January Weather in Motosu, Japan

Last updated: August 23, 2025

In January, the average temperature in Motosu, Japan hovers around 4°C (39°F). During this month, temperatures can dip to a chilling -8°C (18°F) at their lowest and soar to a comfortable 16°C (60°F) at their highest. Expect 71 mm (2.8 in) of precipitation spread over 11 days, contributing to an average humidity of 82%. Stay prepared for a mix of crisp days and occasional showers!

January Temperature in Motosu

In January in Motosu, the average temperature is 4°C (39°F), with maximums reaching up to 16°C (60°F) and minimums dropping as low as -8°C (18°F). Travelers should be prepared for chilly weather and pack accordingly to fully enjoy their visit.

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

The chart illustrates January temperature patterns in Motosu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Motosu, January typically has an average temperature of 4°C (39°F), with highs reaching up to 16°C (60°F) and lows dropping to around -8°C (18°F).

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

January Precipitation in Motosu

In Motosu in January, the precipitation amount is 71 mm (2.8 in) distributed over 11 days.

January Precipitation Trends in Motosu

The chart displays monthly precipitation patterns in Motosu, 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 Motosu, January typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 11 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 Motosu

In Motosu in January, humidity is 82%. With an average temperature of 4°C (39°F), this humidity feels like a chill that seeps into your bones, making it uncomfortable for traveling as you find yourself bundled up, yet still damp and cold.

January Average Humidity in Motosu

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

In Motosu 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 Motosu for better planning.

Maximum UV Index Levels in Motosu for January

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

Data source: Motosu 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 Motosu Compares to Other Months

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

This table compares monthly weather conditions in Motosu, 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 (39°F)	71 mm (2.8 inches)	82%	moderate
February Weather	4°C (40°F)	79 mm (3.1 inches)	79%	high
March Weather	9°C (48°F)	179 mm (7.1 inches)	74%	very high
April Weather	13°C (56°F)	223 mm (8.8 inches)	76%	very high
May Weather	18°C (65°F)	229 mm (9.0 inches)	83%	extreme
June Weather	22°C (71°F)	245 mm (9.7 inches)	87%	extreme
July Weather	26°C (78°F)	493 mm (19.4 inches)	93%	extreme
August Weather	27°C (82°F)	322 mm (12.7 inches)	91%	extreme
September Weather	23°C (74°F)	298 mm (11.7 inches)	87%	very high
October Weather	18°C (64°F)	234 mm (9.2 inches)	85%	high
November Weather	12°C (53°F)	74 mm (2.9 inches)	83%	moderate
December Weather	6°C (43°F)	94 mm (3.7 inches)	83%	moderate