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December Weather in Usuki, Japan

Last updated: August 23, 2025

In Usuki, Japan, the average temperature in December hovers around 8°C (47°F), with the thermometer dipping as low as -1°C (31°F) and peaking at a pleasant 23°C (74°F). This month also sees an average precipitation of 52 mm (2.0 in) spread over 6 days, contributing to an average humidity level of 79%. Expect a blend of cool and refreshing weather, perfect for exploring!

December Temperature in Usuki

In December in Usuki, the average temperature is 8°C (47°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as -1°C (31°F). Be prepared for a mix of warm and chilly days when traveling during this time.

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

The chart illustrates December temperature patterns in Usuki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Usuki, December typically has an average temperature of 8°C (47°F), with highs reaching up to 23°C (74°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec444553606873818376675647
Data source: Temperature data for Usuki generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Usuki

In Usuki, in December, the precipitation amount is 52 mm (2.0 in) over the course of 6 days.

December Precipitation Trends in Usuki

The chart displays monthly precipitation patterns in Usuki, 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 Usuki, December typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec56751161101492073362282402335152
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Usuki

In Usuki in December, humidity is 79%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

December Average Humidity in Usuki

This chart illustrates the average monthly humidity levels in Usuki, 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 Usuki is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%71%71%78%84%86%92%91%84%83%81%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Usuki

In Usuki 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 Usuki for better planning.

Maximum UV Index Levels in Usuki for December

The chart shows the monthly maximum UV Index (UVI) for Usuki 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 Usuki typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111211121211764
Data source: Usuki 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 Usuki Compares to Other Months

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

This table compares monthly weather conditions in Usuki, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)56 mm (2.2 inches)75%moderate
February Weather7°C (46°F)75 mm (2.9 inches)71%high
March Weather11°C (53°F)116 mm (4.6 inches)71%very high
April Weather15°C (60°F)110 mm (4.3 inches)78%extreme
May Weather20°C (68°F)149 mm (5.9 inches)84%extreme
June Weather23°C (74°F)207 mm (8.2 inches)86%extreme
July Weather27°C (81°F)336 mm (13.2 inches)92%extreme
August Weather28°C (83°F)228 mm (9.0 inches)91%extreme
September Weather25°C (77°F)240 mm (9.5 inches)84%extreme
October Weather20°C (67°F)233 mm (9.2 inches)83%high
November Weather14°C (57°F)51 mm (2.0 inches)81%high
December Weather8°C (47°F)52 mm (2.0 inches)79%moderate

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