Yamagata weather in December 2025

Expect daytime maximum temperatures of 4°C in Yamagata, Japan in December based on long-term weather averages. There are 3 hours of sunshine per day on average with 27 days with some rainfall and typically 71 mm of rainfall in the month, which might fall as snow.

  • 4°C maximum daytime temperature in December in Yamagata4
    4°C max day temperature
  • 3 hours of sunshine per day
  • 27 days with some rainfall in December in Yamagata27
    27 days with some rainfall
  • -3°C minimum night-time temperature in December in Yamagata-3
    -3°C min night temperature
  • 10 hours of daylight per day in December in Yamagata10
    10 hours of daylight per day
  • No heat & humidity in December in Yamagata0
    No heat & humidity
  • 71 mm monthly rainfall in December in Yamagata71
    71 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Yamagata2
    2 (Low) UV index

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The December weather guide for Japan (Yamagata) 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 Yamagata in December?

Daytime temperatures usually reach 12°C in Yamagata in December, falling to 3°C at night.

How sunny is it in Yamagata in December?

There are normally 6 hours of bright sunshine each day in Yamagata in December - that's 57% of daylight hours.

How warm is the sea around Yamagata in December?

The average sea temperature around Yamagata in December is 17°C.

Does it rain in Yamagata in December?

There are usually 9 days with some rain in Yamagata in December and the average monthly rainfall is 44mm.

Yamagata December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:36 16:19
Tuesday, 16th December 2025 06:49 16:20
Wednesday, 31st December 2025 06:55 16:28

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