December Weather in Shiso, Japan

Last updated: August 23, 2025

In Shiso, Japan, the average temperature in December hovers around 6°C (44°F). Temperatures can vary significantly, with a minimum of -5°C (24°F) and a maximum reaching up to 20°C (68°F). Expect 58 mm (2.3 in) of precipitation spread over 7 days, alongside an average humidity of 82%.

December Temperature in Shiso

In December in Shiso, the average temperature is 6°C (44°F). Maximums can reach 20°C (68°F) and minimums can be as low as -5°C (24°F). It's a great time to visit if you enjoy cool weather and want to experience varied temperatures.

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

The chart illustrates December temperature patterns in Shiso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shiso, December typically has an average temperature of 6°C (44°F), with highs reaching up to 20°C (68°F) and lows dropping to around -5°C (24°F).

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

December Precipitation in Shiso

In Shiso in December, the precipitation amount is 58 mm (2.3 in) over the course of 7 days.

December Precipitation Trends in Shiso

The chart displays monthly precipitation patterns in Shiso, 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 Shiso, December typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 7 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 Shiso

In Shiso in December humidity is 82%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that settles into your bones, making travel uncomfortable as every step feels heavy with moisture and the cool air seems to cling to your skin.

December Average Humidity in Shiso

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

In Shiso 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 Shiso, you can check the information here.

Maximum UV Index Levels in Shiso for December

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

Data source: Shiso 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 Shiso Compares to Other Months

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

This table compares monthly weather conditions in Shiso, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	42 mm (1.7 inches)	82%	moderate
February Weather	5°C (41°F)	56 mm (2.2 inches)	79%	high
March Weather	9°C (48°F)	116 mm (4.6 inches)	73%	very high
April Weather	13°C (56°F)	135 mm (5.3 inches)	74%	extreme
May Weather	18°C (65°F)	127 mm (5.0 inches)	84%	extreme
June Weather	22°C (71°F)	170 mm (6.7 inches)	86%	extreme
July Weather	26°C (79°F)	326 mm (12.8 inches)	92%	extreme
August Weather	27°C (82°F)	241 mm (9.5 inches)	92%	extreme
September Weather	23°C (74°F)	237 mm (9.3 inches)	87%	very high
October Weather	18°C (64°F)	205 mm (8.1 inches)	85%	high
November Weather	12°C (53°F)	38 mm (1.5 inches)	84%	moderate
December Weather	6°C (44°F)	58 mm (2.3 inches)	82%	moderate