January Weather in Sumoto, Japan

Last updated: August 23, 2025

In January, the average temperature in Sumoto, Japan hovers around 8°C (46°F), with a minimum of 1°C (34°F) and a maximum reaching up to 17°C (63°F). During this month, expect precipitation of about 65 mm (2.6 in) over roughly 10 days, contributing to an average humidity of 82%. Stay prepared for a mix of cool air and moisture!

January Temperature in Sumoto

In January in Sumoto, the average temperature is 8°C (46°F). The maximum can reach 17°C (63°F), while the minimum can drop as low as 1°C (34°F). It's a good time to pack layers and enjoy the mild weather while exploring the local attractions.

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

The chart illustrates January temperature patterns in Sumoto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumoto, January typically has an average temperature of 8°C (46°F), with highs reaching up to 17°C (63°F) and lows dropping to around 1°C (34°F).

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

January Precipitation in Sumoto

In Sumoto in January, the precipitation amount is 65 mm (2.6 in) over a span of 10 days.

January Precipitation Trends in Sumoto

The chart displays monthly precipitation patterns in Sumoto, 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 Sumoto, January typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Sumoto

In Sumoto in January humidity is 82%. With an average temperature of 8°C (46°F), this humidity feels like a thick, damp blanket wrapping around you, making travel uncomfortable and creating a sense of heaviness in the air that can sap your energy quickly.

January Average Humidity in Sumoto

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

In Sumoto 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 Sumoto for better planning.

Maximum UV Index Levels in Sumoto for January

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

Data source: Sumoto 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 Sumoto Compares to Other Months

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

This table compares monthly weather conditions in Sumoto, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	65 mm (2.6 inches)	82%	moderate
February Weather	8°C (46°F)	74 mm (2.9 inches)	79%	moderate
March Weather	10°C (51°F)	117 mm (4.6 inches)	73%	very high
April Weather	14°C (57°F)	132 mm (5.2 inches)	74%	extreme
May Weather	18°C (64°F)	171 mm (6.7 inches)	84%	extreme
June Weather	21°C (70°F)	192 mm (7.5 inches)	86%	extreme
July Weather	25°C (78°F)	291 mm (11.5 inches)	92%	extreme
August Weather	27°C (81°F)	154 mm (6.1 inches)	92%	extreme
September Weather	25°C (77°F)	206 mm (8.1 inches)	87%	very high
October Weather	20°C (69°F)	292 mm (11.5 inches)	85%	high
November Weather	16°C (60°F)	68 mm (2.7 inches)	84%	moderate
December Weather	11°C (51°F)	83 mm (3.3 inches)	82%	moderate