Typhoon season generally lasts from May to October, although typhoons may occasionally occur outside of this time period. In the south of Japan, Okinawa tends to experience more typhoons than the mainland. Northern regions of Japan such as Hokkaido tend to experience fewer typhoons.

In 2026, Japan’s "stormy" season remains traditionally tied to its monsoon and typhoon cycles, stretching primarily from May through October. The peak of the typhoon season occurs in August and September, when the atmospheric conditions in the Pacific are most conducive to powerful tropical cyclones. During these months, southern regions like Okinawa and Kyushu are frequently impacted by high winds and torrential rains, often leading to temporary disruptions in Shinkansen (bullet train) services and domestic flights. Additionally, the Tsuyu (plum rain) season brings a separate period of heavy, consistent gray skies and rainfall to central Japan, including Tokyo and Kyoto, typically from early June to mid-July. Travelers visiting in 2026 are advised to monitor the Japan Meteorological Agency (JMA) closely during these windows, as modern forecasting now provides highly accurate "early warning" alerts that help tourists adjust their itineraries to avoid the worst of the seasonal squalls.