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December Weather in Shinshimokawa, Japan

Last updated: August 23, 2025

In December, the average temperature in Shinshimokawa, Japan hovers around -5°C (23°F). Expect chilly days with lows dropping to -19°C (-3°F) and highs reaching up to 12°C (53°F). With an average precipitation of 86 mm (3.4 in) over 26 days, and a humidity level of 82%, it's essential to prepare for a damp and frosty atmosphere.

December Temperature in Shinshimokawa

In December in Shinshimokawa, the average temperature is -5°C (23°F), with a maximum that can reach 12°C (53°F) and a minimum that can drop as low as -19°C (-3°F). Travelers should be prepared for a wide range of temperatures, bringing both warm clothing and lighter layers for milder days.

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

The chart illustrates December temperature patterns in Shinshimokawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shinshimokawa, December typically has an average temperature of -5°C (23°F), with highs reaching up to 12°C (53°F) and lows dropping to around -19°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec171929405257676660483623
Data source: Temperature data for Shinshimokawa 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 Shinshimokawa

In Shinshimokawa in December, the precipitation amount is 86 mm (3.4 in) spread over 26 days.

December Precipitation Trends in Shinshimokawa

The chart displays monthly precipitation patterns in Shinshimokawa, 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 Shinshimokawa, December typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec6476846994971001588013812086
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Shinshimokawa

In Shinshimokawa in December humidity is 82%. With an average temperature of -5°C (23°F), this humidity feels like a damp chill that seeps into your bones, making it uncomfortable for traveling.

December Average Humidity in Shinshimokawa

This chart illustrates the average monthly humidity levels in Shinshimokawa, 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 Shinshimokawa is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%85%85%88%88%93%95%88%81%78%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Shinshimokawa

In Shinshimokawa 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 Shinshimokawa, you can visit Hourly UV Index in Shinshimokawa.

Maximum UV Index Levels in Shinshimokawa for December

The chart shows the monthly maximum UV Index (UVI) for Shinshimokawa 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 Shinshimokawa typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236789997532
Data source: Shinshimokawa 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 Shinshimokawa Compares to Other Months

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

This table compares monthly weather conditions in Shinshimokawa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)64 mm (2.5 inches)87%low
February Weather-7°C (19°F)76 mm (3.0 inches)86%moderate
March Weather-2°C (29°F)84 mm (3.3 inches)85%high
April Weather4°C (40°F)69 mm (2.7 inches)85%high
May Weather11°C (53°F)94 mm (3.7 inches)88%very high
June Weather14°C (58°F)97 mm (3.8 inches)88%very high
July Weather19°C (67°F)100 mm (3.9 inches)93%very high
August Weather19°C (66°F)158 mm (6.2 inches)95%very high
September Weather15°C (60°F)80 mm (3.1 inches)88%high
October Weather9°C (48°F)138 mm (5.4 inches)80%moderate
November Weather2°C (36°F)119 mm (4.7 inches)78%moderate
December Weather-5°C (23°F)86 mm (3.4 inches)82%low

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