Asan experiences a continental climate with distinct seasonal changes. Winters are cold and snowy, with temperatures often below freezing from January to March, averaging around -3°C to 8°C. Spring arrives in April, bringing mild temperatures ranging from -1°C to 29°C, as the region awakens from its winter slumber. Summers are warm and humid, with July being the hottest month, averaging 27°C, while autumn is relatively cool, with temperatures similar to spring, before dropping again into chilly winters.