Hamamatsu weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Good
Best time to visit: April – June, October – November
What is the weather like in Hamamatsu in April?
In April, Hamamatsu is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. The sea averages 17.4 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7 hours a day. Rain is frequent, with about 12 rainy days and 167 mm in total. All in all, April is a good month for a holiday in Hamamatsu.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 13 h 1 min05:19 – 18:20
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 58 %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 %60 %
- Few rainy daysweight 30 %46 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in April
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Hamamatsu in April: quick answers
Is Hamamatsu hot in April?
No. In April, Hamamatsu is mild: daytime highs average 19 °C and nights drop to about 10 °C.
Can you swim in Hamamatsu in April?
Only if you don't mind cold water: in April the sea averages just 17.4 °C. Comfortable swimming is possible from June to November.
Does it rain much in Hamamatsu in April?
Rain is frequent, with about 12 rainy days and 167 mm in total.
Hamamatsu month by month
The whole year in HamamatsuAll destinations: JapanWhere to go in AprilSea temperature in April
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