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Weather by month

Arakawa Weather by Month

Average temperatures, rainfall and humidity for Arakawa, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Arakawa month looks like before you travel — then check the live Arakawa forecast for the days ahead.

Warmest month

August

32°C average high

Coolest month

January

2°C average low

Wettest month

June

162 mm of rain

Driest month

January

28 mm of rain

Average temperature and rainfall in Arakawa by month

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

Month	Avg high	Avg low	Record low / high	Rainfall	Humidity	Wind
January	10°C	2°C	-13°C / 18°C	28 mm	54%	12 km/h
February	11°C	3°C	-4°C / 23°C	47 mm	57%	13 km/h
March	15°C	7°C	-3°C / 28°C	86 mm	62%	13 km/h
April	19°C	12°C	1°C / 28°C	110 mm	65%	13 km/h
May	24°C	16°C	8°C / 33°C	109 mm	66%	12 km/h
June	27°C	20°C	13°C / 38°C	162 mm	69%	11 km/h
July	31°C	24°C	18°C / 39°C	117 mm	73%	11 km/h
August	32°C	26°C	18°C / 40°C	127 mm	71%	12 km/h
September	28°C	22°C	14°C / 37°C	141 mm	76%	12 km/h
October	22°C	16°C	5°C / 33°C	126 mm	72%	12 km/h
November	17°C	10°C	-1°C / 27°C	62 mm	63%	12 km/h
December	12°C	4°C	-6°C / 23°C	37 mm	55%	12 km/h

Best time to visit Arakawa

The most comfortable time to visit Arakawa is generally April to May 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 1,152 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 162 mm, roughly 6× the rainfall of the driest month (January).

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