Osaka weather in January 2026

Expect daytime maximum temperatures of 9°C in Osaka, Japan in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 52 mm of rainfall in the month.

  • 9°C maximum daytime temperature in January in Osaka9
    9°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in January in Osaka17
    17 days with some rainfall
  • 1°C minimum night-time temperature in January in Osaka1
    1°C min night temperature
  • 10 hours of daylight per day in January in Osaka10
    10 hours of daylight per day
  • No heat & humidity in January in Osaka0
    No heat & humidity
  • 52 mm monthly rainfall in January in Osaka52
    52 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in January in Osaka3
    3 (Moderate) UV index
  • 16°C sea temperature in January in Osaka16
    16°C sea temperature

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The January weather guide for Japan (Osaka) 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 Osaka in January?

Daytime temperatures usually reach 9°C in Osaka in January, falling to 1°C at night.

How sunny is it in Osaka in January?

There are normally 5 hours of bright sunshine each day in Osaka in January - that's 44% of daylight hours.

How warm is the sea around Osaka in January?

The average sea temperature around Osaka in January is 16°C.

Does it rain in Osaka in January?

There are usually 17 days with some rain in Osaka in January and the average monthly rainfall is 52mm.

Osaka January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:05 16:58
Friday, 16th January 2026 07:05 17:11
Saturday, 31st January 2026 06:57 17:26

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