January Weather in Hamatonbetsu, Japan

Last updated: August 23, 2025

In January, the average temperature in Hamatonbetsu, Japan hovers around -4°C (25°F), with extremes ranging from a brisk -12°C (11°F) to a mild 3°C (39°F). Expect 71 mm (2.8 in) of precipitation spread over 18 days, accompanied by a high average humidity of 87%. Be prepared for a chilly, damp experience!

January Temperature in Hamatonbetsu

In January in Hamatonbetsu, the average temperature is -4°C (25°F). The maximum can reach 3°C (39°F), while the minimum can be as low as -12°C (11°F). It’s essential to prepare for cold weather and dress warmly when traveling during this time.

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

The chart illustrates January temperature patterns in Hamatonbetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hamatonbetsu, January typically has an average temperature of -4°C (25°F), with highs reaching up to 3°C (39°F) and lows dropping to around -12°C (11°F).

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

January Precipitation in Hamatonbetsu

In Hamatonbetsu in January, the precipitation amount is 71 mm (2.8 in) over the course of 18 days.

January Precipitation Trends in Hamatonbetsu

The chart displays monthly precipitation patterns in Hamatonbetsu, 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 Hamatonbetsu, January typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 18 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 Hamatonbetsu

In Hamatonbetsu in January humidity is 87%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that clings to your skin, making every step outside feel like an endeavor as the cold damp air numbs your senses and weighs you down, creating an atmosphere that is both invigorating and challenging for traveling.

January Average Humidity in Hamatonbetsu

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

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

Maximum UV Index Levels in Hamatonbetsu for January

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

Data source: Hamatonbetsu 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 Hamatonbetsu Compares to Other Months

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

This table compares monthly weather conditions in Hamatonbetsu, 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)	71 mm (2.8 inches)	87%	low
February Weather	-5°C (23°F)	55 mm (2.2 inches)	84%	moderate
March Weather	-1°C (31°F)	70 mm (2.7 inches)	83%	moderate
April Weather	4°C (39°F)	56 mm (2.2 inches)	84%	high
May Weather	8°C (46°F)	83 mm (3.3 inches)	88%	very high
June Weather	11°C (52°F)	92 mm (3.6 inches)	88%	very high
July Weather	16°C (61°F)	100 mm (3.9 inches)	93%	very high
August Weather	18°C (65°F)	164 mm (6.5 inches)	94%	very high
September Weather	17°C (63°F)	76 mm (3.0 inches)	86%	high
October Weather	12°C (54°F)	126 mm (5.0 inches)	79%	moderate
November Weather	5°C (41°F)	136 mm (5.4 inches)	77%	moderate
December Weather	-1°C (30°F)	129 mm (5.1 inches)	83%	low