Choosing between October and November in 2026 depends on whether you prioritize mild weather or peak autumn colors. October is widely considered the optimal "all-rounder" month. The weather is exceptionally pleasant, with temperatures ranging from 16°C to 22°C, lower humidity, and minimal rainfall. It is perfect for hiking in the Japanese Alps or exploring Tokyo without the heavy peak-season crowds. However, if your primary goal is the iconic fiery red maple leaves (momiji), late November is the superior choice for central Japan (Tokyo, Kyoto, and Osaka). By mid-to-late November, the temple gardens of Kyoto are at their most spectacular, though you must contend with significantly larger crowds and cooler temperatures (10°C to 16°C). For 2026 travelers, October offers a more relaxed pace and lower accommodation costs, while November provides the high-drama scenery that photographers crave, provided you book your Kyoto "entry time slots" well in advance to manage the seasonal surge.