The document discusses the climate of Japan. Japan has a variety of climates due to its latitude ranging from northern temperate to subtropical in the south. Two main factors influence Japan's climate: its proximity to Asia and ocean currents. In winter, high pressure systems form over Asia bringing cool northwest winds that pick up moisture from the warm Sea of Japan, leading to peak rainfall in Niigata. In summer, low pressure forms over Asia bringing warm southeast winds and peak rainfall to Tokyo.