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December Weather in Tokamachi, Japan

Last updated: August 23, 2025

In December, the average temperature in Tokamachi, Japan hovers around 3°C (38°F), with a minimum that can dip to -9°C (16°F) and a maximum reaching up to 21°C (69°F). Expect a notable precipitation amount of 229 mm (9.0 in) spread over approximately 23 days, contributing to an average humidity of 86%. Stay prepared for a mix of chilly weather and moisture!

December Temperature in Tokamachi

In December in Tokamachi, the average temperature is 3°C (38°F), with maximums reaching up to 21°C (69°F) and minimums dropping as low as -9°C (16°F). Be prepared for a wide temperature range and dress in layers to stay comfortable during your travels.

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

The chart illustrates December temperature patterns in Tokamachi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tokamachi, December typically has an average temperature of 3°C (38°F), with highs reaching up to 21°C (69°F) and lows dropping to around -9°C (16°F).
JanFebMarAprMayJunJulAugSepOctNovDec333443526369777971604938
Data source: Temperature data for Tokamachi 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 Tokamachi

In Tokamachi in December, the total precipitation amount is 229 mm (9.0 in), which falls over the course of 23 days.

December Precipitation Trends in Tokamachi

The chart displays monthly precipitation patterns in Tokamachi, 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 Tokamachi, December typically receives around 229 mm (9.0 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec200182159146147156360178179205150229
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Tokamachi

In Tokamachi in December humidity is 86%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps through your layers, making traveling uncomfortable as breath clouds visibly in the crisp air.

December Average Humidity in Tokamachi

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

In Tokamachi 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 Tokamachi, you can check the information here.

Maximum UV Index Levels in Tokamachi for December

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

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

This table compares monthly weather conditions in Tokamachi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)200 mm (7.9 inches)88%moderate
February Weather1°C (35°F)182 mm (7.2 inches)86%moderate
March Weather6°C (43°F)159 mm (6.2 inches)81%very high
April Weather11°C (52°F)146 mm (5.8 inches)78%very high
May Weather17°C (63°F)147 mm (5.8 inches)81%very high
June Weather21°C (69°F)156 mm (6.1 inches)88%extreme
July Weather25°C (77°F)360 mm (14.2 inches)92%extreme
August Weather26°C (80°F)178 mm (7.0 inches)92%extreme
September Weather22°C (71°F)179 mm (7.0 inches)89%very high
October Weather16°C (61°F)205 mm (8.1 inches)87%high
November Weather9°C (49°F)150 mm (5.9 inches)85%moderate
December Weather3°C (38°F)229 mm (9.0 inches)86%moderate

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