Monthly climate guide
Hamamatsu weather in August
Expect hot weather in Hamamatsu in August: afternoons reach about 28°C (83°F), while nights drop to around 27°C (80°F). Around 163 mm of rain falls over the month (very wet), and skies are often cloudy. Daytime highs are 2°C warmer than July and 2°C warmer than September.
What stands out in August
- Humidity near 85% makes 28°C feel stickier than it sounds.
- There's little difference between day and night (around 2°C).
- In Hamamatsu, August is late summer.
- Skies are at their clearest this time of year.
August is typically Hamamatsu's warmest month.
Avg high
28°C
83°F
Avg low
27°C
80°F
Rainfall
163 mm
very wet
Humidity
85%
relative
Sky
55%
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 August
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is August 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 August
Cite or embed this data
Writing about this destination? Copy a ready-made citation or embed a live widget — free, just keep the link.
Hamamatsu weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/japan/hamamatsu/august
<a href="https://weathercompare.eu/weather/japan/hamamatsu/august">Hamamatsu weather in August</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 August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/japan/hamamatsu/august">Hamamatsu weather in August</a> – WeatherCompare</p>
Hamamatsu in August: quick answers
Is August a good time to visit Hamamatsu?
August is one of the wetter months in Hamamatsu, with about 163 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Hamamatsu in August?
Average highs are about 28°C (83°F) and average lows about 27°C (80°F), based on 10 years of daily data.
Does it rain a lot in Hamamatsu in August?
Hamamatsu typically gets around 163 mm of rain in August — very wet.
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.