Tokyo records longest period of precipitation in at least 150 years
- Tokyo has broken a weather record spanning at least 150 years, recording 34 days of observed rain stretching back to August 27, 2026.
- Government meteorological record-keeping of this type in Japan began in 1876, meaning the current streak stands as the longest continuous period of recorded precipitation in Tokyo's modern history.
- Japan typically experiences its heaviest rainfall during the rainy season of late June and July.
Tokyo has broken a weather record spanning at least 150 years, recording 34 days of observed rain stretching back to August 27, 2026. Weather News reports that the Japanese capital has not experienced a completely dry day since August 26, surpassing the previous record of 33 rainy days set between June 27 and July 29, 2019.
A Century-and-a-Half Record for Tokyo Precipitation
Government meteorological record-keeping of this type in Japan began in 1876, meaning the current streak stands as the longest continuous period of recorded precipitation in Tokyo’s modern history. Weather News notes that Emperor Meiji was the last ruler of Japan who may have potentially witnessed a comparable rainy stretch in the capital. The current persistent wet weather clears the previous record of 33 days established during the summer of 2019.
Lingering Typhoons Drive Unseasonal Weather Pattern
Japan typically experiences its heaviest rainfall during the rainy season of late June and July. While late summer and early September frequently bring typhoons, these storms are usually punctuated by clear skies as they lose strength passing over the main island of Honshu. Weather News explains that this year has deviated from that pattern because Typhoons 24 and 25, also identified as Tropical Storm Krovanh and Typhoon Dujuan, lingered near the country throughout September. Although Typhoon 26 is not projected to make direct landfall in Japan, its associated rain front has sustained the wet conditions through the week.
Sunlight Deficits and the Forecasted Break
While the 34-day streak does not involve continuous, unceasing downpours across the entirety of the city, meteorologists report that Tokyo has received only about 40 percent of its typical September sunlight in 2026. Relief is currently on the horizon. Current forecasts from Weather News indicate that Tokyo will return to sunny skies with some late afternoon clouds on October 1, provided that Typhoon 26 does not shift closer to the capital as it tracks eastward.