Weatheo

Kokubunji weather by month

Warmest month

August

32°C average high

Coolest month

January

1°C average low

Wettest month

June

158 mm of rain

Driest month

January

22 mm of rain

Average temperature and rainfall in Kokubunji by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January9°C1°C-7°C / 16°C
22 mm
55%11 km/h
February11°C2°C-9°C / 20°C
34 mm
60%12 km/h
March14°C6°C-5°C / 24°C
89 mm
63%12 km/h
April19°C11°C4°C / 27°C
122 mm
65%14 km/h
May24°C16°C7°C / 31°C
104 mm
66%13 km/h
June26°C19°C12°C / 36°C
158 mm
76%10 km/h
July30°C23°C17°C / 37°C
112 mm
80%10 km/h
August32°C25°C18°C / 39°C
126 mm
74%12 km/h
September28°C21°C17°C / 34°C
158 mm
78%10 km/h
October21°C15°C4°C / 30°C
126 mm
78%10 km/h
November17°C9°C2°C / 24°C
65 mm
71%8 km/h
December12°C4°C-2°C / 21°C
37 mm
57%9 km/h

Frost and snow-likely months in Kokubunji

Nights in Kokubunji average 2°C or below in 2 months (January and February). No month combines freezing average lows with 10 mm or more of precipitation, so snow is uncommon. The coldest month is January with an average low of 1°C and a record low of -7°C.

  • January: average low 1°C, record low -7°C, 22 mm of precipitation
  • February: average low 2°C, record low -9°C, 34 mm of precipitation

These records carry temperature and precipitation, not snowfall totals.

Best time to visit Kokubunji

The most comfortable time to visit Kokubunji is generally May to June and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around June, totalling about 1,155 mm a year.

Travellers who prefer heat should aim for August, when highs average 32°C. June is the month to avoid if rain would spoil your plans — it averages 158 mm, roughly 7× the rainfall of the driest month (January).

Kokubunji climate: your questions

Is it going to snow in Kokubunji this year?

Rarely: nights dip to 2°C or below only in January and February, and the coldest month, January, averages a low of 1°C (record low -7°C), so snow is uncommon. Our records carry temperature and precipitation, not snowfall totals. What is falling now: Kokubunji weather today.

When is it going to snow in Kokubunji this month?

Kokubunji's winter months average lows of 4°C in December, 1°C in January and 2°C in February, with about 93 mm of precipitation across the three; 0 of them sit at or below 0°C, so snow is unlikely. The records hold no snowfall totals. The next 15 days: Kokubunji 10-day forecast.

Which months are best for visiting Kokubunji?

May to June and October are the most comfortable months in Kokubunji, with highs near 24°C. August is the warmest month, averaging 32°C by day; June is the wettest, with 158 mm; and January is the coolest, with lows near 1°C. What it is doing today: Kokubunji weather today.

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Kokubunji forecast for what is happening now.

Nearest cities: Monthly climate

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