September Weather in Los Angeles, Mexico

Last updated: August 26, 2025

In Los Angeles, Mexico, the average temperature in September reaches 26°C (79°F), making it a pleasant time to enjoy the outdoors. However, be prepared for a temperature range that can dip to a minimum of 17°C (63°F) and soar to a maximum of 38°C (101°F). During this month, precipitation averages 52 mm (2.0 in) over 7 days, while the average humidity stands at a high 82%.

September Temperature in Los Angeles

In September in Los Angeles, the average temperature is 26°C (79°F). The maximum can reach 38°C (101°F), and the minimum can be as low as 17°C (63°F). It’s a great time to visit for those who enjoy warm weather and outdoor activities.

September Weather in Los Angeles: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Los Angeles, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Los Angeles, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (101°F) and lows dropping to around 17°C (63°F).

Data source: Temperature data for Los Angeles generated using information from the Copernicus Climate Change Service.

September Precipitation in Los Angeles

In Los Angeles in September, the precipitation amount is 52 mm (2.0 in) over a duration of 7 days.

September Precipitation Trends in Los Angeles

The chart displays monthly precipitation patterns in Los Angeles, 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 Los Angeles, September typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 7 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Los Angeles

In Los Angeles in September, humidity is 82%. With an average temperature of 26°C (79°F), this humidity feels like a warm blanket that envelops you, making outdoor activities feel more taxing and requiring frequent breaks to stay hydrated.

September Average Humidity in Los Angeles

This chart illustrates the average monthly humidity levels in Los Angeles, 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 Los Angeles is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Los Angeles

In Los Angeles in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Los Angeles.

Maximum UV Index Levels in Los Angeles for September

The chart shows the monthly maximum UV Index (UVI) for Los Angeles 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 Los Angeles typically reaches 13, which falls under the extreme exposure category.

Data source: Los Angeles 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 Los Angeles Compares to Other Months

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

This table compares monthly weather conditions in Los Angeles, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (60°F)	5 mm (0.2 inches)	70%	high
February Weather	19°C (67°F)	5 mm (0.2 inches)	62%	very high
March Weather	22°C (72°F)	7 mm (0.3 inches)	53%	extreme
April Weather	26°C (78°F)	2 mm (0.1 inches)	48%	extreme
May Weather	29°C (84°F)	5 mm (0.2 inches)	52%	extreme
June Weather	29°C (85°F)	17 mm (0.7 inches)	64%	extreme
July Weather	28°C (83°F)	40 mm (1.6 inches)	73%	extreme
August Weather	28°C (83°F)	24 mm (0.9 inches)	71%	extreme
September Weather	26°C (79°F)	52 mm (2.0 inches)	82%	extreme
October Weather	24°C (75°F)	32 mm (1.3 inches)	83%	extreme
November Weather	19°C (67°F)	6 mm (0.3 inches)	82%	very high
December Weather	16°C (61°F)	12 mm (0.5 inches)	84%	high