Monthly climate guide
Hamamatsu weather in December
With highs near 13°C (56°F) and lows around 10°C (50°F), December feels cool in Hamamatsu. Rainfall averages about 78 mm (some rain) and the sky is often cloudy. Daytime highs are 5°C cooler than November and 3°C warmer than January.
What stands out in December
- Days and nights are close, only about 3°C apart.
- It's one of the drier months, with about 55% less rain than Hamamatsu's average.
- Hamamatsu is usually about 5°C warmer than Shizuoka, 70 km away, in December.
- December is among Hamamatsu's three coolest months.
Avg high
13°C
56°F
Avg low
10°C
50°F
Rainfall
78 mm
some rain
Humidity
74%
relative
Sky
58%
cloud · often cloudy
Hamamatsu weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 11°C / 51°F | 7°C / 45°F | 64 mm | 74% | 56% |
| February | 11°C / 52°F | 7°C / 45°F | 89 mm | 73% | 61% |
| March | 14°C / 57°F | 10°C / 49°F | 128 mm | 73% | 56% |
| April | 17°C / 63°F | 13°C / 56°F | 207 mm | 76% | 60% |
| May | 21°C / 69°F | 18°C / 64°F | 179 mm | 80% | 62% |
| June | 23°C / 74°F | 21°C / 70°F | 259 mm | 85% | 78% |
| July | 27°C / 80°F | 25°C / 77°F | 279 mm | 88% | 70% |
| August | 28°C / 83°F | 27°C / 80°F | 163 mm | 85% | 55% |
| September | 26°C / 80°F | 24°C / 76°F | 281 mm | 79% | 66% |
| October | 23°C / 73°F | 20°C / 68°F | 247 mm | 75% | 62% |
| November | 18°C / 65°F | 15°C / 59°F | 104 mm | 72% | 57% |
| December | 13°C / 56°F | 10°C / 50°F | 78 mm | 74% | 58% |
What to pack for December
- A warm sweater or fleece for layering
- A mid-weight jacket
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is December a good time to visit Hamamatsu?
Compare the months in the chart above to find your ideal window.
Best time to visit Hamamatsu →Other Japan cities in December
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Hamamatsu weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/japan/hamamatsu/december
<a href="https://weathercompare.eu/weather/japan/hamamatsu/december">Hamamatsu weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/japan/hamamatsu" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Hamamatsu weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/japan/hamamatsu/december">Hamamatsu weather in December</a> – WeatherCompare</p>
Hamamatsu in December: quick answers
Is December a good time to visit Hamamatsu?
Yes. December is one of the best months for Hamamatsu, with highs around 13°C and about 78 mm of rain.
How warm is Hamamatsu in December?
Average highs are about 13°C (56°F) and average lows about 10°C (50°F), based on 10 years of daily data.
Does it rain a lot in Hamamatsu in December?
Hamamatsu typically gets around 78 mm of rain in December — some rain.
Figures are long-term averages for the area around Hamamatsu (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.