December Weather in Yamatokoriyama, Japan

Last updated: August 23, 2025

In December, the average temperature in Yamatokoriyama, Japan hovers around 6°C (44°F). Expect temperatures to range from a chilly -3°C (26°F) to a pleasant 22°C (72°F). Precipitation is moderate, with about 70 mm (2.8 in) over 8 days, while average humidity remains high at 83%. Embrace the unique climate that this season offers!

December Temperature in Yamatokoriyama

In December in Yamatokoriyama, the average temperature is 6°C (44°F). Maximums can reach 22°C (72°F) and minimums can be as low as -3°C (26°F). This makes it a versatile time for travelers, allowing for both mild and chilly experiences depending on the day.

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

The chart illustrates December temperature patterns in Yamatokoriyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yamatokoriyama, December typically has an average temperature of 6°C (44°F), with highs reaching up to 22°C (72°F) and lows dropping to around -3°C (26°F).

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

December Precipitation in Yamatokoriyama

In Yamatokoriyama in December, the total precipitation amount is 70 mm (2.8 in), spread over the course of 8 days.

December Precipitation Trends in Yamatokoriyama

The chart displays monthly precipitation patterns in Yamatokoriyama, 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 Yamatokoriyama, December typically receives around 70 mm (2.8 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 Yamatokoriyama

In Yamatokoriyama in December, humidity is 83%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and potentially leading to a sense of heaviness in the air.

December Average Humidity in Yamatokoriyama

This chart illustrates the average monthly humidity levels in Yamatokoriyama, 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 Yamatokoriyama is approximately 83%, 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 Yamatokoriyama

In Yamatokoriyama 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 Yamatokoriyama for better planning.

Maximum UV Index Levels in Yamatokoriyama for December

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

Data source: Yamatokoriyama 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 Yamatokoriyama Compares to Other Months

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

This table compares monthly weather conditions in Yamatokoriyama, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	60 mm (2.4 inches)	82%	moderate
February Weather	5°C (41°F)	73 mm (2.9 inches)	79%	high
March Weather	9°C (49°F)	128 mm (5.1 inches)	74%	very high
April Weather	14°C (57°F)	131 mm (5.1 inches)	76%	extreme
May Weather	19°C (66°F)	157 mm (6.2 inches)	83%	extreme
June Weather	22°C (72°F)	192 mm (7.6 inches)	87%	extreme
July Weather	26°C (80°F)	290 mm (11.4 inches)	93%	extreme
August Weather	28°C (83°F)	174 mm (6.8 inches)	91%	extreme
September Weather	24°C (75°F)	181 mm (7.1 inches)	87%	very high
October Weather	18°C (64°F)	268 mm (10.6 inches)	85%	high
November Weather	12°C (53°F)	51 mm (2.0 inches)	83%	high
December Weather	6°C (44°F)	70 mm (2.8 inches)	83%	moderate