December Weather in Ashibetsu, Japan

Last updated: August 23, 2025

In Ashibetsu, Japan, the average temperature in December hovers around -5°C (23°F). Temperatures can dip as low as -20°C (-3°F) or rise to a maximum of 12°C (54°F). During this month, expect about 111 mm (4.4 in) of precipitation spread across 26 days, accompanied by an average humidity level of 80%.

December Temperature in Ashibetsu

In December in Ashibetsu, the average temperature is -5°C (23°F). The maximum can reach 12°C (54°F), and the minimum can be as low as -20°C (-3°F). Travelers should be prepared for cold weather conditions and pack appropriately for both chilly days and freezing nights.

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

The chart illustrates December temperature patterns in Ashibetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ashibetsu, December typically has an average temperature of -5°C (23°F), with highs reaching up to 12°C (54°F) and lows dropping to around -20°C (-3°F).

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

December Precipitation in Ashibetsu

In Ashibetsu in December, the total precipitation amount is 111 mm (4.4 in) accumulated over 26 days.

December Precipitation Trends in Ashibetsu

The chart displays monthly precipitation patterns in Ashibetsu, 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 Ashibetsu, December typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 26 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 Ashibetsu

In Ashibetsu in December humidity is 80%. With an average temperature of -5°C (23°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring extra layers to stay warm while navigating the frosty air.

December Average Humidity in Ashibetsu

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

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

Maximum UV Index Levels in Ashibetsu for December

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

Data source: Ashibetsu 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 Ashibetsu Compares to Other Months

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

This table compares monthly weather conditions in Ashibetsu, 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)	61 mm (2.4 inches)	84%	low
February Weather	-7°C (20°F)	82 mm (3.2 inches)	83%	moderate
March Weather	-1°C (31°F)	92 mm (3.6 inches)	81%	high
April Weather	5°C (41°F)	79 mm (3.1 inches)	81%	high
May Weather	12°C (54°F)	104 mm (4.1 inches)	86%	very high
June Weather	15°C (60°F)	106 mm (4.2 inches)	87%	very high
July Weather	20°C (68°F)	116 mm (4.6 inches)	93%	very high
August Weather	20°C (68°F)	185 mm (7.3 inches)	95%	very high
September Weather	16°C (61°F)	114 mm (4.5 inches)	88%	very high
October Weather	9°C (49°F)	149 mm (5.9 inches)	83%	moderate
November Weather	2°C (36°F)	145 mm (5.7 inches)	79%	moderate
December Weather	-5°C (23°F)	111 mm (4.4 inches)	80%	low