Kyūshū’s leaves start turning colour usually around early October. However, one of the nicer (and quieter) places to visit, Akizuki Castle, is usually later and the height of its autumn leaves is around late November.
Akizuki Castle Ruins
Address: Akizukinotori, Asakura City
Best viewing time: Late November
Image courtesy of fukuoka-now.com
For more suggestions of autumn leaves viewing, check http://fukuoka-now.com/2013/09/koyo-in-fukuoka-2013/