January Weather in Heda, Japan

Last updated: August 23, 2025

In January, the average temperature in Heda, Japan hovers around 8°C (46°F), with minimums dipping to 0°C (32°F) and maximums reaching 17°C (62°F). Expect an average precipitation of 71 mm (2.8 in) spread across 6 days, and a high humidity level of 76% that contributes to the season's unique atmosphere.

January Temperature in Heda

In January in Heda, the average temperature is 8°C (46°F). The maximum can reach 17°C (62°F), and the minimum can be as low as 0°C (32°F). This mild and variable climate makes Heda an ideal destination for travelers who enjoy exploring outdoor activities while dressing in layers to accommodate the changing temperatures.

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

The chart illustrates January temperature patterns in Heda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heda, January typically has an average temperature of 8°C (46°F), with highs reaching up to 17°C (62°F) and lows dropping to around 0°C (32°F).

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

January Precipitation in Heda

In Heda in January, the precipitation amount is 71 mm (2.8 in) over a span of 6 days.

January Precipitation Trends in Heda

The chart displays monthly precipitation patterns in Heda, 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 Heda, January typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 6 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 Heda

In Heda in January, humidity is 76%. With an average temperature of 8°C (46°F), this humidity feels like a chilly dampness that seeps into your bones, making travel less enjoyable as the cold air mixes with the moisture, creating an uneasy, heavy atmosphere that can hinder your outdoor plans.

January Average Humidity in Heda

This chart illustrates the average monthly humidity levels in Heda, 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 Heda is approximately 76%, 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 Heda

In Heda 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 Heda for better planning.

Maximum UV Index Levels in Heda for January

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

Data source: Heda 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 Heda Compares to Other Months

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

This table compares monthly weather conditions in Heda, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	71 mm (2.8 inches)	76%	moderate
February Weather	8°C (46°F)	99 mm (3.9 inches)	74%	high
March Weather	11°C (52°F)	219 mm (8.6 inches)	70%	very high
April Weather	14°C (57°F)	226 mm (8.9 inches)	74%	very high
May Weather	18°C (64°F)	236 mm (9.3 inches)	81%	extreme
June Weather	21°C (70°F)	286 mm (11.3 inches)	88%	extreme
July Weather	24°C (76°F)	437 mm (17.2 inches)	93%	extreme
August Weather	26°C (80°F)	223 mm (8.8 inches)	90%	extreme
September Weather	24°C (75°F)	242 mm (9.5 inches)	86%	very high
October Weather	19°C (67°F)	296 mm (11.6 inches)	83%	high
November Weather	15°C (59°F)	102 mm (4.0 inches)	80%	moderate
December Weather	10°C (51°F)	84 mm (3.3 inches)	78%	moderate