla and the Gyeongsang regions, as well as Jeju Island, are forecasted to see rain until dawn, with the mountainous areas of Jeju Island expecting showers until the afternoon. The inland and mountainous areas of Gangwon, as well as the inland regions of Chungcheong and southern regions, are also likely to experience rain showers from the morning until nighttime.
The expected cumulative rainfall over the two days from the 4th to the 5th is 10 to 60 millimeters in the Gyeongsang region and mountainous areas of Jeju Island, 5 to 40 millimeters on the southern coast of Jeolla, 5 to 30 millimeters in Gwangju and Jeolla, and 5 to 20 millimeters in Jeju Island excluding the mountainous areas. In Daegu and North Gyeongsang, more than 80 millimeters of rain is forecasted. The expected rainfall from showers is 5 to 40 millimeters in the Jeolla and Gyeongsang regions, and 5 to 30 millimeters in inland and mountainous areas of Gangwon and Chungcheong.
The morning low temperature is expected to be between 23 and 27 degrees Celsius, while the afternoon high temperature is likely to be between 30 and 36 degrees Celsius, which is similar to or slightly higher than average. After the rain and showers ease or stop, temperatures are expected to rise during the day, and the maximum perceived temperature could reach around 33 degrees. Some areas in northern Gyeonggi and along the southern coast of Jeolla and the Gyeongsang region may experience feels-like temperatures approaching 35 degrees.
During the day, Seoul is expected to hit 33 degrees Celsius and Daegu 35 degrees Celsius, making it as hot as today. The heat generated during the day may linger into the night, leading to tropical nights in some areas.
The concentration of fine dust is anticipated to be at a 'good' level nationwide, due to smooth atmospheric dispersion and rainfall.
The sea waves are forecasted to be 0.5 to 3.0 meters in the East Sea and South Sea, and 0.5 to 1.5 meters in the West Sea. The offshore wave heights (about 200 kilometers from the coastline) are expected to be 0.5 to 3.5 meters in the East Sea, 0.5 to 2.0 meters in the West Sea, and 1.0 to 3.5 meters in the South Sea.
For the time being, strong swells are expected to enter the southern coast and Jeju Island, leading to high waves that may surpass tidal flats, breakwaters, and coastal roads, so caution is advised for safety.