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December Weather in Oami, Japan

Last updated: August 23, 2025

In Oami, Japan, the average temperature in December hovers around 9°C (49°F), with a minimum dipping to -1°C (31°F) and a maximum peaking at 22°C (71°F). Expect precipitation of approximately 78 mm (3.1 in) spread over 8 days, contributing to an average humidity level of 72%.

December Temperature in Oami

In December in Oami, the average temperature is 9°C (49°F). Maximums can reach 22°C (71°F) and minimums can be as low as -1°C (31°F). Be prepared for a mix of mild and chilly weather when planning your travels.

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

The chart illustrates December temperature patterns in Oami, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oami, December typically has an average temperature of 9°C (49°F), with highs reaching up to 22°C (71°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec444552586772798275675848
Data source: Temperature data for Oami 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 Oami

In Oami in December, the total precipitation amount is 78 mm (3.1 in) over the course of 8 days.

December Precipitation Trends in Oami

The chart displays monthly precipitation patterns in Oami, 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 Oami, December typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec584914811813117120510519227110778
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Oami

In Oami in December, humidity is 72%. With an average temperature of 9°C (49°F), this humidity feels like a chilly blanket wrapped around you, making travel feel damp and somewhat uncomfortable as you navigate the streets, heightening your awareness of every breeze.

December Average Humidity in Oami

This chart illustrates the average monthly humidity levels in Oami, 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 Oami is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%69%68%73%81%88%94%87%83%78%74%72%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Oami

In Oami in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Oami for better planning.

Maximum UV Index Levels in Oami for December

The chart shows the monthly maximum UV Index (UVI) for Oami 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 Oami typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589111111119754
Data source: Oami 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 Oami Compares to Other Months

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

This table compares monthly weather conditions in Oami, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)58 mm (2.3 inches)70%moderate
February Weather7°C (45°F)49 mm (1.9 inches)69%moderate
March Weather11°C (52°F)148 mm (5.8 inches)68%very high
April Weather15°C (58°F)117 mm (4.6 inches)73%very high
May Weather19°C (67°F)131 mm (5.1 inches)81%extreme
June Weather22°C (72°F)171 mm (6.7 inches)88%extreme
July Weather26°C (79°F)205 mm (8.1 inches)94%extreme
August Weather28°C (82°F)105 mm (4.1 inches)87%extreme
September Weather24°C (76°F)192 mm (7.6 inches)83%very high
October Weather19°C (67°F)271 mm (10.7 inches)78%high
November Weather15°C (59°F)107 mm (4.2 inches)74%moderate
December Weather9°C (49°F)78 mm (3.1 inches)72%moderate

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