January Weather in Chikuma, Japan

Last updated: August 23, 2025

In January, the average temperature in Chikuma, Japan hovers around -3°C (27°F), with extremes ranging from a frigid -15°C (5°F) to a milder 10°C (50°F). Expect approximately 151 mm (6.0 in) of rainfall spread over 21 days, contributing to an average humidity of 88%. Dress warmly and prepare for a damp and chilly month ahead!

January Temperature in Chikuma

In January in Chikuma, the average temperature is -3°C (27°F), with maximums reaching 10°C (50°F) and minimums plummeting to as low as -15°C (5°F). Be sure to pack warm clothing and prepare for variable weather conditions if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Chikuma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chikuma, January typically has an average temperature of -3°C (27°F), with highs reaching up to 10°C (50°F) and lows dropping to around -15°C (5°F).

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

January Precipitation in Chikuma

In Chikuma in January, the total precipitation amount is 151 mm (6.0 in) over the course of 21 days.

January Precipitation Trends in Chikuma

The chart displays monthly precipitation patterns in Chikuma, 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 Chikuma, January typically receives around 151 mm (6.0 inches) of precipitation spread over approximately 21 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 Chikuma

In Chikuma in January humidity is 88%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making outdoor exploration less inviting as the dampness clings to your clothing and slows your movements.

January Average Humidity in Chikuma

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

In Chikuma 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 Chikuma for better planning.

Maximum UV Index Levels in Chikuma for January

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

Data source: Chikuma 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 Chikuma Compares to Other Months

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

This table compares monthly weather conditions in Chikuma, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	151 mm (6.0 inches)	88%	moderate
February Weather	-2°C (29°F)	138 mm (5.4 inches)	86%	high
March Weather	3°C (38°F)	172 mm (6.8 inches)	81%	very high
April Weather	8°C (47°F)	182 mm (7.2 inches)	78%	very high
May Weather	14°C (58°F)	227 mm (8.9 inches)	81%	extreme
June Weather	18°C (64°F)	256 mm (10.1 inches)	88%	extreme
July Weather	22°C (72°F)	437 mm (17.2 inches)	92%	extreme
August Weather	23°C (74°F)	276 mm (10.9 inches)	92%	extreme
September Weather	19°C (66°F)	285 mm (11.2 inches)	89%	very high
October Weather	13°C (55°F)	277 mm (10.9 inches)	87%	high
November Weather	6°C (44°F)	119 mm (4.7 inches)	85%	moderate
December Weather	0°C (33°F)	163 mm (6.4 inches)	86%	moderate