The futuristic capital of Tokyo sits on Honshu island, Japan's largest. It's considered a year-round destination though there are definite benefits to visiting in the shoulder seasons of spring and autumn. Firstly, these periods experience less extreme weather conditions with generally mild temperatures. Secondly, there's the beautiful colours of cherry blossom and autumnal leaves to enjoy.
Summers in Tokyo can be hot and stick, with high humidity and a short rainy season between May and June, while winters are cold. That's why spring and autumn are considered the best time to visit.