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September Weather in Los Angeles, Peru

Last updated: August 27, 2025

In September, the average temperature in Los Angeles, Peru is a pleasant 21°C (70°F), with lows dipping to 13°C (55°F) and highs reaching up to 31°C (88°F). Expect 129 mm (5.1 in) of precipitation spread over 24 days, resulting in an average humidity of 42%. Enjoy the mild climate, but don't forget your umbrella! 🌧️

September Temperature in Los Angeles

In September in Los Angeles, the average temperature is 21°C (70°F), with maximums reaching 31°C (88°F) and minimums dropping to as low as 13°C (55°F). This pleasant weather makes Los Angeles an ideal destination for travelers seeking comfortable conditions and enjoyable 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 21°C (70°F), with highs reaching up to 31°C (88°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec707170707069686970707171
Data source: Temperature data for Los Angeles 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 Los Angeles

In Los Angeles in September, the precipitation amount is 129 mm (5.1 in) over the course of 24 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 129 mm (5.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec25019229325020615812394129211236217
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Los Angeles

In Los Angeles in September humidity is 42%. With an average temperature of 21°C (70°F), this humidity feels like a comfortable embrace, perfect for exploring the sights without feeling overly sticky or weighed down, making it an ideal time for traveling.

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 42%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%76%81%86%86%70%47%37%42%62%76%89%
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 an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. 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 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161718171412121315161515
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.
 TemperaturePrecipitationHumidityUV
January Weather21°C (71°F)250 mm (9.8 inches)80%extreme
February Weather22°C (71°F)192 mm (7.5 inches)76%extreme
March Weather21°C (71°F)293 mm (11.5 inches)81%extreme
April Weather21°C (70°F)250 mm (9.9 inches)86%extreme
May Weather21°C (70°F)206 mm (8.1 inches)86%extreme
June Weather21°C (69°F)158 mm (6.2 inches)70%extreme
July Weather20°C (68°F)123 mm (4.8 inches)47%extreme
August Weather20°C (69°F)94 mm (3.7 inches)37%extreme
September Weather21°C (70°F)129 mm (5.1 inches)42%extreme
October Weather21°C (71°F)211 mm (8.3 inches)62%extreme
November Weather22°C (72°F)236 mm (9.3 inches)76%extreme
December Weather22°C (71°F)217 mm (8.5 inches)89%extreme

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