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Katsushika-ku Weather by Month
Average temperatures, rainfall and humidity for Katsushika-ku, Japan, month by month, built from OpenWeather's historical records. Use it to see what a typical Katsushika-ku month looks like before you travel — then check the live Katsushika-ku forecast for the days ahead.
Warmest month
August
32°C average high
Coolest month
January
2°C average low
Wettest month
June
151 mm of rain
Driest month
January
28 mm of rain
Average temperature and rainfall in Katsushika-ku 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 | -7°C / 18°C | 28 mm | 55% | 13 km/h |
| February | 11°C | 3°C | -4°C / 23°C | 45 mm | 58% | 14 km/h |
| March | 15°C | 7°C | -3°C / 27°C | 85 mm | 62% | 15 km/h |
| April | 19°C | 12°C | 1°C / 28°C | 107 mm | 66% | 15 km/h |
| May | 24°C | 17°C | 7°C / 33°C | 106 mm | 69% | 14 km/h |
| June | 27°C | 20°C | 13°C / 37°C | 151 mm | 73% | 12 km/h |
| July | 31°C | 24°C | 18°C / 39°C | 112 mm | 75% | 12 km/h |
| August | 32°C | 26°C | 17°C / 39°C | 120 mm | 73% | 13 km/h |
| September | 28°C | 22°C | 13°C / 37°C | 132 mm | 75% | 13 km/h |
| October | 22°C | 16°C | 5°C / 33°C | 120 mm | 71% | 13 km/h |
| November | 17°C | 10°C | -1°C / 27°C | 62 mm | 64% | 12 km/h |
| December | 12°C | 4°C | -6°C / 23°C | 37 mm | 57% | 13 km/h |
Best time to visit Katsushika-ku
The most comfortable time to visit Katsushika-ku 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 1104 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 151 mm, roughly 5× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Katsushika-ku forecast for what is happening now.