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December Weather in Hirakawa, Japan

Last updated: August 23, 2025

In December, the average temperature in Hirakawa, Japan hovers around -1°C (31°F), with a minimum dip as low as -10°C (14°F) and a maximum reaching 12°C (55°F). Prepare for a tendency of frequent precipitation, totaling 133 mm (5.2 in) over 25 days, accompanied by an average humidity level of 77%. Whether embracing the chill or navigating the rainy days, be ready for a uniquely crisp experience!

December Temperature in Hirakawa

In December, in Hirakawa, the average temperature is -1°C (31°F), with maximums reaching 12°C (55°F) and minimums dropping as low as -10°C (14°F). Travelers should be prepared for chilly conditions and pack appropriately to enjoy their visit.

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

The chart illustrates December temperature patterns in Hirakawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hirakawa, December typically has an average temperature of -1°C (31°F), with highs reaching up to 12°C (55°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec272836455764727366544331
Data source: Temperature data for Hirakawa 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 Hirakawa

In Hirakawa in December, the precipitation amount is 133 mm (5.2 in) distributed over 25 days.

December Precipitation Trends in Hirakawa

The chart displays monthly precipitation patterns in Hirakawa, 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 Hirakawa, December typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec84116112129111141152183140175115133
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hirakawa

In Hirakawa in December, humidity is 77%. With an average temperature of -1°C (31°F), this humidity feels like a heavy fog wrapping around you, making travel challenging as the cold air clings to your skin, and each breath becomes a visible puff, reminding you of the biting chill.

December Average Humidity in Hirakawa

This chart illustrates the average monthly humidity levels in Hirakawa, 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 Hirakawa is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%78%77%78%86%91%95%97%89%82%78%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hirakawa

In Hirakawa in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Hirakawa, you can visit Hourly UV Index in Hirakawa.

Maximum UV Index Levels in Hirakawa for December

The chart shows the monthly maximum UV Index (UVI) for Hirakawa 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 Hirakawa typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891010119642
Data source: Hirakawa 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 Hirakawa Compares to Other Months

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

This table compares monthly weather conditions in Hirakawa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)84 mm (3.3 inches)79%moderate
February Weather-2°C (29°F)116 mm (4.6 inches)78%moderate
March Weather2°C (36°F)112 mm (4.4 inches)77%high
April Weather7°C (45°F)129 mm (5.1 inches)78%very high
May Weather14°C (57°F)111 mm (4.4 inches)86%very high
June Weather18°C (64°F)141 mm (5.5 inches)91%very high
July Weather22°C (72°F)152 mm (6.0 inches)95%very high
August Weather23°C (74°F)183 mm (7.2 inches)97%extreme
September Weather19°C (66°F)140 mm (5.5 inches)89%very high
October Weather12°C (54°F)175 mm (6.9 inches)81%high
November Weather6°C (43°F)115 mm (4.5 inches)78%moderate
December Weather-1°C (31°F)133 mm (5.2 inches)77%low

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