Nishi-Tokyo Weather in December
What's the weather like in Nishi-Tokyo (Tōkyō) in December 2025?
The climate in Nishi-Tokyo during December can be summarized as cool and reasonably dry.
December is in the winter in Nishi-Tokyo and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 12°C (54°F), whilst at night 2°C (36°F) is normal.
| Daytime temperature | 12.1°C 53.7°F |
|---|---|
| Nightly temperature | 2.2°C 35.9°F |
| Average temperature | 7.1°C 44.8°F |
| Daily sunshine | 6.3 hrs |
| Avg rainfall | 42 mm 1.6 ins |
| Rainy days | 8 days |
| Sea temperature | 18.6°C 65.5°F |
| Humidity | 59% |
| Windspeed | 9.4kph 6 mph |
On average December is the 2nd driest month of the year in Nishi-Tokyo with around 42mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.3 hours of sunshine per day.
December temperatures in Nishi-Tokyo
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Nishi-Tokyo in December 2025.
Other monthly averages
Best places to visit in December
Nishi-Tokyo weather stats
| Hottest month: | August | 30.7°C 87.3°F |
|---|---|---|
| Driest month: | January | 40mm 1.6ins |
| Sunniest month: | January | 6.5hrs |
| Coldest month: | January | 9.3°C 48.7°F |
| Wettest month: | September | 188mm 7.4ins |
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