January Weather in Shinshimokawa, Japan

Last updated: August 23, 2025

In January, the average temperature in Shinshimokawa, Japan hovers around -9°C (17°F). Expect minimums dipping to -24°C (-12°F) and maximums reaching up to 3°C (38°F). With an average precipitation of 64 mm (2.5 in) over 16 days, and a high humidity level of 87%, be prepared for a cold and damp month ahead!

January Temperature in Shinshimokawa

In January in Shinshimokawa, the average temperature is -9°C (17°F), with maximums reaching up to 3°C (38°F) and minimums dropping as low as -24°C (-12°F). It’s advisable to pack warm clothing if you plan to visit during this chilly period.

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

The chart illustrates January temperature patterns in Shinshimokawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shinshimokawa, January typically has an average temperature of -9°C (17°F), with highs reaching up to 3°C (38°F) and lows dropping to around -24°C (-12°F).

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

January Precipitation in Shinshimokawa

In Shinshimokawa in January, the precipitation amount is 64 mm (2.5 in) spread over 16 days.

January Precipitation Trends in Shinshimokawa

The chart displays monthly precipitation patterns in Shinshimokawa, 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 Shinshimokawa, January typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 16 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 Shinshimokawa

In Shinshimokawa in January humidity is 87%. With an average temperature of -9°C (17°F), this humidity feels like an icy blanket wrapping around you, making travel particularly challenging as the cold air combines with the moisture to create a biting chill that seeps into your bones.

January Average Humidity in Shinshimokawa

This chart illustrates the average monthly humidity levels in Shinshimokawa, 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 Shinshimokawa is approximately 87%, 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 Shinshimokawa

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

Maximum UV Index Levels in Shinshimokawa for January

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

Data source: Shinshimokawa 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 Shinshimokawa Compares to Other Months

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

This table compares monthly weather conditions in Shinshimokawa, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (17°F)	64 mm (2.5 inches)	87%	low
February Weather	-7°C (19°F)	76 mm (3.0 inches)	86%	moderate
March Weather	-2°C (29°F)	84 mm (3.3 inches)	85%	high
April Weather	4°C (40°F)	69 mm (2.7 inches)	85%	high
May Weather	11°C (53°F)	94 mm (3.7 inches)	88%	very high
June Weather	14°C (58°F)	97 mm (3.8 inches)	88%	very high
July Weather	19°C (67°F)	100 mm (3.9 inches)	93%	very high
August Weather	19°C (66°F)	158 mm (6.2 inches)	95%	very high
September Weather	15°C (60°F)	80 mm (3.1 inches)	88%	high
October Weather	9°C (48°F)	138 mm (5.4 inches)	80%	moderate
November Weather	2°C (36°F)	119 mm (4.7 inches)	78%	moderate
December Weather	-5°C (23°F)	86 mm (3.4 inches)	82%	low