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December Weather in Shunan, Japan

Last updated: August 23, 2025

In December, the average temperature in Shunan, Japan is 9°C (48°F), with a minimum of 1°C (33°F) and a maximum reaching 20°C (68°F). Expect about 65 mm (2.6 in) of precipitation spread over 9 days, contributing to an average humidity of 79%. Enjoy the crisp air and prepare for occasional rain!

December Temperature in Shunan

In December in Shunan, the average temperature is 9°C (48°F). The maximum can reach 20°C (68°F), while the minimum can drop to as low as 1°C (33°F). Travelers should pack layers to stay comfortable in varying temperatures during this month.

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

The chart illustrates December temperature patterns in Shunan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shunan, December typically has an average temperature of 9°C (48°F), with highs reaching up to 20°C (68°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec444451576571788175675748
Data source: Temperature data for Shunan 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 Shunan

In Shunan in December, the precipitation amount is 65 mm (2.6 in) over the course of 9 days.

December Precipitation Trends in Shunan

The chart displays monthly precipitation patterns in Shunan, 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 Shunan, December typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec57821301441662043582352211534565
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Shunan

In Shunan in December humidity is 79%. With an average temperature of 9°C (48°F), this humidity feels like a chilly mist wrapping around you, making outdoor activities brisk yet invigorating, but it can also leave you feeling damp and slightly chilled if you're not dressed appropriately for the conditions.

December Average Humidity in Shunan

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

In Shunan 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 Shunan for better planning.

Maximum UV Index Levels in Shunan for December

The chart shows the monthly maximum UV Index (UVI) for Shunan 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 Shunan typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458111111121210764
Data source: Shunan 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 Shunan Compares to Other Months

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

This table compares monthly weather conditions in Shunan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)57 mm (2.2 inches)75%moderate
February Weather7°C (45°F)82 mm (3.2 inches)71%moderate
March Weather10°C (51°F)130 mm (5.1 inches)71%very high
April Weather14°C (57°F)144 mm (5.7 inches)78%extreme
May Weather18°C (65°F)166 mm (6.5 inches)84%extreme
June Weather22°C (71°F)203 mm (8.0 inches)86%extreme
July Weather26°C (78°F)358 mm (14.1 inches)92%extreme
August Weather27°C (81°F)235 mm (9.3 inches)91%extreme
September Weather24°C (76°F)221 mm (8.7 inches)84%very high
October Weather20°C (67°F)153 mm (6.0 inches)83%high
November Weather14°C (58°F)45 mm (1.8 inches)81%high
December Weather9°C (48°F)65 mm (2.6 inches)79%moderate

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