December Weather in Date, Japan

Last updated: August 23, 2025

In December, the average temperature in Date, Japan hovers around -1°C (30°F). However, be prepared for a range where minimums can dip to -12°C (10°F) while maximums reach up to 12°C (55°F). Expect 66 mm (2.6 in) of precipitation spread over 20 days, resulting in an average humidity of 80%—so don't forget your umbrella and warm layers!

December Temperature in Date

In December in Date, the average temperature is -1°C (30°F), with maximums reaching 12°C (55°F) and minimums dropping as low as -12°C (10°F). Travelers should be prepared for chilly conditions and varying temperatures during this time.

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

The chart illustrates December temperature patterns in Date, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Date, December typically has an average temperature of -1°C (30°F), with highs reaching up to 12°C (55°F) and lows dropping to around -12°C (10°F).

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

December Precipitation in Date

In Date in December, the total precipitation amount is 66 mm (2.6 in) spread over 20 days.

December Precipitation Trends in Date

The chart displays monthly precipitation patterns in Date, 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 Date, December typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 20 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 Date

In Date in December, humidity is 80%. With an average temperature of -1°C (30°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and travel quite challenging.

December Average Humidity in Date

This chart illustrates the average monthly humidity levels in Date, 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 Date is approximately 80%, 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 Date

In Date in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Date, you can visit Hourly UV Index in Date.

Maximum UV Index Levels in Date for December

The chart shows the monthly maximum UV Index (UVI) for Date 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 Date typically reaches 2, which falls under the low exposure category.

Data source: Date 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 Date Compares to Other Months

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

This table compares monthly weather conditions in Date, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	52 mm (2.0 inches)	84%	low
February Weather	-3°C (27°F)	54 mm (2.1 inches)	83%	moderate
March Weather	2°C (35°F)	78 mm (3.1 inches)	81%	moderate
April Weather	6°C (44°F)	87 mm (3.4 inches)	81%	high
May Weather	12°C (54°F)	82 mm (3.2 inches)	86%	very high
June Weather	16°C (61°F)	104 mm (4.1 inches)	87%	very high
July Weather	20°C (69°F)	97 mm (3.8 inches)	93%	very high
August Weather	21°C (71°F)	143 mm (5.6 inches)	95%	very high
September Weather	18°C (66°F)	103 mm (4.1 inches)	88%	very high
October Weather	13°C (55°F)	103 mm (4.1 inches)	83%	high
November Weather	6°C (43°F)	92 mm (3.6 inches)	79%	moderate
December Weather	-1°C (30°F)	66 mm (2.6 inches)	80%	low