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December Weather in Yotsukaido, Japan

Last updated: August 23, 2025

In December, the average temperature in Yotsukaido, Japan is a cool 8°C (46°F), with a maximum of 21°C (71°F) and a minimum dipping down to -3°C (27°F). Expect about 71 mm (2.8 in) of precipitation spread across 8 days, while the air remains relatively humid at an average of 72%.

December Temperature in Yotsukaido

In December in Yotsukaido, the average temperature is 8°C (46°F), with maximums reaching up to 21°C (71°F) and minimums dropping as low as -3°C (27°F).

Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Yotsukaido, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yotsukaido, December typically has an average temperature of 8°C (46°F), with highs reaching up to 21°C (71°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec414351586772798275665746
Data source: Temperature data for Yotsukaido 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 Yotsukaido

In Yotsukaido in December, the precipitation amount is 71 mm (2.8 in) over the course of 8 days.

December Precipitation Trends in Yotsukaido

The chart displays monthly precipitation patterns in Yotsukaido, 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 Yotsukaido, December typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec524613611612816122310218625410171
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Yotsukaido

In Yotsukaido in December humidity is 72%. With an average temperature of 8°C (46°F), this humidity feels like a chilly blanket wrapping around you, making outdoor activities somewhat uncomfortable and requiring travelers to dress in layers to stay warm and dry.

December Average Humidity in Yotsukaido

This chart illustrates the average monthly humidity levels in Yotsukaido, 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 Yotsukaido is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%69%68%73%81%88%94%87%83%78%74%72%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Yotsukaido

In Yotsukaido 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 Yotsukaido for better planning.

Maximum UV Index Levels in Yotsukaido for December

The chart shows the monthly maximum UV Index (UVI) for Yotsukaido 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 Yotsukaido typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589111111119754
Data source: Yotsukaido 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 Yotsukaido Compares to Other Months

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

This table compares monthly weather conditions in Yotsukaido, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)52 mm (2.1 inches)70%moderate
February Weather6°C (44°F)46 mm (1.8 inches)69%moderate
March Weather10°C (51°F)136 mm (5.4 inches)68%very high
April Weather14°C (58°F)116 mm (4.6 inches)73%very high
May Weather19°C (67°F)128 mm (5.0 inches)81%extreme
June Weather22°C (72°F)161 mm (6.3 inches)88%extreme
July Weather26°C (79°F)223 mm (8.8 inches)94%extreme
August Weather28°C (82°F)102 mm (4.0 inches)87%extreme
September Weather24°C (75°F)186 mm (7.3 inches)83%very high
October Weather19°C (66°F)254 mm (10.0 inches)78%high
November Weather14°C (57°F)101 mm (4.0 inches)74%moderate
December Weather8°C (46°F)71 mm (2.8 inches)72%moderate

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