January Weather in Tsu, Japan

Last updated: August 23, 2025

In January, the average temperature in Tsu, Japan hovers around 5°C (42°F). Visitors can expect a minimum chill of -3°C (27°F) and a pleasant maximum of 15°C (59°F). The region experiences about 55 mm (2.2 in) of precipitation over approximately 6 days, keeping the atmosphere refreshingly crisp, complemented by an average humidity of 82%.

January Temperature in Tsu

In January in Tsu, the average temperature is 5°C (42°F). Maximums can reach 15°C (59°F), while minimums can drop as low as -3°C (27°F). Be prepared for a mix of cool and mild weather if you're planning to travel during this time.

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

The chart illustrates January 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, January typically has an average temperature of 5°C (42°F), with highs reaching up to 15°C (59°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Tsu

In Tsu in January, the total precipitation amount is 55 mm (2.2 in) spread over 6 days.

January Precipitation Trends in Tsu

The chart displays monthly precipitation patterns in Tsu, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Tsu, January typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 6 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Tsu

In Tsu in January 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.

January Average Humidity in Tsu

This chart illustrates the average monthly humidity levels in Tsu, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Tsu is approximately 82%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Tsu

In Tsu in January, 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 January

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

Data source: Tsu January 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 January 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 January’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 January’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