Early October to Late November
Chubu
Niigata, Toyama, Ishikawa, Gifu
Nagano, Yamanashi, Shizuoka, Aichi
I recommend visiting places like Lake Kawaguchi near Mount Fuji, Kenrokuen Garden in Kanazawa, the lesser-known Hōrankei Valley, and taking a scenic train ride through the Kurobe Gorge to enjoy the beautiful autumn foliage.