Okayama weather in August 2025

Expect 90°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Okayama in August. Check more long-term weather averages for Okayama in August before you book your next holiday to Japan in 2025/2026.

  • 90°F maximum daytime temperature in August in Okayama90
    90°F max day temperature
  • 7 hours of sunshine per day
  • 13 days with some rainfall in August in Okayama13
    13 days with some rainfall
  • 75°F minimum night-time temperature in August in Okayama75
    75°F min night temperature
  • 13 hours of daylight per day in August in Okayama13
    13 hours of daylight per day
  • Very high heat & humidity in August in OkayamaVH
    Very High heat & humidity
  • 3.7 inches monthly rainfall in August in Okayama3.7
    3.7 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in August in Okayama10
    10 (Very High) UV index

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The August weather guide for Japan (Okayama) 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 Okayama in August?

Daytime temperatures usually reach 90°F in Okayama in August with very high heat and humidity, falling to 75°F at night.

How sunny is it in Okayama in August?

There are normally 7 hours of bright sunshine each day in Okayama in August - that's 52% of daylight hours.

Does it rain in Okayama in August?

There are usually 13 days with some rain in Okayama in August and the average monthly rainfall is 3.7 inches.

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

On average 1.8 days in August in Okayama are likely to be affected by the passage of one or more tropical storms.

Okayama August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:14 19:07
Saturday, 16th August 2025 05:25 18:51
Sunday, 31st August 2025 05:36 18:32

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