December Weather in Nagahama, Japan

Last updated: August 23, 2025

In December, the average temperature in Nagahama, Japan hovers around 6°C (42°F). Expect a chilly minimum of -4°C (26°F) and a mild maximum of 18°C (64°F). With 128 mm (5.0 in) of precipitation spread over 19 days, it's wise to keep an umbrella handy. Coupled with an average humidity of 83%, layers will be your best friend during this damp and brisk month!

December Temperature in Nagahama

In December in Nagahama, the average temperature is 6°C (42°F), with maximums reaching 18°C (64°F) and minimums dropping as low as -4°C (26°F). Be sure to pack layers for your trip, as the temperature can vary significantly throughout the day.

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

The chart illustrates December temperature patterns in Nagahama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagahama, December typically has an average temperature of 6°C (42°F), with highs reaching up to 18°C (64°F) and lows dropping to around -4°C (26°F).

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

December Precipitation in Nagahama

In Nagahama in December, the total precipitation amount is 128 mm (5.0 in) spread across 19 days.

December Precipitation Trends in Nagahama

The chart displays monthly precipitation patterns in Nagahama, 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 Nagahama, December typically receives around 128 mm (5.0 inches) of precipitation spread over approximately 19 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 Nagahama

In Nagahama in December, humidity is 83%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making it essential to bundle up while exploring the area.

December Average Humidity in Nagahama

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

In Nagahama in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Nagahama, you can check the information here.

Maximum UV Index Levels in Nagahama for December

The chart shows the monthly maximum UV Index (UVI) for Nagahama 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 Nagahama typically reaches 3, which falls under the moderate exposure category.

Data source: Nagahama 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 Nagahama Compares to Other Months

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

This table compares monthly weather conditions in Nagahama, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (37°F)	98 mm (3.9 inches)	82%	moderate
February Weather	3°C (38°F)	100 mm (3.9 inches)	79%	high
March Weather	8°C (46°F)	152 mm (6.0 inches)	74%	very high
April Weather	12°C (54°F)	176 mm (6.9 inches)	76%	very high
May Weather	17°C (63°F)	186 mm (7.3 inches)	83%	extreme
June Weather	21°C (69°F)	213 mm (8.4 inches)	87%	extreme
July Weather	25°C (77°F)	393 mm (15.5 inches)	93%	extreme
August Weather	27°C (80°F)	244 mm (9.6 inches)	91%	extreme
September Weather	22°C (73°F)	230 mm (9.1 inches)	87%	very high
October Weather	17°C (63°F)	236 mm (9.3 inches)	85%	high
November Weather	11°C (52°F)	78 mm (3.1 inches)	83%	moderate
December Weather	6°C (42°F)	128 mm (5.0 inches)	83%	moderate