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December Weather in Shimanto, Japan

Last updated: August 23, 2025

In December, the average temperature in Shimanto, Japan is a comfortable 10°C (50°F), with a minimum dipping to 1°C (34°F) and a pleasant maximum of 22°C (72°F). Be prepared for some rain, as the region sees an average precipitation of 77 mm (3.0 in) over 6 days. Overall, expect a humid atmosphere with an average humidity level of 77%.

December Temperature in Shimanto

In December in Shimanto, the average temperature is 10°C (50°F). Maximum temperatures can reach 22°C (72°F), while minimums can drop to as low as 1°C (34°F). This diverse range makes it an ideal time for travelers to pack layers and enjoy a variety of outdoor activities.

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

The chart illustrates December temperature patterns in Shimanto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shimanto, December typically has an average temperature of 10°C (50°F), with highs reaching up to 22°C (72°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec464755616873798277695950
Data source: Temperature data for Shimanto 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 Shimanto

In Shimanto in December, the total precipitation amount is 77 mm (3.0 in) occurring over a span of 6 days.

December Precipitation Trends in Shimanto

The chart displays monthly precipitation patterns in Shimanto, 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 Shimanto, December typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec59981531652092653972352632407777
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Shimanto

In Shimanto in December, humidity is 77%. With an average temperature of 10°C (50°F), this humidity feels like a thick, heavy blanket enveloping you, making travel uncomfortable and sticky, as it clings to your skin and clothes, turning each step into a challenge.

December Average Humidity in Shimanto

This chart illustrates the average monthly humidity levels in Shimanto, 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 Shimanto is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%70%70%76%83%86%91%88%85%82%79%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Shimanto

In Shimanto 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 Shimanto for better planning.

Maximum UV Index Levels in Shimanto for December

The chart shows the monthly maximum UV Index (UVI) for Shimanto 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 Shimanto typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101212121211864
Data source: Shimanto 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 Shimanto Compares to Other Months

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

This table compares monthly weather conditions in Shimanto, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)59 mm (2.3 inches)74%moderate
February Weather8°C (47°F)98 mm (3.9 inches)70%high
March Weather13°C (55°F)153 mm (6.0 inches)70%very high
April Weather16°C (61°F)165 mm (6.5 inches)76%very high
May Weather20°C (68°F)209 mm (8.2 inches)82%extreme
June Weather23°C (73°F)265 mm (10.4 inches)86%extreme
July Weather26°C (80°F)397 mm (15.6 inches)91%extreme
August Weather28°C (82°F)235 mm (9.3 inches)88%extreme
September Weather25°C (77°F)263 mm (10.4 inches)85%extreme
October Weather21°C (69°F)240 mm (9.5 inches)82%very high
November Weather15°C (59°F)77 mm (3.0 inches)79%high
December Weather10°C (50°F)77 mm (3.0 inches)77%moderate

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