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December Weather in Ashoro, Japan

Last updated: August 23, 2025

In December, the average temperature in Ashoro, Japan hovers around -5°C (23°F). Temperatures can swing between a frigid -19°C (-3°F) at their lowest and a mild 11°C (53°F) at their peak. Expect 53 mm (2.1 in) of precipitation spread across 8 days, contributing to an average humidity level of 79%. Stay warm and prepare for a mix of chilly and mild weather!

December Temperature in Ashoro

In December in Ashoro, the average temperature is -5°C (23°F). The maximum can reach 11°C (53°F), while the minimum can plummet to as low as -19°C (-3°F). Travelers should prepare for a chilly climate and pack accordingly for both warm and extremely cold temperatures.

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

The chart illustrates December temperature patterns in Ashoro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ashoro, December typically has an average temperature of -5°C (23°F), with highs reaching up to 11°C (53°F) and lows dropping to around -19°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec171830405157646559483623
Data source: Temperature data for Ashoro 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 Ashoro

In Ashoro in December, the total precipitation amount is 53 mm (2.1 in) over the course of 8 days.

December Precipitation Trends in Ashoro

The chart displays monthly precipitation patterns in Ashoro, 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 Ashoro, December typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec4446988497114901551141699253
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Ashoro

In Ashoro in December, humidity is 79%. With an average temperature of -5°C (23°F), this humidity feels like a biting chill that penetrates through layers of clothing, making traveling quite uncomfortable and requiring extra preparation to stay warm and dry.

December Average Humidity in Ashoro

This chart illustrates the average monthly humidity levels in Ashoro, 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 Ashoro is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%83%86%88%93%96%89%83%80%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Ashoro

In Ashoro in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Ashoro, you can visit Hourly UV Index in Ashoro.

Maximum UV Index Levels in Ashoro for December

The chart shows the monthly maximum UV Index (UVI) for Ashoro 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 Ashoro typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec23588101098532
Data source: Ashoro 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 Ashoro Compares to Other Months

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

This table compares monthly weather conditions in Ashoro, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)44 mm (1.7 inches)84%low
February Weather-8°C (18°F)46 mm (1.8 inches)83%moderate
March Weather-1°C (30°F)98 mm (3.8 inches)83%moderate
April Weather4°C (40°F)84 mm (3.3 inches)83%very high
May Weather11°C (52°F)96 mm (3.8 inches)86%very high
June Weather14°C (57°F)114 mm (4.5 inches)88%very high
July Weather18°C (65°F)90 mm (3.5 inches)93%very high
August Weather18°C (65°F)155 mm (6.1 inches)96%very high
September Weather15°C (59°F)114 mm (4.5 inches)89%very high
October Weather9°C (49°F)169 mm (6.6 inches)83%moderate
November Weather2°C (36°F)92 mm (3.6 inches)80%moderate
December Weather-5°C (23°F)53 mm (2.1 inches)79%low

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