| Japan's temperatures are gradually warmer in the south and cooler in the north. The average summer day is about 28°C (83°F) around the southern islands and only 23°C (73°F) near the northern island of Hokkaido. Most of the year, the climate is moderate, but in winter it's cold throughout most of the country with the exception of southern Kyushu and Shikoku. Rainfall varies across the nation but is quite regular the year round and usually just a bit heavier during the June rainy season (which misses Hokkaido). Check out today's weather in Japan from Weather Underground |