December Weather in Izumi, Japan

Last updated: August 23, 2025

In December, the average temperature in Izumi, Japan hovers around 8°C (47°F), with a minimum dipping to -1°C (31°F) and a maximum reaching up to 22°C (73°F). Expect about 62 mm (2.5 in) of precipitation spread over 7 days, and be prepared for a relatively high humidity level of 83%.

December Temperature in Izumi

In December in Izumi, the average temperature is 8°C (47°F). The maximum can reach 22°C (73°F), while the minimum can plummet to as low as -1°C (31°F). This diverse range of temperatures makes Izumi a great destination for travelers seeking both mild days and crisp nights.

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

The chart illustrates December temperature patterns in Izumi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Izumi, December typically has an average temperature of 8°C (47°F), with highs reaching up to 22°C (73°F) and lows dropping to around -1°C (31°F).

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

December Precipitation in Izumi

In Izumi in December, the precipitation amount is 62 mm (2.5 in) over a period of 7 days.

December Precipitation Trends in Izumi

The chart displays monthly precipitation patterns in Izumi, 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 Izumi, December typically receives around 62 mm (2.5 inches) of precipitation spread over approximately 7 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 Izumi

In Izumi in December humidity is 83%. With an average temperature of 8°C (47°F), this humidity feels like a chilly dampness that clings to your skin, making travel uncomfortable and leaving you yearning for warmth and dryness as you explore.

December Average Humidity in Izumi

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

In Izumi 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 Izumi for better planning.

Maximum UV Index Levels in Izumi for December

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

Data source: Izumi 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 Izumi Compares to Other Months

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

This table compares monthly weather conditions in Izumi, 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 (42°F)	53 mm (2.1 inches)	82%	moderate
February Weather	6°C (43°F)	65 mm (2.6 inches)	79%	high
March Weather	10°C (51°F)	110 mm (4.3 inches)	74%	very high
April Weather	15°C (59°F)	122 mm (4.8 inches)	76%	extreme
May Weather	20°C (68°F)	146 mm (5.7 inches)	83%	extreme
June Weather	23°C (74°F)	166 mm (6.5 inches)	87%	extreme
July Weather	27°C (82°F)	270 mm (10.6 inches)	93%	extreme
August Weather	29°C (85°F)	160 mm (6.3 inches)	91%	extreme
September Weather	25°C (77°F)	164 mm (6.5 inches)	87%	very high
October Weather	19°C (67°F)	238 mm (9.4 inches)	85%	high
November Weather	13°C (56°F)	48 mm (1.9 inches)	83%	high
December Weather	8°C (47°F)	62 mm (2.5 inches)	83%	moderate