Weather
The temperature varies widely over the country on any given day—annual average temperatures range from 43 F/6 C to 72 F/22 C, depending on where you are. In general, the best times to visit are in October and April, when the foliage is changing and the temperatures are mild during the day and cool at night. May, June and July are the rainiest months, and June, July and August are hotter and more humid.
Winter months can become quite cold—parts of Japan are on the same latitude as Siberia—and the areas that aren't terribly cold most likely will be drizzly and dreary.