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December Weather in Uonuma, Japan

Last updated: August 23, 2025

In December, the average temperature in Uonuma, Japan hovers around 2°C (35°F). The weather can be quite variable, with temperatures dipping as low as -11°C (12°F) and reaching up to 20°C (68°F). Expect 283 mm (11.2 in) of precipitation spread over about 24 days, contributing to a notably high average humidity of 86%. Be prepared for a moist and chilly climate!

December Temperature in Uonuma

In December in Uonuma, the average temperature is 2°C (35°F). Maximums can reach 20°C (68°F) and minimums can be as low as -11°C (12°F). Be prepared for a wide range of temperatures when traveling to Uonuma during this month.

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

The chart illustrates December temperature patterns in Uonuma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Uonuma, December typically has an average temperature of 2°C (35°F), with highs reaching up to 20°C (68°F) and lows dropping to around -11°C (12°F).
JanFebMarAprMayJunJulAugSepOctNovDec313239486167757769584735
Data source: Temperature data for Uonuma 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 Uonuma

In Uonuma in December, the precipitation amount is 283 mm (11.2 in) over a span of 24 days, showcasing the region's wet climate during that time.

December Precipitation Trends in Uonuma

The chart displays monthly precipitation patterns in Uonuma, 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 Uonuma, December typically receives around 283 mm (11.2 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec254244193171168177371195181228178283
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Uonuma

In Uonuma in December humidity is 86%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable as your clothes cling to you and the cold air cuts through any warmth you try to find.

December Average Humidity in Uonuma

This chart illustrates the average monthly humidity levels in Uonuma, 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 Uonuma is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%79%81%88%92%92%89%87%85%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Uonuma

In Uonuma 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 Uonuma, you can check the information here.

Maximum UV Index Levels in Uonuma for December

The chart shows the monthly maximum UV Index (UVI) for Uonuma 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 Uonuma typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589101111119753
Data source: Uonuma 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 Uonuma Compares to Other Months

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

This table compares monthly weather conditions in Uonuma, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (31°F)254 mm (10.0 inches)88%moderate
February Weather0°C (32°F)244 mm (9.6 inches)86%moderate
March Weather4°C (39°F)193 mm (7.6 inches)81%very high
April Weather9°C (49°F)171 mm (6.7 inches)78%very high
May Weather16°C (61°F)168 mm (6.6 inches)81%very high
June Weather19°C (67°F)177 mm (7.0 inches)88%extreme
July Weather24°C (75°F)371 mm (14.6 inches)92%extreme
August Weather25°C (77°F)195 mm (7.7 inches)92%extreme
September Weather21°C (69°F)180 mm (7.1 inches)89%very high
October Weather15°C (59°F)228 mm (9.0 inches)87%high
November Weather8°C (47°F)178 mm (7.0 inches)85%moderate
December Weather2°C (35°F)283 mm (11.2 inches)86%moderate

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