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December Weather in Okazaki, Japan

Last updated: August 23, 2025

In December, the average temperature in Okazaki, Japan hovers around 7°C (45°F). Expect a chilly minimum of -5°C (24°F) and a comfortable maximum of 20°C (69°F). During this period, the area receives an average precipitation of 62 mm (2.4 in) over 7 days, contributing to a notably high average humidity of 83%. Prepare accordingly for a mix of cool and wet conditions!

December Temperature in Okazaki

In December in Okazaki, the average temperature is 7°C (45°F). The maximum can reach 20°C (69°F), and the minimum can be as low as -5°C (24°F). Be prepared for a range of temperatures if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Okazaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Okazaki, December typically has an average temperature of 7°C (45°F), with highs reaching up to 20°C (69°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec404250576672798275655445
Data source: Temperature data for Okazaki 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 Okazaki

In Okazaki in December, the total precipitation amount is 62 mm (2.4 in) observed over a span of 7 days.

December Precipitation Trends in Okazaki

The chart displays monthly precipitation patterns in Okazaki, 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 Okazaki, December typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec52661531711962144472442252626162
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Okazaki

In Okazaki in December, humidity is 83%. With an average temperature of 7°C (45°F), this humidity feels like a chilly blanket wrapping around you, making travel somewhat uncomfortable as you navigate the dampness that settles in your clothes, leading to a heavy and muggy experience outdoors.

December Average Humidity in Okazaki

This chart illustrates the average monthly humidity levels in Okazaki, 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 Okazaki is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Okazaki

In Okazaki 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 Okazaki, you can check the information here.

Maximum UV Index Levels in Okazaki for December

The chart shows the monthly maximum UV Index (UVI) for Okazaki 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 Okazaki typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110753
Data source: Okazaki 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 Okazaki Compares to Other Months

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

This table compares monthly weather conditions in Okazaki, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)52 mm (2.0 inches)82%moderate
February Weather5°C (42°F)66 mm (2.6 inches)79%high
March Weather10°C (50°F)153 mm (6.0 inches)74%very high
April Weather14°C (58°F)171 mm (6.7 inches)76%very high
May Weather19°C (66°F)196 mm (7.7 inches)83%extreme
June Weather22°C (72°F)214 mm (8.4 inches)87%extreme
July Weather26°C (79°F)447 mm (17.6 inches)93%extreme
August Weather28°C (82°F)244 mm (9.6 inches)91%extreme
September Weather24°C (75°F)225 mm (8.8 inches)87%very high
October Weather18°C (65°F)262 mm (10.3 inches)85%high
November Weather12°C (55°F)61 mm (2.4 inches)83%moderate
December Weather7°C (45°F)62 mm (2.4 inches)83%moderate

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