December Weather in Mori, Japan

Last updated: August 23, 2025

In December, the average temperature in Mori, Japan is a crisp 10°C (50°F), with lows dipping to 1°C (34°F) and highs reaching up to 21°C (70°F). Expect about 71 mm (2.8 in) of precipitation spread over 6 days, resulting in an average humidity of 78%. Prepare for a mix of cool breezes and occasional rain!

December Temperature in Mori

In December in Mori, the average temperature is 10°C (50°F). Maximums can reach 21°C (70°F), while minimums can drop as low as 1°C (34°F). This range of temperatures makes it a great time for travelers to enjoy outdoor activities while also being prepared for cooler evenings.

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

The chart illustrates December temperature patterns in Mori, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mori, December typically has an average temperature of 10°C (50°F), with highs reaching up to 21°C (70°F) and lows dropping to around 1°C (34°F).

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

December Precipitation in Mori

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

December Precipitation Trends in Mori

The chart displays monthly precipitation patterns in Mori, 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 Mori, December typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 6 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Mori

In Mori in December humidity is 78%. With an average temperature of 10°C (50°F), this humidity feels like a chilly dampness that can seep into your clothes, making outdoor activities less enjoyable and requiring extra layers to stay warm as you explore the area.

December Average Humidity in Mori

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

In Mori 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 Mori for better planning.

Maximum UV Index Levels in Mori for December

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

Data source: Mori 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 Mori Compares to Other Months

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

This table compares monthly weather conditions in Mori, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	58 mm (2.3 inches)	76%	moderate
February Weather	8°C (46°F)	82 mm (3.2 inches)	74%	moderate
March Weather	11°C (53°F)	175 mm (6.9 inches)	70%	very high
April Weather	15°C (60°F)	175 mm (6.9 inches)	74%	very high
May Weather	20°C (68°F)	205 mm (8.1 inches)	81%	extreme
June Weather	23°C (73°F)	277 mm (10.9 inches)	88%	extreme
July Weather	26°C (80°F)	427 mm (16.8 inches)	93%	extreme
August Weather	28°C (83°F)	200 mm (7.9 inches)	90%	extreme
September Weather	25°C (77°F)	232 mm (9.2 inches)	86%	very high
October Weather	20°C (69°F)	297 mm (11.7 inches)	83%	high
November Weather	15°C (60°F)	91 mm (3.6 inches)	80%	moderate
December Weather	10°C (50°F)	71 mm (2.8 inches)	78%	moderate