Central Tokyo marked 34 consecutive rainy days as of 29 September 2026. This is the longest period since observations began in 1886, the Japan Meteorological Agency reports.
The previous record — 33 days — was set in June-July 2019. The current streak began on 27 August, when 5 mm of precipitation fell in the Chiyoda area.
Observations are conducted at a station in Kitanomaru Park. Even days with less than 0,5 mm of precipitation count — there were ten such days during the period.
The situation was worsened by two typhoons. Typhoon Krovаn brought more than 150 mm between 6 and 7 September, while Typhoon Dujuang brought 156 mm on 21 September. The latter caused floods and landslides in the Kanto region, claimed at least ten lives and caused serious damage to infrastructure and agriculture.
In September alone, about 629 mm of precipitation has already fallen in central Tokyo — nearly three times the norm and close to the historical maximum. The total precipitation for the year by 28 September reached 1949,5 mm.
There was extremely little sunlight in September — less than 40 % of the usual. This adds to concerns about rising food prices and slows crop growth ahead of the autumn harvest.
The rainy weather, caused by a stationary front and the influence of typhoons, has affected more than just Tokyo. How long this will last will be shown by the coming days.
Meteorologists expect precipitation to continue in eastern Japan at least until Thursday due to an autumn front.
