January Weather in Tsunagi, Japan

Last updated: August 23, 2025

In January, the average temperature in Tsunagi, Japan hovers around 7°C (44°F), making it a cool time of year. Expect temperatures to dip as low as -4°C (25°F) and reach a maximum of 20°C (68°F). Prepare for 61 mm (2.4 in) of precipitation over approximately 7 days, complemented by an average humidity of 75%. Stay cozy and enjoy the season!

January Temperature in Tsunagi

In January in Tsunagi, the average temperature is 7°C (44°F), with maximums reaching 20°C (68°F) and minimums dipping as low as -4°C (25°F). Travelers should be prepared for a mix of mild days and chilly nights, so layering clothing is essential.

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

The chart illustrates January temperature patterns in Tsunagi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tsunagi, January typically has an average temperature of 7°C (44°F), with highs reaching up to 20°C (68°F) and lows dropping to around -4°C (25°F).

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

January Precipitation in Tsunagi

In Tsunagi in January, the precipitation amount is 61 mm (2.4 in) over the course of 7 days.

January Precipitation Trends in Tsunagi

The chart displays monthly precipitation patterns in Tsunagi, 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 Tsunagi, January typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Tsunagi

In Tsunagi in January, humidity is 75%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and prompting frequent breaks to warm up indoors.

January Average Humidity in Tsunagi

This chart illustrates the average monthly humidity levels in Tsunagi, 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 Tsunagi is approximately 75%, 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 Tsunagi

In Tsunagi in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Tsunagi.

Maximum UV Index Levels in Tsunagi for January

The chart shows the monthly maximum UV Index (UVI) for Tsunagi 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 Tsunagi typically reaches 5, which falls under the moderate exposure category.

Data source: Tsunagi 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 Tsunagi Compares to Other Months

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

This table compares monthly weather conditions in Tsunagi, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	61 mm (2.4 inches)	75%	moderate
February Weather	8°C (46°F)	105 mm (4.1 inches)	71%	high
March Weather	12°C (54°F)	149 mm (5.9 inches)	71%	very high
April Weather	16°C (61°F)	143 mm (5.6 inches)	78%	extreme
May Weather	20°C (68°F)	234 mm (9.2 inches)	84%	extreme
June Weather	23°C (74°F)	342 mm (13.5 inches)	86%	extreme
July Weather	27°C (80°F)	465 mm (18.3 inches)	92%	extreme
August Weather	28°C (82°F)	242 mm (9.5 inches)	91%	extreme
September Weather	25°C (77°F)	228 mm (9.0 inches)	84%	extreme
October Weather	20°C (68°F)	131 mm (5.2 inches)	83%	very high
November Weather	14°C (57°F)	96 mm (3.8 inches)	81%	high
December Weather	8°C (47°F)	90 mm (3.5 inches)	79%	moderate