Commonly used acronyms and what they stand for: 1  ADA - Americans with Disabilities Act of 1990, Pub. 2  AD&D - Accidental Death and Dismemberment. 3  ADEA - Age Discrimination in Employment Act of 1967, Pub. 4  CFR - Code of Federal Regulations. 5  CMS - Centers for Medicare & Medicaid Services.
The best time to visit Tokyo is March, April, October, and November. The weather is nearly perfect, the summer rains and heat have passed, and sightseeing is at its best. Best Time for Good Weather: Late March to May and October to early December. Best Time for Sightseeing: Late March, April, October, and November.
The weather in Tokyo in December will be from 0ï½10 degree, pretty cold but rarely snow. However, you might get hot if you walk inside building, underground paths or public transport, which is most of the time in Tokyo. Therefore, if you wear many layers it might become annoying.