January Weather in Shiraoi, Japan

Last updated: August 23, 2025

In January, the average temperature in Shiraoi, Japan hovers around -4°C (26°F), with extremes ranging from a brisk -14°C (6°F) to a mild 6°C (43°F). Expect about 58 mm (2.3 in) of precipitation spread over 10 days, contributing to a notably high average humidity of 84%. Prepare accordingly for a chilly and damp month!

January Temperature in Shiraoi

In January in Shiraoi, the average temperature is -4°C (26°F), with maximums that can reach 6°C (43°F) and minimums that can drop as low as -14°C (6°F). Travelers should be prepared for cold conditions and dress warmly to enjoy their time outdoors.

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

The chart illustrates January temperature patterns in Shiraoi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shiraoi, January typically has an average temperature of -4°C (26°F), with highs reaching up to 6°C (43°F) and lows dropping to around -14°C (6°F).

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

January Precipitation in Shiraoi

In Shiraoi in January, the total precipitation amount is 58 mm (2.3 in), measured over a span of 10 days.

January Precipitation Trends in Shiraoi

The chart displays monthly precipitation patterns in Shiraoi, 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 Shiraoi, January typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 10 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 Shiraoi

In Shiraoi in January, humidity is 84%. With an average temperature of -4°C (26°F), this humidity feels like a biting cold that seeps through your layers, making outdoor activities brisk and invigorating but challenging for sustained exploration.

January Average Humidity in Shiraoi

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

In Shiraoi 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 Shiraoi, you can visit Hourly UV Index in Shiraoi.

Maximum UV Index Levels in Shiraoi for January

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

Data source: Shiraoi 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 Shiraoi Compares to Other Months

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

This table compares monthly weather conditions in Shiraoi, 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 (26°F)	58 mm (2.3 inches)	84%	low
February Weather	-3°C (26°F)	53 mm (2.1 inches)	83%	moderate
March Weather	1°C (34°F)	88 mm (3.5 inches)	81%	moderate
April Weather	5°C (42°F)	96 mm (3.8 inches)	81%	high
May Weather	10°C (51°F)	92 mm (3.6 inches)	86%	very high
June Weather	14°C (58°F)	131 mm (5.2 inches)	87%	very high
July Weather	18°C (66°F)	113 mm (4.4 inches)	93%	very high
August Weather	20°C (68°F)	194 mm (7.6 inches)	95%	very high
September Weather	18°C (64°F)	142 mm (5.6 inches)	88%	very high
October Weather	12°C (54°F)	140 mm (5.5 inches)	83%	high
November Weather	6°C (43°F)	107 mm (4.2 inches)	79%	moderate
December Weather	-1°C (30°F)	64 mm (2.5 inches)	80%	low