January Weather in Toyoshina, Japan

Last updated: August 23, 2025

In Toyoshina, Japan, the average temperature in January hovers around -2°C (28°F). Expect chilly extremes, with minimums plummeting to -16°C (4°F) and occasionally reaching a maximum of 11°C (52°F). This month also sees 99 mm (3.9 in) of precipitation over approximately 16 days, contributing to an average humidity of 88%. Prepare for a brisk and damp atmosphere during your visit!

January Temperature in Toyoshina

In January, in Toyoshina, the average temperature is -2°C (28°F). The maximum can reach 11°C (52°F), while the minimum can drop as low as -16°C (4°F). Travelers should be prepared for chilly temperatures and dress accordingly to fully enjoy their visit.

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

The chart illustrates January temperature patterns in Toyoshina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Toyoshina, January typically has an average temperature of -2°C (28°F), with highs reaching up to 11°C (52°F) and lows dropping to around -16°C (4°F).

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

January Precipitation in Toyoshina

In Toyoshina in January, the total precipitation amount is 99 mm (3.9 in) over the course of 16 days.

January Precipitation Trends in Toyoshina

The chart displays monthly precipitation patterns in Toyoshina, 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 Toyoshina, January typically receives around 99 mm (3.9 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 Toyoshina

In Toyoshina in January humidity is 88%. With an average temperature of -2°C (28°F), this humidity feels like an icy cling to your skin, making every breath feel brisk and sharp, while the dampness cuts through layers of clothing, leaving travelers yearning for warmth and comfort.

January Average Humidity in Toyoshina

This chart illustrates the average monthly humidity levels in Toyoshina, 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 Toyoshina is approximately 88%, 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 Toyoshina

In Toyoshina 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 Toyoshina for better planning.

Maximum UV Index Levels in Toyoshina for January

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

Data source: Toyoshina 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 Toyoshina Compares to Other Months

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

This table compares monthly weather conditions in Toyoshina, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	99 mm (3.9 inches)	88%	moderate
February Weather	-1°C (30°F)	97 mm (3.8 inches)	86%	high
March Weather	4°C (40°F)	152 mm (6.0 inches)	81%	very high
April Weather	9°C (48°F)	156 mm (6.1 inches)	78%	very high
May Weather	15°C (59°F)	179 mm (7.0 inches)	81%	extreme
June Weather	18°C (65°F)	194 mm (7.7 inches)	88%	extreme
July Weather	22°C (72°F)	333 mm (13.1 inches)	92%	extreme
August Weather	23°C (75°F)	197 mm (7.8 inches)	92%	extreme
September Weather	19°C (66°F)	222 mm (8.7 inches)	89%	very high
October Weather	13°C (56°F)	255 mm (10.1 inches)	87%	high
November Weather	7°C (44°F)	83 mm (3.3 inches)	85%	moderate
December Weather	1°C (34°F)	109 mm (4.3 inches)	86%	moderate