Okayama weather in January 2026

Expect daytime maximum temperatures of 9°C in Okayama, Japan in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 18 days with some rainfall and typically 41 mm of rainfall in the month.

  • 9°C maximum daytime temperature in January in Okayama9
    9°C max day temperature
  • 5 hours of sunshine per day
  • 18 days with some rainfall in January in Okayama18
    18 days with some rainfall
  • 0°C minimum night-time temperature in January in Okayama0
    0°C min night temperature
  • 10 hours of daylight per day in January in Okayama10
    10 hours of daylight per day
  • No heat & humidity in January in Okayama0
    No heat & humidity
  • 41 mm monthly rainfall in January in Okayama41
    41 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in January in Okayama3
    3 (Moderate) UV index

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

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More about Japan

How warm is it in Okayama in January?

Daytime temperatures usually reach 10°C in Okayama in January, falling to 0°C at night.

How sunny is it in Okayama in January?

There are normally 6 hours of bright sunshine each day in Okayama in January - that's 59% of daylight hours.

How warm is the sea around Okayama in January?

The average sea temperature around Okayama in January is 15°C.

Does it rain in Okayama in January?

There are usually 9 days with some rain in Okayama in January and the average monthly rainfall is 43mm.

Okayama January sunrise & sunset times

Browse the sunrise and sunset times for Okayama in January 2026. Select a month to view Okayama sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:11 17:04
Friday, 16th January 2026 07:11 17:17
Saturday, 31st January 2026 07:03 17:32

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