The best time to visit Japan is during spring (March to May) and autumn (September to November). This is when Japan is at its most vibrant, with delicate cherry blossoms or bright red leaves adding contrast to the scenery. Remember, it can also be very crowded at this time.
The summer months (June to August) offer ideal conditions for hikers and lovers of the outdoors, but only in the mountains of the Japanese Alps and Hokkaido’s wild national parks. Elsewhere, the weather is hot and humid. The rainy season occurs from the end of May until the middle of June or July.
For a very different experience, head to the north of Japan in winter (December to February). It’s snowy, but the people brighten the dark days with a variety of festivals and events.
It’s a good idea to take Japan’s national holidays into account, too. Shogatsu (Japanese New Year), Obon (in mid-August or mid-July, depending on the area), and the Golden Week (between April 29 and May 5) are busy times for residents.
AloJapan.com