December Weather in Ijuin, Japan

Last updated: August 23, 2025

In December, the average temperature in Ijuin, Japan is a pleasant 11°C (51°F). Expect minimums dipping to 1°C (34°F) and highs reaching up to 25°C (77°F). Be prepared for some rain, with an average precipitation of 82 mm (3.2 in) spread over 8 days. The humidity tends to linger around 74%, adding a touch of moisture to the air.

December Temperature in Ijuin

In December, in Ijuin, the average temperature is 11°C (51°F). Maximum temperatures can reach 25°C (77°F), while minimums can plummet to as low as 1°C (34°F). This means it's a great time to explore Ijuin while enjoying mild days and cool nights, so be sure to pack layers!

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

The chart illustrates December temperature patterns in Ijuin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ijuin, December typically has an average temperature of 11°C (51°F), with highs reaching up to 25°C (77°F) and lows dropping to around 1°C (34°F).

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

December Precipitation in Ijuin

In Ijuin in December, the total precipitation amount reached 82 mm (3.2 in) over the course of 8 days.

December Precipitation Trends in Ijuin

The chart displays monthly precipitation patterns in Ijuin, 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 Ijuin, December typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 8 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 Ijuin

In Ijuin in December, humidity is 74%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and encouraging visitors to seek refuge in cozy cafés or indoor attractions.

December Average Humidity in Ijuin

This chart illustrates the average monthly humidity levels in Ijuin, 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 Ijuin is approximately 74%, 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 Ijuin

In Ijuin 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 Ijuin for better planning.

Maximum UV Index Levels in Ijuin for December

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

Data source: Ijuin 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 Ijuin Compares to Other Months

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

This table compares monthly weather conditions in Ijuin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	53 mm (2.1 inches)	72%	moderate
February Weather	10°C (50°F)	103 mm (4.0 inches)	68%	high
March Weather	13°C (56°F)	170 mm (6.7 inches)	72%	very high
April Weather	17°C (63°F)	147 mm (5.8 inches)	79%	extreme
May Weather	21°C (70°F)	260 mm (10.2 inches)	83%	extreme
June Weather	24°C (75°F)	423 mm (16.7 inches)	86%	extreme
July Weather	27°C (81°F)	403 mm (15.9 inches)	90%	extreme
August Weather	28°C (84°F)	192 mm (7.6 inches)	85%	extreme
September Weather	26°C (79°F)	254 mm (10.0 inches)	80%	extreme
October Weather	22°C (71°F)	137 mm (5.4 inches)	78%	very high
November Weather	16°C (61°F)	97 mm (3.8 inches)	76%	high
December Weather	11°C (51°F)	82 mm (3.2 inches)	74%	moderate