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September Weather in Trabuco Canyon, United States

Last updated: June 24, 2025

In Trabuco Canyon, United States, the average temperature in September hovers around 24°C (75°F), creating a pleasant environment for outdoor activities. However, temperatures can fluctuate significantly, with a minimum of 13°C (55°F) and soaring up to a sizzling 44°C (112°F). Rainfall is minimal, with an average precipitation of just 4 mm (0.2 in) over 0 days, while the average humidity sits at 68%. Enjoy the warmth while staying hydrated!

September Temperature in Trabuco Canyon

In September in Trabuco Canyon, the average temperature is 24°C (75°F). Maximum can reach 44°C (112°F), and minimum can be as low as 13°C (55°F). Be prepared for warm days and cool evenings, making it an ideal time for outdoor activities and exploration.

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

The chart illustrates September 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, September typically has an average temperature of 24°C (75°F), with highs reaching up to 44°C (112°F) and lows dropping to around 13°C (55°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.

September Precipitation in Trabuco Canyon

In Trabuco Canyon in September, the precipitation amount is 4 mm (0.2 in) over the course of 0 days.

September Precipitation Trends in Trabuco Canyon

The chart displays monthly precipitation patterns in Trabuco Canyon, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Trabuco Canyon, September typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec84789436212224133485
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trabuco Canyon

In Trabuco Canyon in September, humidity is 68%. With an average temperature of 24°C (75°F), this humidity feels like a warm, enveloping embrace that can leave travelers feeling sticky and slightly fatigued, making it essential to stay hydrated and take breaks in shaded areas.

September Average Humidity in Trabuco Canyon

This chart illustrates the average monthly humidity levels in Trabuco Canyon, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Trabuco Canyon is approximately 68%, 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 September generated using information from the Copernicus Climate Change Service.

September UV Index in Trabuco Canyon

In Trabuco Canyon in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Trabuco Canyon.

Maximum UV Index Levels in Trabuco Canyon for September

The chart shows the monthly maximum UV Index (UVI) for Trabuco Canyon in September, 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 September, the maximum UV index in Trabuco Canyon typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010754
Data source: Trabuco Canyon September 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 September 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 September’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 September’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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