December Weather in Asahimachi, Japan

Last updated: August 23, 2025

In December, the average temperature in Asahimachi, Japan is a chilly -5°C (24°F). Expect minimum temperatures to plunge as low as -18°C (-1°F) and possibly reach a maximum of 12°C (54°F). With 129 mm (5.1 in) of precipitation spread over 27 days, the atmosphere is quite humid, averaging 80%. Be prepared for brisk weather and frequent showers!

December Temperature in Asahimachi

In December in Asahimachi, the average temperature is -5°C (24°F), with maximums reaching 12°C (54°F) and minimums plunging as low as -18°C (-1°F). Travelers should be prepared for a significant range in temperatures, ensuring they pack accordingly for both cold and milder days.

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

The chart illustrates December temperature patterns in Asahimachi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Asahimachi, December typically has an average temperature of -5°C (24°F), with highs reaching up to 12°C (54°F) and lows dropping to around -18°C (-1°F).

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

December Precipitation in Asahimachi

In Asahimachi in December, the precipitation amount is 129 mm (5.1 in) spread over 27 days.

December Precipitation Trends in Asahimachi

The chart displays monthly precipitation patterns in Asahimachi, 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 Asahimachi, December typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 27 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 Asahimachi

In Asahimachi in December, humidity is 80%. With an average temperature of -5°C (24°F), this humidity feels like an invisible chill that seeps into your bones, making it difficult to enjoy outdoor activities and necessitating extra layers for comfort as you travel.

December Average Humidity in Asahimachi

This chart illustrates the average monthly humidity levels in Asahimachi, 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 Asahimachi is approximately 80%, 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 Asahimachi

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

Maximum UV Index Levels in Asahimachi for December

The chart shows the monthly maximum UV Index (UVI) for Asahimachi 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 Asahimachi typically reaches 2, which falls under the low exposure category.

Data source: Asahimachi 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 Asahimachi Compares to Other Months

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

This table compares monthly weather conditions in Asahimachi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	67 mm (2.6 inches)	84%	low
February Weather	-6°C (21°F)	87 mm (3.4 inches)	83%	moderate
March Weather	-1°C (31°F)	93 mm (3.7 inches)	81%	high
April Weather	5°C (42°F)	80 mm (3.2 inches)	81%	high
May Weather	12°C (54°F)	113 mm (4.5 inches)	86%	very high
June Weather	15°C (60°F)	118 mm (4.7 inches)	87%	very high
July Weather	20°C (69°F)	147 mm (5.8 inches)	93%	very high
August Weather	20°C (68°F)	208 mm (8.2 inches)	95%	very high
September Weather	16°C (61°F)	122 mm (4.8 inches)	88%	very high
October Weather	10°C (50°F)	169 mm (6.7 inches)	83%	moderate
November Weather	3°C (37°F)	168 mm (6.6 inches)	79%	moderate
December Weather	-5°C (24°F)	129 mm (5.1 inches)	80%	low