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December Weather in Kuroiso, Japan

Last updated: August 23, 2025

In Kuroiso, Japan, the average temperature in December hovers around 3°C (38°F). During this time, expect a chilly minimum of -6°C (21°F), with a pleasant maximum reaching up to 17°C (63°F). Be prepared for 65 mm (2.5 in) of precipitation over approximately 11 days, contributing to the area's average humidity of 86%.

December Temperature in Kuroiso

In December in Kuroiso, the average temperature is 3°C (38°F), with maximums reaching 17°C (63°F) and minimums dropping as low as -6°C (21°F). Be prepared for a mix of chilly and mild weather, making it essential to dress in layers during your travels.

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

The chart illustrates December temperature patterns in Kuroiso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kuroiso, December typically has an average temperature of 3°C (38°F), with highs reaching up to 17°C (63°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec343642506166737668584838
Data source: Temperature data for Kuroiso 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 Kuroiso

In Kuroiso in December, the precipitation amount is 65 mm (2.5 in) over a span of 11 days.

December Precipitation Trends in Kuroiso

The chart displays monthly precipitation patterns in Kuroiso, 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 Kuroiso, December typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec55501441381661603162011962626265
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kuroiso

In Kuroiso 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 Kuroiso

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

In Kuroiso 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 Kuroiso, you can check the information here.

Maximum UV Index Levels in Kuroiso for December

The chart shows the monthly maximum UV Index (UVI) for Kuroiso 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 Kuroiso typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111119753
Data source: Kuroiso 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 Kuroiso Compares to Other Months

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

This table compares monthly weather conditions in Kuroiso, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)55 mm (2.2 inches)88%moderate
February Weather2°C (36°F)50 mm (2.0 inches)86%moderate
March Weather6°C (43°F)144 mm (5.7 inches)81%very high
April Weather10°C (51°F)138 mm (5.4 inches)78%very high
May Weather16°C (61°F)166 mm (6.5 inches)81%very high
June Weather19°C (66°F)160 mm (6.3 inches)88%extreme
July Weather23°C (73°F)316 mm (12.4 inches)92%extreme
August Weather24°C (76°F)201 mm (7.9 inches)92%extreme
September Weather20°C (68°F)196 mm (7.7 inches)89%very high
October Weather14°C (58°F)262 mm (10.3 inches)87%high
November Weather9°C (48°F)62 mm (2.4 inches)85%moderate
December Weather3°C (38°F)65 mm (2.5 inches)86%moderate

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