Kusatsu experiences a continental climate with significant seasonal variations. Winter, from January to March, is chilly and snowy, with temperatures often below freezing, but gradually warming up as the season progresses. Spring, from April to May, brings mild and pleasant weather, with temperatures rising rapidly. Summer, from June to August, is hot and humid, with temperatures frequently reaching over 30 degrees Celsius. Autumn, from September to November, sees a return to cooler temperatures, with crisp days and nights, before the cold winter sets in once more.