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Inzai Weather by Month

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

Warmest month

August

32°C average high

Coolest month

January

1°C average low

Wettest month

September

151 mm of rain

Driest month

January

28 mm of rain

Average temperature and rainfall in Inzai 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
January10°C1°C-9°C / 18°C
28 mm
59%11 km/h
February11°C3°C-5°C / 23°C
43 mm
61%12 km/h
March15°C7°C-3°C / 27°C
81 mm
65%13 km/h
April19°C11°C1°C / 29°C
103 mm
66%14 km/h
May24°C16°C5°C / 34°C
103 mm
70%13 km/h
June27°C20°C13°C / 38°C
146 mm
73%12 km/h
July31°C24°C18°C / 39°C
105 mm
75%12 km/h
August32°C25°C17°C / 40°C
120 mm
74%13 km/h
September28°C22°C8°C / 38°C
151 mm
77%13 km/h
October22°C15°C5°C / 32°C
114 mm
71%11 km/h
November17°C9°C-1°C / 27°C
60 mm
66%10 km/h
December12°C4°C-6°C / 23°C
36 mm
59%10 km/h

Best time to visit Inzai

The most comfortable time to visit Inzai 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 September, totalling about 1,090 mm a year.

Travellers who prefer heat should aim for August, when highs average 32°C. September is the month to avoid if rain would spoil your plans — it averages 151 mm, roughly 5× the rainfall of the driest month (January).

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

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