January Weather in Semboku, Japan

Last updated: August 23, 2025

In January, the average temperature in Semboku, Japan hovers around -4°C (25°F), with a minimum dipping to a brisk -17°C (2°F) and a maximum reaching a mild 4°C (40°F). Expect 105 mm (4.1 in) of precipitation over approximately 19 days, contributing to an average humidity of 80%.

January Temperature in Semboku

In January in Semboku, the average temperature is -4°C (25°F), with maximums reaching 4°C (40°F) and minimums dropping as low as -17°C (2°F). It's advisable to pack warm clothing and be prepared for chilly conditions if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Semboku, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Semboku, January typically has an average temperature of -4°C (25°F), with highs reaching up to 4°C (40°F) and lows dropping to around -17°C (2°F).

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

January Precipitation in Semboku

In Semboku in January, the total precipitation amount is 105 mm (4.1 in), recorded over the course of 19 days.

January Precipitation Trends in Semboku

The chart displays monthly precipitation patterns in Semboku, 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 Semboku, January typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 19 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 Semboku

In Semboku in January humidity is 80%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill, making traveling outdoors quite uncomfortable as the damp air clings to your skin, intensifying the cold and sapping your warmth with every gust of wind.

January Average Humidity in Semboku

This chart illustrates the average monthly humidity levels in Semboku, 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 Semboku is approximately 80%, 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 Semboku

In Semboku in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Semboku, you can check the information here.

Maximum UV Index Levels in Semboku for January

The chart shows the monthly maximum UV Index (UVI) for Semboku 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 Semboku typically reaches 3, which falls under the moderate exposure category.

Data source: Semboku 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 Semboku Compares to Other Months

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

This table compares monthly weather conditions in Semboku, 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 (25°F)	105 mm (4.1 inches)	80%	moderate
February Weather	-3°C (26°F)	140 mm (5.5 inches)	79%	moderate
March Weather	1°C (34°F)	141 mm (5.6 inches)	77%	high
April Weather	6°C (44°F)	170 mm (6.7 inches)	75%	very high
May Weather	13°C (56°F)	160 mm (6.3 inches)	80%	very high
June Weather	17°C (63°F)	182 mm (7.2 inches)	87%	very high
July Weather	21°C (71°F)	237 mm (9.3 inches)	92%	very high
August Weather	22°C (73°F)	238 mm (9.4 inches)	92%	extreme
September Weather	18°C (65°F)	170 mm (6.7 inches)	86%	very high
October Weather	12°C (54°F)	179 mm (7.1 inches)	82%	high
November Weather	5°C (42°F)	134 mm (5.3 inches)	79%	moderate
December Weather	-1°C (30°F)	153 mm (6.0 inches)	80%	moderate