December Weather in Hadano, Japan

Last updated: August 23, 2025

In December, the average temperature in Hadano, Japan hovers around 9°C (49°F), with a minimum dipping to 1°C (34°F) and a maximum reaching 20°C (68°F). Rain is not uncommon, bringing an average precipitation of 91 mm (3.6 in) over 11 days. The air tends to feel quite humid, with an average humidity level of 78%.

December Temperature in Hadano

In December in Hadano, the average temperature is 9°C (49°F). Maximums can reach 20°C (68°F) and minimums can be as low as 1°C (34°F). This makes it a great time for travelers to enjoy the cool weather while exploring the beautiful sights of Hadano.

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

The chart illustrates December temperature patterns in Hadano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hadano, December typically has an average temperature of 9°C (49°F), with highs reaching up to 20°C (68°F) and lows dropping to around 1°C (34°F).

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

December Precipitation in Hadano

In Hadano in December, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

December Precipitation Trends in Hadano

The chart displays monthly precipitation patterns in Hadano, 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 Hadano, December typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 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 Hadano

In Hadano in December, humidity is 78%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while traveling, as the cool air combines with the moisture to create a brisk and invigorating atmosphere.

December Average Humidity in Hadano

This chart illustrates the average monthly humidity levels in Hadano, 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 Hadano is approximately 78%, 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 Hadano

In Hadano 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 Hadano for better planning.

Maximum UV Index Levels in Hadano for December

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

Data source: Hadano 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 Hadano Compares to Other Months

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

This table compares monthly weather conditions in Hadano, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	69 mm (2.7 inches)	76%	moderate
February Weather	7°C (45°F)	75 mm (3.0 inches)	74%	moderate
March Weather	10°C (51°F)	195 mm (7.7 inches)	70%	very high
April Weather	13°C (57°F)	162 mm (6.4 inches)	74%	very high
May Weather	18°C (64°F)	166 mm (6.5 inches)	81%	extreme
June Weather	21°C (70°F)	224 mm (8.8 inches)	88%	extreme
July Weather	24°C (76°F)	263 mm (10.3 inches)	93%	extreme
August Weather	26°C (80°F)	159 mm (6.2 inches)	90%	extreme
September Weather	23°C (74°F)	235 mm (9.3 inches)	86%	very high
October Weather	19°C (66°F)	346 mm (13.6 inches)	83%	high
November Weather	14°C (58°F)	115 mm (4.5 inches)	80%	moderate
December Weather	9°C (49°F)	91 mm (3.6 inches)	78%	moderate