January Weather in Shonai, Japan

Last updated: August 23, 2025

In January, the average temperature in Shonai, Japan hovers around 0°C (33°F), providing a chilly backdrop to the month. Expect minimum temperatures to dip to -8°C (18°F) and maximums to reach up to 8°C (47°F). With an average precipitation of 181 mm (7.1 in) spread across 22 days, it's wise to keep an umbrella handy. Additionally, the average humidity sits at a brisk 79%, giving the air a distinct chill.

January Temperature in Shonai

In January in Shonai, the average temperature is 0°C (33°F). Maximums can reach 8°C (47°F) and minimums can be as low as -8°C (18°F). Travelers should prepare for chilly weather and pack accordingly.

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

The chart illustrates January temperature patterns in Shonai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shonai, January typically has an average temperature of 0°C (33°F), with highs reaching up to 8°C (47°F) and lows dropping to around -8°C (18°F).

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

January Precipitation in Shonai

In Shonai in January, the total precipitation amount reaches 181 mm (7.1 in) over the course of 22 days.

January Precipitation Trends in Shonai

The chart displays monthly precipitation patterns in Shonai, 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 Shonai, January typically receives around 181 mm (7.1 inches) of precipitation spread over approximately 22 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 Shonai

In Shonai in January humidity is 79%. With an average temperature of 0°C (33°F), this humidity feels like a biting chill that cuts through your clothes, making traveling quite uncomfortable as the dampness clings to your skin and saps your energy.

January Average Humidity in Shonai

This chart illustrates the average monthly humidity levels in Shonai, 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 Shonai is approximately 79%, 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 Shonai

In Shonai 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 Shonai, you can check the information here.

Maximum UV Index Levels in Shonai for January

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

Data source: Shonai 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 Shonai Compares to Other Months

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

This table compares monthly weather conditions in Shonai, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	181 mm (7.1 inches)	79%	moderate
February Weather	1°C (34°F)	171 mm (6.7 inches)	78%	moderate
March Weather	4°C (40°F)	147 mm (5.8 inches)	76%	high
April Weather	9°C (49°F)	144 mm (5.7 inches)	78%	very high
May Weather	15°C (60°F)	137 mm (5.4 inches)	86%	very high
June Weather	19°C (67°F)	147 mm (5.8 inches)	90%	very high
July Weather	24°C (75°F)	268 mm (10.5 inches)	93%	extreme
August Weather	25°C (77°F)	269 mm (10.6 inches)	92%	extreme
September Weather	20°C (69°F)	169 mm (6.6 inches)	84%	very high
October Weather	15°C (59°F)	190 mm (7.5 inches)	80%	high
November Weather	9°C (48°F)	169 mm (6.7 inches)	76%	moderate
December Weather	3°C (37°F)	241 mm (9.5 inches)	78%	moderate