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December Weather in Trabuco Canyon, United States

Last updated: June 24, 2025

In December, the average temperature in Trabuco Canyon, United States hovers around 13°C (55°F), offering a comfortable climate for locals and visitors alike. You can expect temperatures to range from a chilly 1°C (34°F) at night to a pleasantly warm 28°C (83°F) during the day. However, do prepare for precipitation; with about 85 mm (3.3 in) of rainfall spread across 5 days, it's a good idea to carry an umbrella. Additionally, the average humidity sits at a moderate 71%, making it a delightful time to explore the area!

December Temperature in Trabuco Canyon

In December in Trabuco Canyon, the average temperature is 13°C (55°F). The maximum can reach 28°C (83°F), while the minimum can dip as low as 1°C (34°F). This varied climate makes Trabuco Canyon an ideal destination for travelers looking to experience a mix of warm and cool weather.

December Weather in Trabuco Canyon: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Trabuco Canyon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trabuco Canyon, December typically has an average temperature of 13°C (55°F), with highs reaching up to 28°C (83°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec555557636571777775696255
Data source: Temperature data for Trabuco Canyon 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 Trabuco Canyon

In Trabuco Canyon in December, the total precipitation amount reaches 85 mm (3.3 in) over the course of 5 days.

December Precipitation Trends in Trabuco Canyon

The chart displays monthly precipitation patterns in Trabuco Canyon, 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 Trabuco Canyon, December typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec84789436212224133485
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Trabuco Canyon

In Trabuco Canyon in December humidity is 71%. With an average temperature of 13°C (55°F), this humidity feels like a damp embrace, making travel a bit challenging as the moisture clings to your skin and the air feels thick, creating a sense of heaviness that can sap your energy while exploring.

December Average Humidity in Trabuco Canyon

This chart illustrates the average monthly humidity levels in Trabuco Canyon, 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 Trabuco Canyon is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Trabuco Canyon

In Trabuco Canyon 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 Trabuco Canyon for better planning.

Maximum UV Index Levels in Trabuco Canyon for December

The chart shows the monthly maximum UV Index (UVI) for Trabuco Canyon 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 Trabuco Canyon typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010754
Data source: Trabuco Canyon 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 Trabuco Canyon Compares to Other Months

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

This table compares monthly weather conditions in Trabuco Canyon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)84 mm (3.3 inches)74%moderate
February Weather13°C (55°F)78 mm (3.1 inches)79%high
March Weather14°C (58°F)94 mm (3.7 inches)75%very high
April Weather17°C (63°F)36 mm (1.4 inches)70%very high
May Weather18°C (65°F)21 mm (0.8 inches)70%extreme
June Weather21°C (71°F)2 mm (0.1 inches)72%extreme
July Weather25°C (77°F)2 mm (0.1 inches)73%extreme
August Weather25°C (78°F)2 mm (0.1 inches)69%very high
September Weather24°C (75°F)4 mm (0.2 inches)68%very high
October Weather20°C (69°F)13 mm (0.5 inches)67%high
November Weather17°C (62°F)34 mm (1.3 inches)68%moderate
December Weather13°C (55°F)85 mm (3.3 inches)71%moderate

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