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Hourly Forecast
Daylight Hours
05:30
Sunrise
17:41
Sunset
Moon
Waxing Crescent
10:28
Moonrise
20:17
Moonset
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Weather in Koganei today, September 16, 2026
Koganei starts September 16, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.
The day peaks near 23°C and cools toward 20°C. Relative humidity sits between 88% and 95%, reaching its peak around 18:00. A lighter breeze peaks around 15:00 near 2.6 km/h.
Afternoon showers stay in play, peaking near 100% around 15:00. Skies remain cluttered, with cover about 100% by 15:00. Visibility stays generally good near 7.5 km on average, though it can drop toward 4.5 km in thicker cloud or showers. Daylight runs from 05:30 to 17:41, lasting 12 hours 10 minutes of sunlight today.
Taken together, Koganei looks wet enough on September 16, 2026 that flexible outdoor plans work best, with temperatures peaking near 23°C.
Frequently asked questions about weather in Koganei
How warm does it get in Koganei?
The warmest month in Koganei 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 Koganei?
The coldest month in Koganei 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 Koganei?
The wettest month in Koganei is October, with an average of 198mm of precipitation.
What is the driest time of year in Koganei?
The driest month in Koganei is December, with an average of 48mm of precipitation.
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