Seoul Weather

Seoul has a humid continental climate influenced by the monsoons . Being in the extreme east Asia, the climate can be described as humid subtropical with great variation in temperature and precipitation throughout the year. (Cwa, by -3 °C isotherm). The suburbs of Seoul are generally cooler than the center of Seoul because of the urban heat island effect. Summers are hot and humid, with the East Asian monsoon taking place from June until September. August, the hottest month, has average high and low temperatures of 32.6 and 23.4 °C (91 and 74 °F) with higher temperatures possible. Heat index values can surpass 40 °C (104.0 °F) at the height of summer.
Winters are quite short but usually cold to freezing with average January high and low temperatures of 1.5 and −5.9 °C (34.7 and 21.4 °F), and are generally much drier than summers, with an average of 24.9 days of snow annually. Sometimes, temperatures drop dramatically to below −10 °C (14 °F), and on some occasions as low as −15 °C (5 °F) in the mid winter period of January and February. Temperatures below −20 °C (−4 °F) have been recorded.