December Weather in Hirara, Japan

Last updated: August 23, 2025

In December, the average temperature in Hirara, Japan hovers around 22°C (71°F), with a comfortable range between a minimum of 14°C (58°F) and a maximum of 26°C (79°F). Expect 229 mm (9.0 in) of precipitation spread over 18 days, and prepare for relatively high humidity levels at 77%.

December Temperature in Hirara

In December in Hirara, the average temperature is 22°C (71°F), with maximums reaching 26°C (79°F) and minimums dropping to 14°C (58°F). This mild and pleasant weather makes it an ideal time for travelers to explore and enjoy outdoor activities in Hirara.

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

The chart illustrates December temperature patterns in Hirara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hirara, December typically has an average temperature of 22°C (71°F), with highs reaching up to 26°C (79°F) and lows dropping to around 14°C (58°F).

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

December Precipitation in Hirara

In Hirara in December, the precipitation amount is 229 mm (9.0 in) over the course of 18 days.

December Precipitation Trends in Hirara

The chart displays monthly precipitation patterns in Hirara, 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 Hirara, December typically receives around 229 mm (9.0 inches) of precipitation spread over approximately 18 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 Hirara

In Hirara in December, humidity is 77%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket that can make walking around feel a bit stifling, requiring frequent breaks in shaded areas and plenty of hydration.

December Average Humidity in Hirara

This chart illustrates the average monthly humidity levels in Hirara, 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 Hirara is approximately 77%, 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 Hirara

In Hirara in December, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Hirara.

Maximum UV Index Levels in Hirara for December

The chart shows the monthly maximum UV Index (UVI) for Hirara 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 Hirara typically reaches 7, which falls under the high exposure category.

Data source: Hirara 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 Hirara Compares to Other Months

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

This table compares monthly weather conditions in Hirara, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	90 mm (3.6 inches)	73%	high
February Weather	20°C (68°F)	74 mm (2.9 inches)	73%	very high
March Weather	21°C (71°F)	135 mm (5.3 inches)	77%	extreme
April Weather	23°C (73°F)	126 mm (5.0 inches)	83%	extreme
May Weather	25°C (78°F)	157 mm (6.2 inches)	85%	extreme
June Weather	28°C (82°F)	232 mm (9.2 inches)	86%	extreme
July Weather	29°C (84°F)	221 mm (8.7 inches)	84%	extreme
August Weather	28°C (83°F)	279 mm (11.0 inches)	82%	extreme
September Weather	28°C (83°F)	260 mm (10.3 inches)	83%	extreme
October Weather	26°C (79°F)	140 mm (5.5 inches)	81%	very high
November Weather	24°C (76°F)	123 mm (4.9 inches)	81%	very high
December Weather	22°C (71°F)	229 mm (9.0 inches)	77%	high