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December Weather in Omagari, Japan

Last updated: August 23, 2025

In December, the average temperature in Omagari, Japan hovers around 1°C (35°F). Expect chilly conditions, with minimums dipping to -9°C (17°F) and maximums reaching 14°C (58°F). The region experiences notable precipitation, totaling 157 mm (6.2 in) over approximately 25 days, accompanied by an average humidity of 80%. Prepare for wet and cool days ahead!

December Temperature in Omagari

In December in Omagari, the average temperature is 1°C (35°F). The maximum can reach 14°C (58°F) and the minimum can be as low as -9°C (17°F). Be sure to pack warm clothing if you're planning to visit during this time, as temperatures can vary significantly.

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

The chart illustrates December temperature patterns in Omagari, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Omagari, December typically has an average temperature of 1°C (35°F), with highs reaching up to 14°C (58°F) and lows dropping to around -9°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec303140485966747668574635
Data source: Temperature data for Omagari 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 Omagari

In Omagari in December, the precipitation amount is 157 mm (6.2 in), occurring over a span of 25 days.

December Precipitation Trends in Omagari

The chart displays monthly precipitation patterns in Omagari, 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 Omagari, December typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec108127125141135147191210133159128157
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Omagari

In Omagari in December, humidity is 80%. With an average temperature of 1°C (35°F), this humidity feels like a cold, damp embrace that makes traveling quite uncomfortable, as it seeps into your clothes and makes the air feel heavier, making it hard to stay warm and dry while exploring.

December Average Humidity in Omagari

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

In Omagari 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 Omagari, you can check the information here.

Maximum UV Index Levels in Omagari for December

The chart shows the monthly maximum UV Index (UVI) for Omagari 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 Omagari typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891010119643
Data source: Omagari 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 Omagari Compares to Other Months

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

This table compares monthly weather conditions in Omagari, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)108 mm (4.2 inches)80%moderate
February Weather-1°C (31°F)127 mm (5.0 inches)79%moderate
March Weather4°C (40°F)125 mm (4.9 inches)77%high
April Weather9°C (48°F)141 mm (5.6 inches)75%very high
May Weather15°C (59°F)135 mm (5.3 inches)80%very high
June Weather19°C (66°F)147 mm (5.8 inches)87%very high
July Weather23°C (74°F)191 mm (7.5 inches)92%very high
August Weather24°C (76°F)210 mm (8.2 inches)92%extreme
September Weather20°C (68°F)133 mm (5.2 inches)86%very high
October Weather14°C (57°F)159 mm (6.3 inches)82%high
November Weather8°C (46°F)127 mm (5.0 inches)79%moderate
December Weather1°C (35°F)157 mm (6.2 inches)80%moderate

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