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Koenji

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Koenji Weather and climate

Data source:Meteostat
Update date:2025-09

Koenji year round climate
  • Spring (March–May): Average 51–66°F, mild and comfortable, but with relatively high rainfall; check the weather forecast. Common activities: enjoying nature, viewing flowers (such as cherry blossoms and other spring flowers), visiting museums. Recommended clothing: light jacket, long-sleeved shirt, comfortable walking shoes.
  • Summer (June–August): Average 73–83°F, hot and humid, with relatively high rainfall and occasional typhoons. Common activities: relaxing by the river, indoor activities (such as shopping, watching movies), enjoying shaved ice and other summer treats. Recommended clothing: light and breathable clothing, hat, sunscreen.
  • Autumn (September–November): Average 57–78°F, pleasant and cool, with decreasing rainfall. Common activities: viewing autumn leaves, outdoor excursions, participating in local festivals. Recommended clothing: light jacket, long-sleeved shirt or sweater.
  • Winter (December–February): Average 42–46°F, cold and dry, with the least rainfall. Common activities: enjoying hot springs, indoor activities, visiting art museums, etc. Recommended clothing: warm coat, sweater, scarf, gloves, hat.
Koenji climatological average

Annual average temperature: approx. 62.6°F / Annual rainfall: approx. 1648 mm / Summer humidity: 70%–80% / Rainiest month: June

Koenji monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
42.6°F
25
February
44.2°F
63.7
March
52°F
148.3
April
61.2°F
143.7
May
66.7°F
186.3
June
73.6°F
253.7
July
82.9°F
156.7
August
83.5°F
206.3
September
78.6°F
217
October
66°F
146.7
November
57.6°F
75.7
December
46.9°F
25.8
Koenji weather for the next seven days
10/21
Tuesday
Patchy rain nearby
60.2°F/57.7°F
10/22
Wednesday
Heavy rain
54.2°F/52.1°F
10/23
Thursday
Sunny
65.2°F/54°F
10/24
Friday
Sunny
67.9°F/56.6°F
10/25
Saturday
Overcast
64°F/59.6°F
10/26
Sunday
Patchy rain nearby
64.8°F/61.2°F
10/27
Monday
Patchy rain nearby
67.4°F/63.3°F