Hamamatsu weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Good
Best time to visit: April – June, October – November
What is the weather like in Hamamatsu in October?
In October, Hamamatsu is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. The sea averages 23.7 °C – pleasant for swimming. Expect around 5 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 208 mm in total. All in all, October is a good month for a holiday in Hamamatsu.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 60 | 69 | 74 |
| Day | 27° | 22° | 17° |
| Night | 21° | 15° | 9° |
| Sea | 26° | 24° | 21° |
| Sun | 5 h | 5 h | 6 h |
| Rain days | 16 | 13 | 10 |
More details for October
- Daylight
- 11 h 22 min05:54 – 17:16
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %35 %
- Few rainy daysweight 30 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Hamamatsu in October: quick answers
Is Hamamatsu hot in October?
Warm rather than hot: in October, daytime highs in Hamamatsu average 22 °C and nights cool to about 15 °C.
Can you swim in Hamamatsu in October?
Yes. In October the sea averages 23.7 °C – pleasant for swimming.
Does it rain much in Hamamatsu in October?
Rain is frequent, with about 13 rainy days and 208 mm in total.
Hamamatsu month by month
The whole year in HamamatsuAll destinations: JapanWhere to go in OctoberSea temperature in October
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences