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December Weather in Sarabetsu, Japan

Last updated: August 23, 2025

In December, the average temperature in Sarabetsu, Japan hovers around -4°C (26°F), showcasing the chill of the season. Temperatures can dip as low as -18°C (0°F), while occasionally peaking at a milder 14°C (57°F). Expect about 55 mm (2.2 in) of precipitation spread over 7 days, coupled with an average humidity of 79%, making it a notably brisk and damp period.

December Temperature in Sarabetsu

In December in Sarabetsu, the average temperature is -4°C (26°F), with a maximum that can reach 14°C (57°F) and a minimum that can drop to as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures and dress warmly to enjoy their visit.

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

The chart illustrates December temperature patterns in Sarabetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sarabetsu, December typically has an average temperature of -4°C (26°F), with highs reaching up to 14°C (57°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec192132435459666762513926
Data source: Temperature data for Sarabetsu 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 Sarabetsu

In Sarabetsu in December, the precipitation amount is 55 mm (2.2 in) over the course of 7 days.

December Precipitation Trends in Sarabetsu

The chart displays monthly precipitation patterns in Sarabetsu, 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 Sarabetsu, December typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec57571009387107901711421708555
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sarabetsu

In Sarabetsu in December, humidity is 79%. With an average temperature of -4°C (26°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities more strenuous and uncomfortable for travelers unprepared for the cold's damp embrace.

December Average Humidity in Sarabetsu

This chart illustrates the average monthly humidity levels in Sarabetsu, 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 Sarabetsu is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%83%86%88%93%96%89%83%80%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sarabetsu

In Sarabetsu 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 Sarabetsu, you can visit Hourly UV Index in Sarabetsu.

Maximum UV Index Levels in Sarabetsu for December

The chart shows the monthly maximum UV Index (UVI) for Sarabetsu 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 Sarabetsu typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec345891010108632
Data source: Sarabetsu 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 Sarabetsu Compares to Other Months

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

This table compares monthly weather conditions in Sarabetsu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)56 mm (2.2 inches)84%moderate
February Weather-6°C (21°F)57 mm (2.2 inches)83%moderate
March Weather0°C (33°F)100 mm (3.9 inches)83%moderate
April Weather6°C (43°F)93 mm (3.6 inches)83%very high
May Weather12°C (55°F)87 mm (3.4 inches)86%very high
June Weather15°C (60°F)107 mm (4.2 inches)88%very high
July Weather19°C (67°F)90 mm (3.6 inches)93%very high
August Weather20°C (68°F)171 mm (6.7 inches)96%very high
September Weather17°C (62°F)142 mm (5.6 inches)89%very high
October Weather11°C (52°F)170 mm (6.7 inches)83%high
November Weather4°C (40°F)85 mm (3.3 inches)80%moderate
December Weather-4°C (26°F)55 mm (2.2 inches)79%low

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