Nakagawa experiences a temperate climate with distinct seasonal changes. Winters are cool, with temperatures ranging from freezing to mild, averaging around 6-9°C in January and February. As spring arrives, temperatures gradually warm up, reaching an average of 13-16°C by March and April. Summers are hot and humid, with temperatures often soaring above 30°C, peaking at 36°C in July and August. Autumn brings a welcome respite from the heat, with temperatures cooling down to around 8-17°C by September and October, before returning to cooler winter conditions.