December Weather in Tsu, Japan

Last updated: August 23, 2025

In December, the average temperature in Tsu, Japan hovers around 8°C (46°F). Expect a range from a chilly -1°C (30°F) to a pleasant 21°C (70°F). During this month, the area receives approximately 66 mm (2.6 in) of precipitation over 7 days, coupled with an average humidity level of 83%. Stay prepared for varying weather conditions!

December Temperature in Tsu

In December in Tsu, the average temperature is 8°C (46°F), with maximums reaching up to 21°C (70°F) and minimums dropping as low as -1°C (30°F). This variability makes it essential to pack layers for your visit to ensure comfort throughout the day.

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

The chart illustrates December temperature patterns in Tsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tsu, December typically has an average temperature of 8°C (46°F), with highs reaching up to 21°C (70°F) and lows dropping to around -1°C (30°F).

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

December Precipitation in Tsu

In Tsu in December, the precipitation amount is 66 mm (2.6 in) over a period of 7 days.

December Precipitation Trends in Tsu

The chart displays monthly precipitation patterns in Tsu, 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 Tsu, December typically receives around 66 mm (2.6 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 Tsu

In Tsu in December, humidity is 83%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making even short outings feel quite uncomfortable and prompting travelers to bundle up and seek shelter more frequently.

December Average Humidity in Tsu

This chart illustrates the average monthly humidity levels in Tsu, 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 Tsu is approximately 83%, 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 Tsu

In Tsu in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Tsu for better planning.

Maximum UV Index Levels in Tsu for December

The chart shows the monthly maximum UV Index (UVI) for Tsu 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 Tsu typically reaches 4, which falls under the moderate exposure category.

Data source: Tsu 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 Tsu Compares to Other Months

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

This table compares monthly weather conditions in Tsu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	55 mm (2.2 inches)	82%	moderate
February Weather	6°C (43°F)	60 mm (2.4 inches)	79%	high
March Weather	10°C (50°F)	157 mm (6.2 inches)	74%	very high
April Weather	14°C (57°F)	149 mm (5.8 inches)	76%	extreme
May Weather	19°C (66°F)	177 mm (7.0 inches)	83%	extreme
June Weather	22°C (72°F)	209 mm (8.2 inches)	87%	extreme
July Weather	26°C (79°F)	320 mm (12.6 inches)	93%	extreme
August Weather	28°C (82°F)	212 mm (8.4 inches)	91%	extreme
September Weather	24°C (76°F)	223 mm (8.8 inches)	87%	very high
October Weather	19°C (66°F)	343 mm (13.5 inches)	85%	high
November Weather	13°C (56°F)	62 mm (2.4 inches)	83%	moderate
December Weather	8°C (46°F)	66 mm (2.6 inches)	83%	moderate