Hamamatsu weather in August 2025

Expect daytime maximum temperatures of 30°C in Hamamatsu in August and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 16 days with some rainfall and typically 195 mm of rainfall in the month.

  • 30°C maximum daytime temperature in August in Hamamatsu30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in August in Hamamatsu16
    16 days with some rainfall
  • 23°C minimum night-time temperature in August in Hamamatsu23
    23°C min night temperature
  • 13 hours of daylight per day in August in Hamamatsu13
    13 hours of daylight per day
  • High heat & humidity in August in HamamatsuH
    High heat & humidity
  • 195 mm monthly rainfall in August in Hamamatsu195
    195 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in August in Hamamatsu10
    10 (Very High) UV index
  • 27°C sea temperature in August in Hamamatsu27
    27°C sea temperature

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The August 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Hamamatsu in August?

Daytime temperatures usually reach 30°C in Hamamatsu in August with high heat and humidity, falling to 23°C at night.

How sunny is it in Hamamatsu in August?

There are normally 7 hours of bright sunshine each day in Hamamatsu in August - that's 50% of daylight hours.

How warm is the sea around Hamamatsu in August?

The average sea temperature around Hamamatsu in August is 27°C.

Does it rain in Hamamatsu in August?

There are usually 16 days with some rain in Hamamatsu in August and the average monthly rainfall is 195mm.

Hamamatsu August sunrise & sunset times

Browse the sunrise and sunset times for Hamamatsu in August 2025. Select a month to view Hamamatsu sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:59 18:51
Saturday, 16th August 2025 05:10 18:36
Sunday, 31st August 2025 05:21 18:17

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