Weather In Japan In March 2025. The average temperature ranges from cold in the north to relatively mild in the south, making it ideal for winter sports enthusiasts and those seeking warmer escapes. For the nation, the average temperature highs range from 5°c in northern islands like hokkaido to 14°c in central and 21°c in southern islands such as kyushu and honshu.
The weather remains pleasant, and you can explore various cultural festivals and events. Daytime maximum temperatures average around a cool 13°c (55°f), whilst at night 4°c (39°f) is normal.