December Weather in Heda, Japan

Last updated: August 23, 2025

In December, the average temperature in Heda, Japan is a mild 10°C (51°F), with a minimum dipping to 1°C (35°F) and a maximum reaching 19°C (67°F). During this month, expect around 84 mm (3.3 in) of precipitation over approximately 8 days, accompanied by an average humidity of 78%. Embrace the fluctuating climate and prepare for both sunny and rainy spells!

December Temperature in Heda

In December in Heda, the average temperature is 10°C (51°F). Maximums can reach 19°C (67°F), and minimums can be as low as 1°C (35°F). This mild climate makes Heda a comfortable destination for travelers seeking a pleasant experience during this time of year.

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

The chart illustrates December 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, December typically has an average temperature of 10°C (51°F), with highs reaching up to 19°C (67°F) and lows dropping to around 1°C (35°F).

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

December Precipitation in Heda

In Heda in December, the precipitation amount is 84 mm (3.3 in) spread over 8 days.

December Precipitation Trends in Heda

The chart displays monthly precipitation patterns in Heda, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Heda, December typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Heda

In Heda in December, humidity is 78%. With an average temperature of 10°C (51°F), this humidity feels like a cool, damp mist enveloping you, making travel feel somewhat brisk and invigorating, yet slightly uncomfortable for prolonged outdoor activities.

December Average Humidity in Heda

This chart illustrates the average monthly humidity levels in Heda, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Heda is approximately 78%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Heda

In Heda in December, 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 December

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

Data source: Heda December 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 December 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 December’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 December’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