Typhoon No. 6 is forecast to strike Okinawa and the Amami Islands on June 1, 2026, bringing very strong winds and heavy rain [1].
The storm's path poses a significant risk to southern Japan and may cause widespread disruption as it moves northward toward the Kanto region. Meteorologists are monitoring the interaction between the typhoon and a northern frontal system, which could amplify the storm's intensity.
Okinawa is expecting maximum instantaneous wind speeds of 50 m/s [1], while the Amami Islands may see gusts reaching 45 m/s [1]. Heavy rainfall is anticipated to begin on the evening of June 1, with forecasts predicting 300 mm for Amami and southern Kyushu [1].
The system is projected to move northward across Kyushu, Shikoku, Chūgoku, Kinki, Tokai, and Kanto regions between June 2 and June 3, 2026 [1, 2]. The peak period for heavy rain in Kyushu, Shikoku, and Chūgoku is expected on the afternoon of June 2 [1]. For the Kinki, Tokai, and Kanto regions, the peak rain is forecast for the morning of June 3 [1].
Rainfall estimates vary by region and terrain. Forecasts indicate 300 mm for Kinki and Tokai on the evening of June 2, and 200 mm for Shikoku and Kanto during the same period [1]. However, some mountainous areas could see rainfall exceeding 400 mm over a 48-hour window [3].
Tokuda Rumi of tenki.jp said that typhoons approaching in June are generally rare. She said that because there is a front to the north, the typhoon sends warm, moist air inward, which increases rainfall primarily on the southern slopes of the Pacific side [3].
“Typhoon No. 6 is forecast to strike Okinawa and the Amami Islands on June 1, 2026”
The convergence of Typhoon No. 6 with an existing northern frontal system creates a high-risk weather pattern. By funneling warm, moist air into the Pacific side of Japan, the storm increases the likelihood of flash flooding and landslides, particularly in mountainous regions where rainfall may exceed standard regional forecasts.
