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.
Tokyo has pleasant weather in April but is chilly at night. The city has dozens of excellent cherry blossom spots that bloom until mid April. Different varieties of sakura trees are planted around the city that peak at different times making the season fairly long.