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December Weather in Youkaichi, Japan

Last updated: August 23, 2025

In December, the average temperature in Youkaichi, Japan hovers around 6°C (44°F). Expect a chilly minimum of -5°C (24°F), but you could also experience a pleasant maximum of 21°C (71°F). Be prepared for some rain, as 64 mm (2.5 in) of precipitation falls over 8 days, contributing to a high average humidity of 83%.

December Temperature in Youkaichi

In December in Youkaichi, the average temperature is 6°C (44°F). The maximum can reach 21°C (71°F) and the minimum can be as low as -5°C (24°F). Be prepared for a mix of mild and chilly weather, making it a great time for layered clothing and outdoor exploration.

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

The chart illustrates December temperature patterns in Youkaichi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Youkaichi, December typically has an average temperature of 6°C (44°F), with highs reaching up to 21°C (71°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec394048566572798275645343
Data source: Temperature data for Youkaichi 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 Youkaichi

In Youkaichi in December, the precipitation amount is 64 mm (2.5 in) over the course of 8 days.

December Precipitation Trends in Youkaichi

The chart displays monthly precipitation patterns in Youkaichi, 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 Youkaichi, December typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec53581361461631743012081682714764
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Youkaichi

In Youkaichi in December, humidity is 83%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and potentially leading to a sense of heaviness in the air.

December Average Humidity in Youkaichi

This chart illustrates the average monthly humidity levels in Youkaichi, 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 Youkaichi is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Youkaichi

In Youkaichi in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Youkaichi, you can check the information here.

Maximum UV Index Levels in Youkaichi for December

The chart shows the monthly maximum UV Index (UVI) for Youkaichi 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 Youkaichi typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Youkaichi 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 Youkaichi Compares to Other Months

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

This table compares monthly weather conditions in Youkaichi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)53 mm (2.1 inches)82%moderate
February Weather5°C (40°F)58 mm (2.3 inches)79%high
March Weather9°C (48°F)136 mm (5.3 inches)74%very high
April Weather13°C (56°F)146 mm (5.8 inches)76%very high
May Weather19°C (66°F)163 mm (6.4 inches)83%extreme
June Weather22°C (72°F)174 mm (6.8 inches)87%extreme
July Weather26°C (79°F)301 mm (11.8 inches)93%extreme
August Weather28°C (82°F)207 mm (8.2 inches)91%extreme
September Weather24°C (75°F)168 mm (6.6 inches)87%very high
October Weather18°C (65°F)271 mm (10.7 inches)85%high
November Weather12°C (53°F)47 mm (1.8 inches)83%moderate
December Weather6°C (44°F)64 mm (2.5 inches)83%moderate

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