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December Weather in Mibu, Japan

Last updated: August 23, 2025

In December, the average temperature in Mibu, Japan hovers around 5°C (42°F). Expect a minimum of -3°C (26°F) and a maximum of 18°C (65°F), making it a month of mild fluctuations. With 54 mm (2.1 in) of precipitation over about 6 days, pack an umbrella if you're venturing out! Additionally, the air is quite humid, with an average humidity of 86%, adding to the coolness of the season.

December Temperature in Mibu

In December in Mibu, the average temperature is 5°C (42°F). Maximum temperatures can reach 18°C (65°F), while minimums can drop as low as -3°C (26°F). Travelers should be prepared for a mix of chilly days and occasional warmth, making layered clothing essential.

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

The chart illustrates December temperature patterns in Mibu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mibu, December typically has an average temperature of 5°C (42°F), with highs reaching up to 18°C (65°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec384047556470778072625241
Data source: Temperature data for Mibu 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 Mibu

In Mibu in December, the total precipitation amount is 54 mm (2.1 in) over the course of 6 days.

December Precipitation Trends in Mibu

The chart displays monthly precipitation patterns in Mibu, 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 Mibu, December typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec38431411441601942962182252676754
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mibu

In Mibu in December, humidity is 86%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that penetrates your layers, making outdoor activities quite uncomfortable and prompting you to seek warmth indoors more often.

December Average Humidity in Mibu

This chart illustrates the average monthly humidity levels in Mibu, 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 Mibu is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%79%81%88%92%92%89%87%85%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mibu

In Mibu 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 Mibu, you can check the information here.

Maximum UV Index Levels in Mibu for December

The chart shows the monthly maximum UV Index (UVI) for Mibu 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 Mibu typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109653
Data source: Mibu 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 Mibu Compares to Other Months

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

This table compares monthly weather conditions in Mibu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)38 mm (1.5 inches)88%moderate
February Weather4°C (40°F)43 mm (1.7 inches)86%moderate
March Weather8°C (47°F)141 mm (5.5 inches)81%high
April Weather13°C (55°F)144 mm (5.7 inches)78%very high
May Weather18°C (65°F)160 mm (6.3 inches)81%very high
June Weather21°C (70°F)194 mm (7.6 inches)88%extreme
July Weather25°C (77°F)296 mm (11.6 inches)92%extreme
August Weather26°C (80°F)218 mm (8.6 inches)92%very high
September Weather22°C (72°F)225 mm (8.8 inches)89%very high
October Weather17°C (63°F)267 mm (10.5 inches)87%high
November Weather11°C (52°F)67 mm (2.6 inches)85%moderate
December Weather5°C (42°F)54 mm (2.1 inches)86%moderate

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