nomadseason

December Weather in Shin'ichi, Japan

Last updated: August 23, 2025

In December, the average temperature in Shin'ichi, Japan hovers around 8°C (46°F), with daily highs reaching up to 20°C (69°F) and lows dipping to a chilly 0°C (32°F). Expect around 45 mm (1.8 in) of precipitation over 6 days, contributing to an average humidity level of 82%.

December Temperature in Shin'ichi

In December in Shin'ichi, the average temperature is 8°C (46°F), with maximums reaching 20°C (69°F) and minimums dipping as low as 0°C (32°F). This mild yet varied weather makes Shin'ichi an appealing destination for travelers seeking a refreshing escape during this time of year.

December Weather in Shin'ichi: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Shin'ichi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shin'ichi, December typically has an average temperature of 8°C (46°F), with highs reaching up to 20°C (69°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec434351596873818477675546
Data source: Temperature data for Shin'ichi generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Shin'ichi

In Shin'ichi in December, the precipitation amount is 45 mm (1.8 in) over the course of 6 days.

December Precipitation Trends in Shin'ichi

The chart displays monthly precipitation patterns in Shin'ichi, 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 Shin'ichi, December typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec4054931171071493141661741643146
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Shin'ichi

In Shin'ichi in December humidity is 82%. With an average temperature of 8°C (46°F), this humidity feels like a thick, damp blanket wrapping around you, making travel uncomfortable and creating a sense of heaviness in the air that can sap your energy quickly.

December Average Humidity in Shin'ichi

This chart illustrates the average monthly humidity levels in Shin'ichi, 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 Shin'ichi is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%73%74%84%86%92%92%87%85%84%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Shin'ichi

In Shin'ichi 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 Shin'ichi for better planning.

Maximum UV Index Levels in Shin'ichi for December

The chart shows the monthly maximum UV Index (UVI) for Shin'ichi 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 Shin'ichi typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101111121210764
Data source: Shin'ichi 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 Shin'ichi Compares to Other Months

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

This table compares monthly weather conditions in Shin'ichi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)40 mm (1.6 inches)82%moderate
February Weather6°C (44°F)54 mm (2.1 inches)79%moderate
March Weather10°C (51°F)93 mm (3.7 inches)73%very high
April Weather15°C (59°F)117 mm (4.6 inches)74%very high
May Weather20°C (68°F)107 mm (4.2 inches)84%extreme
June Weather23°C (74°F)149 mm (5.9 inches)86%extreme
July Weather27°C (81°F)314 mm (12.4 inches)92%extreme
August Weather29°C (85°F)166 mm (6.5 inches)92%extreme
September Weather25°C (77°F)174 mm (6.9 inches)87%very high
October Weather19°C (67°F)164 mm (6.4 inches)85%high
November Weather13°C (56°F)31 mm (1.2 inches)84%high
December Weather8°C (46°F)45 mm (1.8 inches)82%moderate

Compare Shin'ichi's Climate with Cities Worldwide