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December Weather in Kobayashi, Japan

Last updated: August 23, 2025

In December, the average temperature in Kobayashi, Japan hovers around 6°C (44°F). Temperatures can vary significantly, with a minimum of -5°C (23°F) and a maximum reaching 22°C (72°F). Expect 78 mm (3.1 in) of precipitation spread over 7 days, paired with an average humidity of 74%. Perfect for those who enjoy a brisk, refreshing climate!

December Temperature in Kobayashi

In December in Kobayashi, the average temperature is 6°C (44°F). Maximums can reach 22°C (72°F), and minimums can be as low as -5°C (23°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack layers to stay comfortable during their visit.

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

The chart illustrates December temperature patterns in Kobayashi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kobayashi, December typically has an average temperature of 6°C (44°F), with highs reaching up to 22°C (72°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec414351586671788074655443
Data source: Temperature data for Kobayashi 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 Kobayashi

In Kobayashi in December, the total precipitation amount is 78 mm (3.1 in) over a duration of 7 days.

December Precipitation Trends in Kobayashi

The chart displays monthly precipitation patterns in Kobayashi, 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 Kobayashi, December typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec551021741502363494092252681709078
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kobayashi

In Kobayashi in December, humidity is 74%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable and may require travelers to dress in layers to stay warm and dry.

December Average Humidity in Kobayashi

This chart illustrates the average monthly humidity levels in Kobayashi, 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 Kobayashi is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%68%72%79%83%86%90%85%80%78%76%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kobayashi

In Kobayashi 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 Kobayashi for better planning.

Maximum UV Index Levels in Kobayashi for December

The chart shows the monthly maximum UV Index (UVI) for Kobayashi 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 Kobayashi typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5610101212121211864
Data source: Kobayashi 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 Kobayashi Compares to Other Months

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

This table compares monthly weather conditions in Kobayashi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)55 mm (2.2 inches)72%moderate
February Weather6°C (43°F)101 mm (4.0 inches)68%high
March Weather11°C (51°F)174 mm (6.9 inches)72%very high
April Weather15°C (59°F)150 mm (5.9 inches)79%very high
May Weather19°C (66°F)236 mm (9.3 inches)83%extreme
June Weather22°C (71°F)349 mm (13.7 inches)86%extreme
July Weather25°C (78°F)409 mm (16.1 inches)90%extreme
August Weather26°C (80°F)225 mm (8.9 inches)85%extreme
September Weather23°C (75°F)268 mm (10.5 inches)80%extreme
October Weather18°C (65°F)170 mm (6.7 inches)78%very high
November Weather12°C (54°F)90 mm (3.5 inches)76%high
December Weather6°C (44°F)78 mm (3.1 inches)74%moderate

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