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December Weather in Mizusawa, Japan

Last updated: August 23, 2025

In December, the average temperature in Mizusawa, Japan hovers around 1°C (33°F). Expect chilly days, with temperatures dipping as low as -10°C (14°F) and occasionally reaching a maximum of 14°C (58°F). During this month, precipitation is likely, totaling about 78 mm (3.1 in) over 17 days, all while the average humidity remains relatively high at 80%. Be prepared for a mix of cold and wet conditions!

December Temperature in Mizusawa

In December in Mizusawa, the average temperature is 1°C (33°F). The maximum can reach 14°C (58°F), while the minimum can drop as low as -10°C (14°F). Be prepared for a range of temperatures, so pack accordingly for your travels.

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

The chart illustrates December temperature patterns in Mizusawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mizusawa, December typically has an average temperature of 1°C (33°F), with highs reaching up to 14°C (58°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec293039475864727466554333
Data source: Temperature data for Mizusawa 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 Mizusawa

In Mizusawa in December, the precipitation amount is 78 mm (3.1 in) over a span of 17 days.

December Precipitation Trends in Mizusawa

The chart displays monthly precipitation patterns in Mizusawa, 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 Mizusawa, December typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec56691071191141291821671171545678
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mizusawa

In Mizusawa in December, humidity is 80%. With an average temperature of 1°C (33°F), this humidity feels like a damp chill that seeps into your bones, making travel outdoors an invigorating yet biting experience.

December Average Humidity in Mizusawa

This chart illustrates the average monthly humidity levels in Mizusawa, 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 Mizusawa 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 Mizusawa

In Mizusawa 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 Mizusawa, you can check the information here.

Maximum UV Index Levels in Mizusawa for December

The chart shows the monthly maximum UV Index (UVI) for Mizusawa 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 Mizusawa typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891010109643
Data source: Mizusawa 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 Mizusawa Compares to Other Months

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

This table compares monthly weather conditions in Mizusawa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (30°F)56 mm (2.2 inches)80%moderate
February Weather-1°C (31°F)69 mm (2.7 inches)79%moderate
March Weather4°C (39°F)106 mm (4.2 inches)77%high
April Weather8°C (47°F)119 mm (4.7 inches)75%very high
May Weather14°C (58°F)114 mm (4.5 inches)80%very high
June Weather18°C (65°F)129 mm (5.1 inches)87%very high
July Weather22°C (72°F)182 mm (7.2 inches)92%very high
August Weather23°C (74°F)167 mm (6.6 inches)92%very high
September Weather19°C (67°F)117 mm (4.6 inches)86%very high
October Weather13°C (55°F)154 mm (6.1 inches)82%high
November Weather6°C (44°F)56 mm (2.2 inches)79%moderate
December Weather1°C (33°F)78 mm (3.1 inches)80%moderate

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