Winters in Imizucho are harsh, with temperatures frequently dropping below freezing and averaging around 2°C in January, the coldest month. February's temperatures begin to rise, but still average a chilly 4°C. As spring approaches, temperatures gradually warm up, reaching an average of 9°C by March and 11°C by April, with occasional highs above 20°C. Summers are hot and humid, with July and August averaging around 26°C, though temperatures can soar above 35°C. In autumn, temperatures gradually cool down, returning to averages around 10-15°C by November, before dropping again in winter.