Nanao, Japan experiences a temperate climate with distinct seasonal changes. Winters are cold and unpredictable, with temperatures often fluctuating between -7°C and 15°C, resulting in occasional frosty days amidst mild ones. As spring arrives, temperatures gradually rise, reaching averages of around 12°C by April, and further warming to 17°C by May. Summer brings warmth and humidity, with temperatures frequently exceeding 30°C from June to August. Autumn sees a cooling trend, with temperatures returning to averages of around 11°C by November, before the cycle begins anew in winter.