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December Weather in Furukawa, Japan

Last updated: August 23, 2025

In December, the average temperature in Furukawa, Japan hovers around 4°C (39°F). During this time, temperatures can dip as low as -5°C (24°F) and peak at 15°C (60°F). Expect 62 mm (2.4 in) of precipitation spread over 12 days, contributing to an average humidity level of 80%.

December Temperature in Furukawa

In December in Furukawa, the average temperature is 4°C (39°F). The maximum can reach 15°C (60°F), and the minimum can be as low as -5°C (24°F). Travelers should be prepared for cool weather with a mix of chilly days and milder afternoons.

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

The chart illustrates December temperature patterns in Furukawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Furukawa, December typically has an average temperature of 4°C (39°F), with highs reaching up to 15°C (60°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec353743516167757770604939
Data source: Temperature data for Furukawa 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 Furukawa

In Furukawa in December, the precipitation amount is 62 mm (2.4 in) spread over 12 days.

December Precipitation Trends in Furukawa

The chart displays monthly precipitation patterns in Furukawa, 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 Furukawa, December typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec55471091111051062142161381984162
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Furukawa

In Furukawa in December, humidity is 80%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and requiring extra layers to stay warm while navigating through the misty streets.

December Average Humidity in Furukawa

This chart illustrates the average monthly humidity levels in Furukawa, 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 Furukawa is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Furukawa

In Furukawa 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 Furukawa, you can check the information here.

Maximum UV Index Levels in Furukawa for December

The chart shows the monthly maximum UV Index (UVI) for Furukawa 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 Furukawa typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3478101011119643
Data source: Furukawa 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 Furukawa Compares to Other Months

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

This table compares monthly weather conditions in Furukawa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)55 mm (2.1 inches)80%moderate
February Weather3°C (37°F)47 mm (1.9 inches)79%moderate
March Weather6°C (43°F)109 mm (4.3 inches)77%high
April Weather10°C (51°F)111 mm (4.4 inches)75%very high
May Weather16°C (62°F)105 mm (4.1 inches)80%very high
June Weather20°C (68°F)105 mm (4.2 inches)87%very high
July Weather24°C (75°F)214 mm (8.4 inches)92%extreme
August Weather25°C (78°F)216 mm (8.5 inches)92%extreme
September Weather21°C (71°F)138 mm (5.4 inches)86%very high
October Weather16°C (61°F)198 mm (7.8 inches)82%high
November Weather10°C (50°F)41 mm (1.6 inches)79%moderate
December Weather4°C (39°F)62 mm (2.4 inches)80%moderate

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