Japan has four distinct seasons. Summer is hot and humid. Temperatures range from 68 degrees to the low 90s depending on the city and in the winter the temperatures drop to 30 to 48 degrees in the north and they are about 2 to 7 degrees lower in the South.
It snows on the Sea of Japan side and is very dry on the Pacific side.
The rainy season arrives in June and July and lasts for around 40 days. August through October is Typhoon season, so a good time to travel in Japan is in Mid-April, when the Cherry trees are in bloom.
The month of May is another perfect time to enjoy the beauty of the islands. November is also a good month; there’s not much rain and the temperatures are usually mild.