December Weather in Yasugi, Japan

Last updated: August 23, 2025

In December, the average temperature in Yasugi, Japan hovers around 5°C (42°F), with a minimum dipping to -5°C (24°F) and a maximum reaching 20°C (69°F). The region experiences a notable precipitation amount of 109 mm (4.3 in) over approximately 18 days, contributing to an average humidity level of 82%.

December Temperature in Yasugi

In December in Yasugi, the average temperature is 5°C (42°F), with maximums reaching up to 20°C (69°F) and minimums dropping as low as -5°C (24°F). Travelers should be prepared for a mix of cool and mild weather, so layering clothing is advisable.

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

The chart illustrates December temperature patterns in Yasugi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yasugi, December typically has an average temperature of 5°C (42°F), with highs reaching up to 20°C (69°F) and lows dropping to around -5°C (24°F).

Data source: Temperature data for Yasugi generated using information from the Copernicus Climate Change Service.

December Precipitation in Yasugi

In Yasugi in December, the total precipitation amount is 109 mm (4.3 in) spread over 18 days.

December Precipitation Trends in Yasugi

The chart displays monthly precipitation patterns in Yasugi, 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 Yasugi, December typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 18 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Yasugi

In Yasugi in December humidity is 82%. With an average temperature of 5°C (42°F), this humidity feels like a wet chill that seeps into your bones, making outdoor exploration uncomfortable and dampening the joy of traveling.

December Average Humidity in Yasugi

This chart illustrates the average monthly humidity levels in Yasugi, 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 Yasugi is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Yasugi

In Yasugi 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 Yasugi, you can check the information here.

Maximum UV Index Levels in Yasugi for December

The chart shows the monthly maximum UV Index (UVI) for Yasugi 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 Yasugi typically reaches 3, which falls under the moderate exposure category.

Data source: Yasugi 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 Yasugi Compares to Other Months

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

This table compares monthly weather conditions in Yasugi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	86 mm (3.4 inches)	82%	moderate
February Weather	4°C (39°F)	95 mm (3.8 inches)	79%	high
March Weather	8°C (47°F)	139 mm (5.5 inches)	73%	very high
April Weather	12°C (54°F)	129 mm (5.1 inches)	74%	extreme
May Weather	18°C (64°F)	103 mm (4.1 inches)	84%	extreme
June Weather	21°C (70°F)	206 mm (8.1 inches)	86%	extreme
July Weather	25°C (78°F)	322 mm (12.7 inches)	92%	extreme
August Weather	27°C (80°F)	263 mm (10.3 inches)	92%	extreme
September Weather	22°C (72°F)	238 mm (9.4 inches)	87%	very high
October Weather	16°C (62°F)	178 mm (7.0 inches)	85%	high
November Weather	10°C (51°F)	54 mm (2.1 inches)	84%	moderate
December Weather	5°C (42°F)	109 mm (4.3 inches)	82%	moderate