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Okayama weather in December 2025
Expect daytime maximum temperatures of 52°F in Okayama, Japan in December based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall.
- 52°F max day temperature
52 - 5 hours of sunshine per day
- 15 days with some rainfall
15 - 36°F min night temperature
36 - 10 hours of daylight per day
10 - No heat & humidity
0 - 1.3 inches of monthly rainfall
1.3 - 2 (Low) UV index
2
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Recommended for Japan
The December 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)
More about Japan
How warm is it in Okayama in December?
Daytime temperatures usually reach 54°F in Okayama in December, falling to 37°F at night.
How sunny is it in Okayama in December?
There are normally 6 hours of bright sunshine each day in Okayama in December - that's 57% of daylight hours.
How warm is the sea around Okayama in December?
The average sea temperature around Okayama in December is 63°F.
Does it rain in Okayama in December?
There are usually 9 days with some rain in Okayama in December and the average monthly rainfall is 1.7 inches.
Okayama December sunrise & sunset times
Browse the sunrise and sunset times for Okayama in December 2025. Select a month to view Okayama sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st December 2025 | 06:53 | 16:53 |
| Tuesday, 16th December 2025 | 07:04 | 16:55 |
| Wednesday, 31st December 2025 | 07:11 | 17:03 |
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