Kumamoto weather in August 2025

Expect 91°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Kumamoto in August. Check more long-term weather averages for Kumamoto in August before you book your next holiday to Japan in 2025/2026.

  • 91°F maximum daytime temperature in August in Kumamoto91
    91°F max day temperature
  • 7 hours of sunshine per day
  • 18 days with some rainfall in August in Kumamoto18
    18 days with some rainfall
  • 75°F minimum night-time temperature in August in Kumamoto75
    75°F min night temperature
  • 13 hours of daylight per day in August in Kumamoto13
    13 hours of daylight per day
  • Very high heat & humidity in August in KumamotoVH
    Very High heat & humidity
  • 7.8 inches monthly rainfall in August in Kumamoto7.8
    7.8 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in August in Kumamoto11
    11 (Extreme) UV index
  • 81°F sea temperature in August in Kumamoto81
    81°F sea temperature

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The August weather guide for Japan (Kumamoto) 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)  |  Imperial (°F)

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How hot is it in Kumamoto in August?

Daytime temperatures usually reach 91°F in Kumamoto in August with very high heat and humidity, falling to 75°F at night.

How sunny is it in Kumamoto in August?

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

How warm is the sea around Kumamoto in August?

The average sea temperature around Kumamoto in August is 81°F.

Does it rain in Kumamoto in August?

There are usually 18 days with some rain in Kumamoto in August and the average monthly rainfall is 7.8 inches.

What is the chance of a typhoon in Kumamoto in August?

On average 2.5 days in August in Kumamoto are likely to be affected by the passage of one or more tropical storms.

Kumamoto August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:31 19:16
Saturday, 16th August 2025 05:41 19:01
Sunday, 31st August 2025 05:51 18:44

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