January Weather in Yabu, Japan

Last updated: August 23, 2025

In January, the average temperature in Yabu, Japan hovers around 4°C (39°F). You can expect a minimum chill of -6°C (22°F) to a max of 15°C (60°F). The weather brings along a substantial precipitation amount of 89 mm (3.5 in) over approximately 18 days, contributing to an average humidity of 82%. Stay prepared for a cool and damp month!

January Temperature in Yabu

In January in Yabu, the average temperature is 4°C (39°F). The maximum can reach 15°C (60°F) and the minimum can be as low as -6°C (22°F). Travelers should prepare for a mix of cool and chilly days, making it a great time for layering and enjoying seasonal activities.

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

The chart illustrates January temperature patterns in Yabu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yabu, January typically has an average temperature of 4°C (39°F), with highs reaching up to 15°C (60°F) and lows dropping to around -6°C (22°F).

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

January Precipitation in Yabu

In Yabu in January, the precipitation amount is 89 mm (3.5 in) accumulated over 18 days.

January Precipitation Trends in Yabu

The chart displays monthly precipitation patterns in Yabu, 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 Yabu, January typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 18 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 Yabu

In Yabu in January, humidity is 82%. With an average temperature of 4°C (39°F), this humidity feels like a chill that seeps into your bones, making it uncomfortable for traveling as you find yourself bundled up, yet still damp and cold.

January Average Humidity in Yabu

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

In Yabu 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 Yabu for better planning.

Maximum UV Index Levels in Yabu for January

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

Data source: Yabu 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 Yabu Compares to Other Months

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

This table compares monthly weather conditions in Yabu, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	89 mm (3.5 inches)	82%	moderate
February Weather	4°C (40°F)	89 mm (3.5 inches)	79%	high
March Weather	8°C (47°F)	137 mm (5.4 inches)	73%	very high
April Weather	13°C (55°F)	140 mm (5.5 inches)	74%	very high
May Weather	18°C (65°F)	127 mm (5.0 inches)	84%	extreme
June Weather	21°C (70°F)	209 mm (8.2 inches)	86%	extreme
July Weather	26°C (79°F)	339 mm (13.4 inches)	92%	extreme
August Weather	27°C (82°F)	273 mm (10.8 inches)	92%	extreme
September Weather	23°C (74°F)	259 mm (10.2 inches)	87%	very high
October Weather	18°C (64°F)	218 mm (8.6 inches)	85%	high
November Weather	12°C (53°F)	69 mm (2.7 inches)	84%	moderate
December Weather	6°C (44°F)	116 mm (4.6 inches)	82%	moderate