In general Japan is a rainy and highly humid country. Japan has very varied climate temperatures owing to its extended geographic location. Japan’s long latitudinal shape experiences similar climate conditions to the eastern United States. Japan too has four distinct seasons throughout the year: spring, summer, autumn/fall, and winter.
Japan allows most country’s nationals access within its borders for the purpose of a short-term trip.
The only information you must provide is your passport and your return ticket voucher.
The only reasons for a visa requirement are visits to reside in Japan, to obtain employment or to otherwise engage in remunerative activities.