January Weather in Yoichi, Japan

Last updated: August 23, 2025

In January, the average temperature in Yoichi, Japan hovers around -3°C (26°F), with lows dipping to -12°C (10°F) and highs reaching up to 5°C (41°F). This month generally sees 93 mm (3.7 in) of precipitation spread over 21 days, contributing to an average humidity of 84%. So, bundle up and be prepared for a chilly, damp adventure!

January Temperature in Yoichi

In January in Yoichi, the average temperature is -3°C (26°F), with maximums reaching up to 5°C (41°F) and minimums dropping as low as -12°C (10°F). Travelers should prepare for chilly conditions and dress warmly to fully enjoy their visit.

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

The chart illustrates January temperature patterns in Yoichi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yoichi, January typically has an average temperature of -3°C (26°F), with highs reaching up to 5°C (41°F) and lows dropping to around -12°C (10°F).

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

January Precipitation in Yoichi

In Yoichi in January, the total precipitation amount is 93 mm (3.7 in) spread over 21 days.

January Precipitation Trends in Yoichi

The chart displays monthly precipitation patterns in Yoichi, 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 Yoichi, January typically receives around 93 mm (3.7 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 Yoichi

In Yoichi in January, humidity is 84%. With an average temperature of -3°C (26°F), this humidity feels like an icy mist clinging to your skin, making every breath a struggle as the cold seeps in, creating a challenging environment for traveling.

January Average Humidity in Yoichi

This chart illustrates the average monthly humidity levels in Yoichi, 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 Yoichi is approximately 84%, 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 Yoichi

In Yoichi in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Yoichi, you can visit Hourly UV Index in Yoichi.

Maximum UV Index Levels in Yoichi for January

The chart shows the monthly maximum UV Index (UVI) for Yoichi 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 Yoichi typically reaches 2, which falls under the low exposure category.

Data source: Yoichi 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 Yoichi Compares to Other Months

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

This table compares monthly weather conditions in Yoichi, 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 (26°F)	93 mm (3.7 inches)	84%	low
February Weather	-3°C (27°F)	103 mm (4.0 inches)	83%	moderate
March Weather	1°C (35°F)	93 mm (3.7 inches)	81%	moderate
April Weather	5°C (42°F)	76 mm (3.0 inches)	81%	high
May Weather	12°C (53°F)	83 mm (3.3 inches)	86%	very high
June Weather	15°C (59°F)	99 mm (3.9 inches)	87%	very high
July Weather	20°C (69°F)	78 mm (3.1 inches)	93%	very high
August Weather	21°C (71°F)	149 mm (5.9 inches)	95%	very high
September Weather	18°C (65°F)	106 mm (4.2 inches)	88%	very high
October Weather	12°C (54°F)	146 mm (5.8 inches)	83%	moderate
November Weather	5°C (42°F)	170 mm (6.7 inches)	79%	moderate
December Weather	-1°C (30°F)	146 mm (5.7 inches)	80%	low