January Weather in Uonuma, Japan

Last updated: August 23, 2025

In Uonuma, Japan, the average temperature in January hovers around 0°C (31°F), with a minimum of -11°C (13°F) and a maximum reaching 12°C (54°F). Expect 254 mm (10.0 in) of precipitation spread over 22 days, coupled with high humidity levels averaging 88%. Prepare for a chilly and damp month ahead!

January Temperature in Uonuma

In January in Uonuma, the average temperature is 0°C (31°F). Maximums can reach 12°C (54°F), and minimums can be as low as -11°C (13°F). Travelers should be prepared for chilly weather, with potential for milder days and the possibility of frost, making it ideal for winter activities and cozy explorations.

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

The chart illustrates January temperature patterns in Uonuma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Uonuma, January typically has an average temperature of 0°C (31°F), with highs reaching up to 12°C (54°F) and lows dropping to around -11°C (13°F).

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

January Precipitation in Uonuma

In Uonuma in January, the total precipitation amount reaches 254 mm (10.0 in) during a span of 22 days.

January Precipitation Trends in Uonuma

The chart displays monthly precipitation patterns in Uonuma, 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 Uonuma, January typically receives around 254 mm (10.0 inches) of precipitation spread over approximately 22 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 Uonuma

In Uonuma in January humidity is 88%. With an average temperature of 0°C (31°F), this humidity feels like a biting chill that seeps into your bones, making every step outside a challenge as the air clings heavily around you, dampening the spirit of travel.

January Average Humidity in Uonuma

This chart illustrates the average monthly humidity levels in Uonuma, 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 Uonuma is approximately 88%, 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 Uonuma

In Uonuma 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 Uonuma for better planning.

Maximum UV Index Levels in Uonuma for January

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

Data source: Uonuma 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 Uonuma Compares to Other Months

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

This table compares monthly weather conditions in Uonuma, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (31°F)	254 mm (10.0 inches)	88%	moderate
February Weather	0°C (32°F)	244 mm (9.6 inches)	86%	moderate
March Weather	4°C (39°F)	193 mm (7.6 inches)	81%	very high
April Weather	9°C (49°F)	171 mm (6.7 inches)	78%	very high
May Weather	16°C (61°F)	168 mm (6.6 inches)	81%	very high
June Weather	19°C (67°F)	177 mm (7.0 inches)	88%	extreme
July Weather	24°C (75°F)	371 mm (14.6 inches)	92%	extreme
August Weather	25°C (77°F)	195 mm (7.7 inches)	92%	extreme
September Weather	21°C (69°F)	180 mm (7.1 inches)	89%	very high
October Weather	15°C (59°F)	228 mm (9.0 inches)	87%	high
November Weather	8°C (47°F)	178 mm (7.0 inches)	85%	moderate
December Weather	2°C (35°F)	283 mm (11.2 inches)	86%	moderate