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December Weather in Tomioka, Japan

Last updated: August 23, 2025

In December, the average temperature in Tomioka, Japan hovers around 5°C (42°F). Expect a minimum of -3°C (27°F) and a maximum of 18°C (66°F), providing a varied climate experience. Additionally, the region sees about 60 mm (2.3 in) of precipitation spread over 7 days, contributing to an average humidity of 77%. Stay prepared for a mix of crisp air and potential rain as you explore!

December Temperature in Tomioka

In December in Tomioka, the average temperature is 5°C (42°F), with maximums reaching up to 18°C (66°F) and minimums dipping as low as -3°C (27°F). This weather makes it a great time for travelers to enjoy the crisp air and explore the beautiful landscapes without the summer crowds.

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

The chart illustrates December temperature patterns in Tomioka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tomioka, December typically has an average temperature of 5°C (42°F), with highs reaching up to 18°C (66°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec383946536368757871625242
Data source: Temperature data for Tomioka 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 Tomioka

In Tomioka in December, the total precipitation amount is 60 mm (2.3 in) spread over a duration of 7 days.

December Precipitation Trends in Tomioka

The chart displays monthly precipitation patterns in Tomioka, 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 Tomioka, December typically receives around 60 mm (2.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec50381441211371212381511712346060
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Tomioka

In Tomioka in December, humidity is 77%. With an average temperature of 5°C (42°F), this humidity feels like a chilly, damp embrace, making outdoor activities feel quite uncomfortable and the air heavy as you traverse the landscape.

December Average Humidity in Tomioka

This chart illustrates the average monthly humidity levels in Tomioka, 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 Tomioka is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%72%73%80%87%93%90%84%80%77%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Tomioka

In Tomioka 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 Tomioka, you can check the information here.

Maximum UV Index Levels in Tomioka for December

The chart shows the monthly maximum UV Index (UVI) for Tomioka 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 Tomioka typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101011119653
Data source: Tomioka 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 Tomioka Compares to Other Months

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

This table compares monthly weather conditions in Tomioka, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)50 mm (2.0 inches)76%moderate
February Weather4°C (40°F)38 mm (1.5 inches)75%moderate
March Weather8°C (46°F)144 mm (5.7 inches)72%high
April Weather12°C (53°F)121 mm (4.8 inches)73%very high
May Weather17°C (63°F)137 mm (5.4 inches)80%very high
June Weather20°C (68°F)121 mm (4.8 inches)87%very high
July Weather24°C (75°F)238 mm (9.4 inches)92%extreme
August Weather26°C (79°F)151 mm (5.9 inches)90%extreme
September Weather22°C (71°F)171 mm (6.7 inches)84%very high
October Weather17°C (62°F)233 mm (9.2 inches)80%high
November Weather11°C (52°F)60 mm (2.4 inches)77%moderate
December Weather5°C (42°F)60 mm (2.3 inches)77%moderate

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