[Tomorrow's Weather] Most Regions Nationwide Face Heatwave... Jeju Experiences Heavy Monsoon Rain

Around 33°C in the Central Region during the Day
Southern Region Also Above 30°C

On the 21st, the summer solstice (夏至), when the day is longest throughout the year, the nationwide daytime high temperature will rise to around 30 degrees Celsius, making it very hot.

According to the Korea Meteorological Administration on the 20th, the morning low temperature on the 21st is forecasted to be between 17 and 23 degrees Celsius, and the daytime high temperature between 25 and 33 degrees Celsius. In the central region and Jeonbuk, where heatwave warnings have been issued, many places will see daytime temperatures rise to around 33 degrees Celsius, and other southern regions will also see temperatures around 30 degrees Celsius.

The expected low and high temperatures in major cities are Seoul 23°C and 33°C, Incheon 22°C and 30°C, Daejeon 20°C and 31°C, Gwangju 21°C and 30°C, Daegu 21°C and 31°C, Ulsan 20°C and 27°C, and Busan 21°C and 27°C. In areas under heatwave warnings, the highest apparent temperature will rise to around 33 degrees Celsius, increasing the risk of heat-related illnesses, so outdoor activities and outings should be avoided.

On the 19th, when a heatwave advisory was issued for the central region including Seoul and Gyeonggi, the daytime temperature in Seoul rose to 35 degrees Celsius. Children visiting the fountain at Gwanghwamun Square are cooling off by playing in the water. Photo by Jo Yongjun jun21@

The central region will have occasional clouds, while the southern region and Jeju Island are expected to be mostly cloudy. The rainy season rain that began on the night before will continue in Jeju until the morning of the 21st. The expected rainfall during this period is 50 to 100 mm (with some areas receiving over 150 mm, and mountainous areas over 200 mm).

Fine dust levels will be 'good' to 'moderate' nationwide due to smooth atmospheric dispersion.

Sea waves are expected to be 0.5 to 1.5 meters in all coastal waters including the East Sea, West Sea, and South Sea. Wave heights in the offshore waters (about 200 km from the coastline) are predicted to be 0.5 to 2 meters in the East Sea, 0.5 to 1.5 meters in the West Sea, and 0.5 to 2.5 meters in the South Sea.