Tokyo Sees 34 Consecutive Days of Rain...Longest Streak in 139 Years

Rain Every Day Since August 27 Due to Typhoons and Autumn Rain Fronts

September Cumulative Precipitation Reaches 629 mm—Three Times the Monthly Average

In Tokyo, Japan, it rained for 34 consecutive days as of September 29, setting a new all-time record since statistics began being compiled.

Rainy streets of Tokyo. Photo by Getty Images Korea

According to Kyodo News and other Japanese media outlets, rainfall was observed in central Tokyo every day since August 27, due to successive typhoons approaching, the lingering autumn rain fronts, and the influence of troughs of low pressure. This marks the longest streak since records began in 1886. The previous record was 33 consecutive days, from June 27 to July 29, 2019.

The day with the heaviest rainfall during the 34-day span was September 21, when the daily precipitation reached 156 mm. From September 1 to the day before September 28, the cumulative precipitation totaled 629 mm, nearly three times the usual amount for the entire month of September. The rain is expected to continue until around October 1.

Meanwhile, the Japan Meteorological Agency announced that Typhoon No. 26, Koinu, is moving eastward over the waters south of Japan and is expected to change course northward, possibly approaching the waters near Kanto—including areas such as Tokyo and the Izu Islands—around October 1. Afterward, it is projected to turn into an extratropical cyclone over the far eastern seas of Japan on October 2.

This content was produced with the assistance of AI translation services.