See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
23°
Light Rain and Humid
Feels Like: 25°
Min: 23°
Max: 27°
The next few hours will be overcast, with today reaching 27°C and dropping to 21°C. The coming days will be light rain throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:30
Sunrise
17:42
Sunset
Moon
Waxing Crescent
09:26
Moonrise
19:41
Moonset
Daily Forecast
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
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Humidity
Weather in Kokubunji today, September 15, 2026
Kokubunji looks damp on September 15, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Early hours look the most unsettled, with rain probability near 86% by 10:00. The thickest cloud arrives around 07:00, reaching about 100%.
The day peaks near 27°C and cools toward 23°C. Moisture in the air spans 76%-97%, with the highest values around 23:00. Airflow remains manageable, reaching about 2.2 km/h around 12:00.
Expect the wet theme to continue later, as rain odds reach 86% near 12:00. Cloud amounts hold near 100% around 12:00. Visibility stays generally good near 15.6 km on average, though it can drop toward 12.7 km in thicker cloud or showers. The sun rises at 05:30 and sets at 17:42, for a total of 12 hours 12 minutes of sunlight today.
The practical takeaway for Kokubunji on September 15, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 27°C.
Frequently asked questions about weather in Kokubunji
How warm does it get in Kokubunji?
The warmest month in Kokubunji is August, with average high temperatures of 32°C. The average temperature during this period is around 28°C.
How cold does it get in Kokubunji?
The coldest month in Kokubunji is January, with average low temperatures of 0°C. The average temperature during this period is around 4°C.
What is the wettest time of year in Kokubunji?
The wettest month in Kokubunji is October, with an average of 198mm of precipitation.
What is the driest time of year in Kokubunji?
The driest month in Kokubunji is December, with an average of 48mm of precipitation.
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