Answer:
True!
Step-by-step explanation:
Northern Japan has warm summers and very cold winters with heavy snow on the Sea of Japan side and in mountainous areas.
Eastern Japan has hot and humid summers and cold winters with very heavy snow on the Sea of Japan side and in mountainous areas.
Western Japan has very hot and humid summers (with temperatures sometimes reaching 35C or above) and moderate cold winters.
Okinawa and Amami have a subtropical oceanic climate. These areas have hot and humid summers (with temperatures rarely reaching 35C or above) and mild winters.