Sunday, the 12th, will be very hot with a heat wave warning in effect for most of the country, with the maximum perceived temperature rising to around 33 degrees. There will be showers mainly in the inland, and there will be rain in parts of the south and Jeju Island. In the forecast on the 11th, the Korea Meteorological Administration said, “The highest perceived temperature will be around 33 degrees, and it will be very hot in the metropolitan area, Chungcheong area, and southern regions, rising to around 35 degrees,” and “There will be places where tropical nights with temperatures above 25 degrees will appear at night.” In the southern coast of Jeollanam-do and western Gyeongnam, from morning to night. 5 to 20 mm of rain will fall, and rain will continue on Jeju Island. The expected precipitation on Jeju Island is 30-80 mm in the mountainous areas, and 5-30 mm in areas excluding the mountainous areas. In the afternoon, there may be showers of 5-40 mm mainly in the eastern part of Gyeonggi-do, the inland and mountainous areas of Gangwon, Daejeon, Sejong, eastern Chungcheongnam-do, North Chungcheong Province, and eastern Jeollabuk-do. In areas where rain or showers fall, there may be gusts of wind, thunder, and lightning, and the roads are slippery. Visibility is shortened, so be careful about traffic safety. The lowest temperature in the morning is 23 to 26 degrees, and the highest temperature during the day is 23 to 26 degrees.