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Hamamatsu weather in December 2025
Expect daytime maximum temperatures of 54°F in Hamamatsu, Japan in December based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 1.9 inches of rainfall in the month.
- 54°F max day temperature
54 - 6 hours of sunshine per day
- 10 days with some rainfall
10 - 39°F min night temperature
39 - 10 hours of daylight per day
10 - No heat & humidity
0 - 1.9 inches of monthly rainfall
1.9 - 2 (Low) UV index
2 - 68°F sea temperature
68
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Recommended for Japan
The December weather guide for Japan (Hamamatsu) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C) | Imperial (°F)
More about Japan
How warm is it in Hamamatsu in December?
Daytime temperatures usually reach 54°F in Hamamatsu in December, falling to 39°F at night.
How sunny is it in Hamamatsu in December?
There are normally 6 hours of bright sunshine each day in Hamamatsu in December - that's 60% of daylight hours.
How warm is the sea around Hamamatsu in December?
The average sea temperature around Hamamatsu in December is 68°F.
Does it rain in Hamamatsu in December?
There are usually 10 days with some rain in Hamamatsu in December and the average monthly rainfall is 1.9 inches.
Hamamatsu December sunrise & sunset times
Browse the sunrise and sunset times for Hamamatsu in December 2025. Select a month to view Hamamatsu sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st December 2025 | 06:38 | 16:38 |
| Tuesday, 16th December 2025 | 06:49 | 16:40 |
| Wednesday, 31st December 2025 | 06:56 | 16:48 |
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