December Weather in Omigawa, Japan

Last updated: August 23, 2025

The average temperature in Omigawa, Japan during December is a cool 9°C (48°F). Temperatures can vary significantly, with a minimum of -1°C (30°F) and a maximum of 22°C (71°F). Expect about 81 mm (3.2 in) of precipitation spread over 9 days, contributing to an average humidity of 72%.

December Temperature in Omigawa

In December in Omigawa, the average temperature is 9°C (48°F). Maximum temperatures can reach 22°C (71°F), while the minimum can drop as low as -1°C (30°F). Be sure to pack layers to comfortably enjoy your travels in this versatile climate.

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

The chart illustrates December temperature patterns in Omigawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Omigawa, December typically has an average temperature of 9°C (48°F), with highs reaching up to 22°C (71°F) and lows dropping to around -1°C (30°F).

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

December Precipitation in Omigawa

In Omigawa in December, the precipitation amount is 81 mm (3.2 in) spread over a duration of 9 days.

December Precipitation Trends in Omigawa

The chart displays monthly precipitation patterns in Omigawa, 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 Omigawa, December typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 9 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 Omigawa

In Omigawa in December, humidity is 72%. With an average temperature of 9°C (48°F), this humidity feels like a chilly dampness that clings to your skin, making it essential to dress in layers for traveling, as the cold and moisture can be quite uncomfortable for prolonged outdoor activities.

December Average Humidity in Omigawa

This chart illustrates the average monthly humidity levels in Omigawa, 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 Omigawa is approximately 72%, 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 Omigawa

In Omigawa 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 Omigawa for better planning.

Maximum UV Index Levels in Omigawa for December

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

Data source: Omigawa 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 Omigawa Compares to Other Months

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

This table compares monthly weather conditions in Omigawa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	56 mm (2.2 inches)	70%	moderate
February Weather	7°C (45°F)	52 mm (2.0 inches)	69%	moderate
March Weather	11°C (52°F)	144 mm (5.7 inches)	68%	very high
April Weather	14°C (58°F)	112 mm (4.4 inches)	73%	very high
May Weather	19°C (67°F)	132 mm (5.2 inches)	81%	extreme
June Weather	22°C (72°F)	169 mm (6.7 inches)	88%	extreme
July Weather	26°C (78°F)	213 mm (8.4 inches)	94%	extreme
August Weather	27°C (82°F)	95 mm (3.8 inches)	87%	extreme
September Weather	24°C (75°F)	179 mm (7.0 inches)	83%	very high
October Weather	19°C (67°F)	255 mm (10.0 inches)	78%	high
November Weather	14°C (58°F)	109 mm (4.3 inches)	74%	moderate
December Weather	9°C (48°F)	81 mm (3.2 inches)	72%	moderate