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December Weather in Toyokoro, Japan

Last updated: August 23, 2025

In Toyokoro, Japan during December, the average temperature hovers around -3°C (28°F). Expect chilly conditions, with minimums dipping to -16°C (3°F) and maximums reaching 14°C (57°F). Be prepared for some moisture, as 48 mm (1.9 in) of precipitation can fall over approximately 6 days. With an average humidity of 79%, layering up is essential for comfort!

December Temperature in Toyokoro

In December in Toyokoro, the average temperature is -3°C (28°F). The maximum can reach 14°C (57°F), while the minimum can drop as low as -16°C (3°F). It's advisable to pack warm clothing for your travels during this time.

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

The chart illustrates December temperature patterns in Toyokoro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Toyokoro, December typically has an average temperature of -3°C (28°F), with highs reaching up to 14°C (57°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec212234435358656763534127
Data source: Temperature data for Toyokoro 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 Toyokoro

In Toyokoro in December, the precipitation amount is 48 mm (1.9 in) distributed over 6 days.

December Precipitation Trends in Toyokoro

The chart displays monthly precipitation patterns in Toyokoro, 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 Toyokoro, December typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec504991807889761451171617548
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Toyokoro

In Toyokoro in December, humidity is 79%. With an average temperature of -3°C (28°F), this humidity feels like a biting chill that clings to your skin, making outdoor exploration brisk and invigorating, yet potentially uncomfortably damp if you're not dressed warmly enough.

December Average Humidity in Toyokoro

This chart illustrates the average monthly humidity levels in Toyokoro, 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 Toyokoro 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 Toyokoro

In Toyokoro 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 Toyokoro, you can visit Hourly UV Index in Toyokoro.

Maximum UV Index Levels in Toyokoro for December

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

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

This table compares monthly weather conditions in Toyokoro, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)50 mm (2.0 inches)84%low
February Weather-5°C (23°F)49 mm (1.9 inches)83%moderate
March Weather1°C (34°F)91 mm (3.6 inches)83%moderate
April Weather6°C (44°F)80 mm (3.1 inches)83%very high
May Weather12°C (54°F)78 mm (3.1 inches)86%very high
June Weather15°C (58°F)89 mm (3.5 inches)88%very high
July Weather18°C (65°F)76 mm (3.0 inches)93%very high
August Weather20°C (68°F)145 mm (5.7 inches)96%very high
September Weather17°C (63°F)117 mm (4.6 inches)89%very high
October Weather12°C (53°F)161 mm (6.3 inches)83%moderate
November Weather5°C (42°F)75 mm (3.0 inches)80%moderate
December Weather-3°C (28°F)48 mm (1.9 inches)79%low

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