December Weather in Itako, Japan

Last updated: August 23, 2025

In December, the average temperature in Itako, Japan is a brisk 9°C (48°F). Expect temperatures to range from a chilly 0°C (32°F) at the lowest to a mild 21°C (70°F) at the highest. During this month, you can anticipate 76 mm (3.0 in) of precipitation spread over about 9 days, contributing to an average humidity level of 72%.

December Temperature in Itako

In December in Itako, the average temperature is 9°C (48°F). Maximums can reach 21°C (70°F), and minimums can drop as low as 0°C (32°F). This makes Itako an ideal destination for travelers looking to experience mild weather with pleasant daytime temperatures, perfect for outdoor activities.

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

The chart illustrates December temperature patterns in Itako, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Itako, December typically has an average temperature of 9°C (48°F), with highs reaching up to 21°C (70°F) and lows dropping to around 0°C (32°F).

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

December Precipitation in Itako

In Itako in December, the precipitation amount is 76 mm (3.0 in) spread over a period of 9 days.

December Precipitation Trends in Itako

The chart displays monthly precipitation patterns in Itako, 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 Itako, December typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 9 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 Itako

In Itako in December, humidity is 72%. With an average temperature of 9°C (48°F), this humidity feels like a chilly dampness that clings to your skin, making it essential to dress in layers for traveling, as the cold and moisture can be quite uncomfortable for prolonged outdoor activities.

December Average Humidity in Itako

This chart illustrates the average monthly humidity levels in Itako, 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 Itako is approximately 72%, 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 Itako

In Itako 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 Itako, you can check the information here.

Maximum UV Index Levels in Itako for December

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

Data source: Itako 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 Itako Compares to Other Months

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

This table compares monthly weather conditions in Itako, 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)	55 mm (2.2 inches)	70%	moderate
February Weather	7°C (45°F)	52 mm (2.0 inches)	69%	moderate
March Weather	11°C (51°F)	145 mm (5.7 inches)	68%	high
April Weather	14°C (57°F)	123 mm (4.8 inches)	73%	very high
May Weather	19°C (66°F)	138 mm (5.4 inches)	81%	very high
June Weather	21°C (71°F)	158 mm (6.2 inches)	88%	extreme
July Weather	25°C (77°F)	207 mm (8.2 inches)	94%	extreme
August Weather	27°C (81°F)	100 mm (3.9 inches)	87%	very high
September Weather	24°C (75°F)	176 mm (6.9 inches)	83%	very high
October Weather	19°C (67°F)	258 mm (10.1 inches)	78%	high
November Weather	14°C (58°F)	110 mm (4.3 inches)	74%	moderate
December Weather	9°C (48°F)	76 mm (3.0 inches)	72%	moderate