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Koenji

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Koenji Weather, Climate and Best Time to Visit

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

12/9
Tuesday
Partly Cloudy
52.4°F/48.2°F
12/10
Wednesday
Sunny
54.6°F/46.4°F
12/11
Thursday
Overcast
57.3°F/48°F
12/12
Friday
Sunny
48°F/41.4°F
12/13
Saturday
Partly Cloudy
47.3°F/40°F
12/14
Sunday
Patchy rain nearby
54.4°F/42.9°F
12/15
Monday
Sunny
54.8°F/48.4°F