In the southernmost cities, such as Mokpo and Busan (or Pusan), the climate is much milder, and the average temperature in January goes up to around 3 °C (37.5 °F). However, during cold spells, the temperature can drop to -20 °C (-4 °F) in Seoul and in northern inland areas and to around -10 °C (14 °F) in the south, while it only drops a ...