Despite its small size, Japan has a variable climate.
Tokyo has a climate similar to New York City. Summers (June to August) are hot and humid, while winters (December to February) are freezing and snowy. Tokyo's weather is best in spring and autumn, as both seasons offer a respite from the extremes of summer and winter.
The weather in Osaka is more temperate. Winters are pretty mild, with highs above 50°F (10°C). Snowfall is rare and usually light. On the other hand, summers can be hot, moist, and rainy. Temperatures can get as high as 95°F (35°C) with very high humidity. Rainfall is also abundant in Osaka.
Sapporo has a humid continental climate – hot and wet summers and chilly, snowy winters ideal for skiing. A former Winter Olympic Games city, it can get up to 72 inches (1,829mm) of snow in January alone.