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December Weather in Tsuyama, Japan

Last updated: August 23, 2025

In Tsuyama, Japan, the average temperature in December hovers around 5°C (42°F). Expect a minimum of -6°C (22°F) and a maximum of 20°C (68°F) during this period. With 54 mm (2.1 in) of precipitation spread over 8 days, you'll find the weather quite humid, boasting an average humidity of 82%.

December Temperature in Tsuyama

In December in Tsuyama, the average temperature is 5°C (42°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as -6°C (22°F). Travelers should be prepared for a range of weather conditions, from mild days to chilly nights.

December Weather in Tsuyama: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Tsuyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tsuyama, December typically has an average temperature of 5°C (42°F), with highs reaching up to 20°C (68°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec383948566571798173635142
Data source: Temperature data for Tsuyama generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Tsuyama

In Tsuyama in December, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.

December Precipitation Trends in Tsuyama

The chart displays monthly precipitation patterns in Tsuyama, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Tsuyama, December typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec41561151321291783252232221773454
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Tsuyama

In Tsuyama in December humidity is 82%. With an average temperature of 5°C (42°F), this humidity feels like a wet chill that seeps into your bones, making outdoor exploration uncomfortable and dampening the joy of traveling.

December Average Humidity in Tsuyama

This chart illustrates the average monthly humidity levels in Tsuyama, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Tsuyama is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%73%74%84%86%92%92%87%85%84%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Tsuyama

In Tsuyama in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Tsuyama, you can check the information here.

Maximum UV Index Levels in Tsuyama for December

The chart shows the monthly maximum UV Index (UVI) for Tsuyama in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Tsuyama typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111121210753
Data source: Tsuyama December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Tsuyama Compares to Other Months

Weather in Tsuyama varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Tsuyama, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Tsuyama, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)41 mm (1.6 inches)82%moderate
February Weather4°C (40°F)56 mm (2.2 inches)79%high
March Weather9°C (48°F)115 mm (4.5 inches)73%very high
April Weather13°C (56°F)132 mm (5.2 inches)74%extreme
May Weather18°C (65°F)129 mm (5.1 inches)84%extreme
June Weather22°C (71°F)178 mm (7.0 inches)86%extreme
July Weather26°C (79°F)325 mm (12.8 inches)92%extreme
August Weather27°C (82°F)223 mm (8.8 inches)92%extreme
September Weather23°C (74°F)222 mm (8.8 inches)87%very high
October Weather17°C (63°F)177 mm (7.0 inches)85%high
November Weather11°C (51°F)34 mm (1.3 inches)84%moderate
December Weather5°C (42°F)54 mm (2.1 inches)82%moderate

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