Daejeon belongs to the Far East of the northern hemisphere and the central area of the Korean Peninsula. The city is 167.3km south of Seoul and is 238.2km away from Busan. Gyeryong Mountain straddles the border between Gongju and Daejeon ,while Daecheong Dam is the border between Cheongju city and Daejeon. Daejeon is ringed by Shikjang Mountain in the east, Gubong Mountain in the west, Bomun Mountain in the south and Gyejok Mountain in the north. During the period from 1981 to 2010, Daejeon’s yearly temperature averaged 13.0℃.
In Daejeon, August is the hottest month with an average temperature of 25.6℃, while it is coldest in January, when the temperature averages -1.0℃. So the biggest temperature gap is 26.6℃. It is hot in the summer and cold in the winter in Daejeon, showing a continental climate. The highest and lowest temperatures recorded during this period were 37.7℃ (July 24, 1994) and -19.0℃ (February 6, 1969). Its average annual rainfall is 1,458.7mm. The city receives 50% to 60% of its annual rainfall in the summer and 5% to 10% in the winter. The heaviest daily rainfall was recorded on July 22, 1987, when it hit 303.3mm.
Generally, the monsoon from the northwest gets the better of the monsoon from the southwest. In particular, the city receives monsoons from the northwest in the winter, and has the largest amount of clouds in July and the smallest amount of clouds in October. Daejeon recorded its first frost on October 24, its first freeze on October 31 and its first snow on november 19.