Winters in Kiryu are cold and variable, with temperatures often dropping below freezing but occasionally rising into the mid-teens. Spring brings mild temperatures, gradually warming up from around 2-26°C in April to a more consistent range of 15-32°C in May and June. Summers are hot and humid, with temperatures frequently reaching above 30°C and sometimes exceeding 35°C. Autumn is generally cooler, with temperatures returning to a more moderate range, although there can still be some warm days in September and October. Frosts return in winter, bringing chilly temperatures that can drop below -7°C.