December Weather in Hagi, Japan

Last updated: August 23, 2025

In December, the average temperature in Hagi, Japan hovers around 8°C (47°F). Be prepared for a range of weather, as temperatures can dip to a chilly 0°C (32°F) or rise up to a warm 21°C (70°F). Expect approximately 88 mm (3.5 in) of precipitation spread over 13 days, and with an average humidity of 75%, it's a month that might be both refreshing and damp.

December Temperature in Hagi

In December in Hagi, the average temperature is 8°C (47°F). Maximum temperatures can reach 21°C (70°F), while minimums can drop to as low as 0°C (32°F). Be sure to pack layers for your trip, as the weather can vary significantly throughout the day!

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

The chart illustrates December temperature patterns in Hagi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hagi, December typically has an average temperature of 8°C (47°F), with highs reaching up to 21°C (70°F) and lows dropping to around 0°C (32°F).

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

December Precipitation in Hagi

In Hagi in December, the precipitation amount is 88 mm (3.5 in) spread over 13 days.

December Precipitation Trends in Hagi

The chart displays monthly precipitation patterns in Hagi, 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 Hagi, December typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 13 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 Hagi

In Hagi in December humidity is 75%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities quite uncomfortable and requiring you to bundle up to stay warm while navigating the misty streets.

December Average Humidity in Hagi

This chart illustrates the average monthly humidity levels in Hagi, 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 Hagi is approximately 75%, 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 Hagi

In Hagi 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 Hagi, you can check the information here.

Maximum UV Index Levels in Hagi for December

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

Data source: Hagi 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 Hagi Compares to Other Months

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

This table compares monthly weather conditions in Hagi, 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)	78 mm (3.1 inches)	76%	moderate
February Weather	7°C (44°F)	89 mm (3.5 inches)	72%	moderate
March Weather	11°C (51°F)	144 mm (5.7 inches)	69%	very high
April Weather	14°C (58°F)	115 mm (4.5 inches)	75%	extreme
May Weather	19°C (66°F)	117 mm (4.6 inches)	84%	extreme
June Weather	22°C (72°F)	187 mm (7.4 inches)	88%	extreme
July Weather	26°C (79°F)	313 mm (12.3 inches)	95%	extreme
August Weather	28°C (82°F)	254 mm (10.0 inches)	93%	extreme
September Weather	24°C (75°F)	235 mm (9.3 inches)	84%	very high
October Weather	19°C (66°F)	129 mm (5.1 inches)	79%	high
November Weather	13°C (56°F)	51 mm (2.0 inches)	76%	high
December Weather	8°C (47°F)	88 mm (3.5 inches)	75%	moderate