Winter in Japan brings bright, clear skies and crisp city days in places like Tokyo and Osaka, where the streets stay walkable without needing detachable spikes on your boots.
However, head north to Hokkaido or into the Japanese Alps and you'll be welcomed with deep powder snow, where the piles can be taller than you are, often more than 3 metres. It's easy to combine the two, pairing walkable cities with a few days of snow, skiing, or onsen towns.