January Weather in Tomakomai, Japan

Last updated: August 23, 2025

In January, the average temperature in Tomakomai, Japan is a chilly -4°C (25°F). Temperatures can vary significantly, with a minimum of -14°C (8°F) and a maximum of 6°C (44°F). Expect about 49 mm (1.9 in) of precipitation spread over 9 days, and prepare for a high average humidity of 84%.

January Temperature in Tomakomai

In January in Tomakomai, the average temperature is -4°C (25°F), with maximums reaching 6°C (44°F) and minimums dropping as low as -14°C (8°F). It's essential to prepare for cold weather and dress warmly if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Tomakomai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tomakomai, January typically has an average temperature of -4°C (25°F), with highs reaching up to 6°C (44°F) and lows dropping to around -14°C (8°F).

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

January Precipitation in Tomakomai

In Tomakomai in January, the total precipitation amount is 49 mm (1.9 in) spread over 9 days.

January Precipitation Trends in Tomakomai

The chart displays monthly precipitation patterns in Tomakomai, 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 Tomakomai, January typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 9 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 Tomakomai

In Tomakomai in January, humidity is 84%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.

January Average Humidity in Tomakomai

This chart illustrates the average monthly humidity levels in Tomakomai, 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 Tomakomai is approximately 84%, 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 Tomakomai

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

Maximum UV Index Levels in Tomakomai for January

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

Data source: Tomakomai 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 Tomakomai Compares to Other Months

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

This table compares monthly weather conditions in Tomakomai, 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 (25°F)	49 mm (1.9 inches)	84%	low
February Weather	-4°C (26°F)	53 mm (2.1 inches)	83%	moderate
March Weather	1°C (34°F)	89 mm (3.5 inches)	81%	moderate
April Weather	5°C (42°F)	93 mm (3.7 inches)	81%	high
May Weather	11°C (51°F)	90 mm (3.6 inches)	86%	very high
June Weather	14°C (58°F)	128 mm (5.1 inches)	87%	very high
July Weather	19°C (66°F)	121 mm (4.7 inches)	93%	very high
August Weather	20°C (69°F)	206 mm (8.1 inches)	95%	very high
September Weather	18°C (64°F)	145 mm (5.7 inches)	88%	very high
October Weather	12°C (54°F)	143 mm (5.6 inches)	83%	moderate
November Weather	6°C (42°F)	102 mm (4.0 inches)	79%	moderate
December Weather	-1°C (30°F)	62 mm (2.4 inches)	80%	low