Kushiro experiences a cold and snowy winter with temperatures often dropping below -18°C in January, but gradually warming up by February. Spring brings moderate temperatures, ranging from 2°C to 16°C, with March being the mildest month of the season. Summer is warm, with July being the hottest month, averaging around 19°C, while autumn sees a return to cooler temperatures, often dipping below 0°C in October and November before warming up again by December.