January Weather in Hekinan, Japan

Last updated: August 23, 2025

In January, the average temperature in Hekinan, Japan hovers around 6°C (43°F), making it a cool time of year. Expect temperature fluctuations, with a minimum of -3°C (26°F) and a maximum reaching 18°C (64°F). During this month, you can anticipate about 43 mm (1.7 in) of precipitation spread across 4 days, contributing to an average humidity level of 82%.

January Temperature in Hekinan

In January in Hekinan, the average temperature is 6°C (43°F), with maximums reaching up to 18°C (64°F) and minimums dropping as low as -3°C (26°F). This varied climate makes it essential for travelers to pack layers to comfortably enjoy their visit.

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

The chart illustrates January temperature patterns in Hekinan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hekinan, January typically has an average temperature of 6°C (43°F), with highs reaching up to 18°C (64°F) and lows dropping to around -3°C (26°F).

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

January Precipitation in Hekinan

In Hekinan in January, the precipitation amount is 43 mm (1.7 in) over the course of 4 days.

January Precipitation Trends in Hekinan

The chart displays monthly precipitation patterns in Hekinan, 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 Hekinan, January typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 4 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 Hekinan

In Hekinan in January, humidity is 82%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel less invigorating and more uncomfortable, as the heavy air can leave you feeling sluggish and fatigued during your travels.

January Average Humidity in Hekinan

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

In Hekinan 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 Hekinan for better planning.

Maximum UV Index Levels in Hekinan for January

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

Data source: Hekinan 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 Hekinan Compares to Other Months

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

This table compares monthly weather conditions in Hekinan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	43 mm (1.7 inches)	82%	moderate
February Weather	7°C (44°F)	54 mm (2.1 inches)	79%	high
March Weather	11°C (52°F)	130 mm (5.1 inches)	74%	very high
April Weather	15°C (60°F)	132 mm (5.2 inches)	76%	very high
May Weather	20°C (68°F)	170 mm (6.7 inches)	83%	extreme
June Weather	24°C (75°F)	150 mm (5.9 inches)	87%	extreme
July Weather	27°C (81°F)	308 mm (12.1 inches)	93%	extreme
August Weather	29°C (85°F)	168 mm (6.6 inches)	91%	extreme
September Weather	25°C (78°F)	161 mm (6.3 inches)	87%	very high
October Weather	20°C (68°F)	234 mm (9.2 inches)	85%	high
November Weather	13°C (57°F)	55 mm (2.2 inches)	83%	moderate
December Weather	8°C (47°F)	51 mm (2.0 inches)	83%	moderate