Severe Tropical Storm Nanmadol is disrupting Shinkansen bullet train services.
The Japan Railways group says the Kyushu Shinkansen line is out of service throughout Monday.
Operations are due to return to normal on Tuesday.
Services on the Sanyo Shinkansen line are halted between Hakata and Hiroshima throughout the day.
Services between Hiroshima and Shin-Osaka have been reduced significantly.
West Japan Railway Company says it plans to resume normal service on Tuesday, but delays and destination changes are possible, depending on the weather.
Services on the Tokaido Shinkansen line have been halted between Shin-Osaka and Nagoya.
The number of trains is significantly reduced between Nagoya and Tokyo.
Central Japan Railway Company says services could be suspended or destinations could be changed from the start of service to around 9 a.m. Tuesday.
The operators of the Tohoku and Hokuriku Shinkansen lines have no plans to suspend services on Monday, but delays or cancelations cannot be ruled out.