January Weather in Usuki, Japan

Last updated: August 23, 2025

In Usuki, Japan, the average temperature in January hovers around 7°C (44°F), with the mercury dipping as low as -3°C (27°F) and soaring up to 19°C (67°F). Expect about 56 mm (2.2 in) of precipitation over the course of 3 days, accompanied by an average humidity of 75%.

January Temperature in Usuki

In January in Usuki, the average temperature is 7°C (44°F). Maximums can reach 19°C (67°F) and minimums can be as low as -3°C (27°F). Pack for a variety of weather conditions to fully enjoy your trip.

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

The chart illustrates January temperature patterns in Usuki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Usuki, January typically has an average temperature of 7°C (44°F), with highs reaching up to 19°C (67°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Usuki

In Usuki in January, the precipitation amount is 56 mm (2.2 in) over the course of 3 days.

January Precipitation Trends in Usuki

The chart displays monthly precipitation patterns in Usuki, 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 Usuki, January typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 3 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 Usuki

In Usuki 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 Usuki

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

In Usuki 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 Usuki for better planning.

Maximum UV Index Levels in Usuki for January

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

Data source: Usuki 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 Usuki Compares to Other Months

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

This table compares monthly weather conditions in Usuki, 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)	56 mm (2.2 inches)	75%	moderate
February Weather	7°C (46°F)	75 mm (2.9 inches)	71%	high
March Weather	11°C (53°F)	116 mm (4.6 inches)	71%	very high
April Weather	15°C (60°F)	110 mm (4.3 inches)	78%	extreme
May Weather	20°C (68°F)	149 mm (5.9 inches)	84%	extreme
June Weather	23°C (74°F)	207 mm (8.2 inches)	86%	extreme
July Weather	27°C (81°F)	336 mm (13.2 inches)	92%	extreme
August Weather	28°C (83°F)	228 mm (9.0 inches)	91%	extreme
September Weather	25°C (77°F)	240 mm (9.5 inches)	84%	extreme
October Weather	20°C (67°F)	233 mm (9.2 inches)	83%	high
November Weather	14°C (57°F)	51 mm (2.0 inches)	81%	high
December Weather	8°C (47°F)	52 mm (2.0 inches)	79%	moderate