Los Angeles weather in September 2025

Expect 28°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Los Angeles in September. Check more long-term weather averages for Los Angeles in September before you book your next holiday to California in 2025/2026.

  • 28°C maximum daytime temperature in September in Los Angeles28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 2 days with some rainfall in September in Los Angeles2
    2 days with some rainfall
  • 17°C minimum night-time temperature in September in Los Angeles17
    17°C min night temperature
  • 12 hours of daylight per day in September in Los Angeles12
    12 hours of daylight per day
  • Moderate heat & humidity in September in Los AngelesM
    Moderate heat & humidity
  • 9 mm monthly rainfall in September in Los Angeles9
    9 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Los Angeles8
    8 (Very High) UV index

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The September weather guide for California (Los Angeles) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about California

How hot is it in Los Angeles in September?

Daytime temperatures usually reach 28°C in Los Angeles in September with moderate heat and humidity, falling to 17°C at night.

How sunny is it in Los Angeles in September?

There are normally 9 hours of bright sunshine each day in Los Angeles in September - that's 75% of daylight hours.

Does it ever rain in Los Angeles in September?

There are usually 2 days with some rain in Los Angeles in September and the average monthly rainfall is 9mm.

Los Angeles September sunrise & sunset times

Browse the sunrise and sunset times for Los Angeles in September 2025. Select a month to view Los Angeles sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:27 18:18
Monday, 15th September 2025 05:37 17:59
Tuesday, 30th September 2025 05:47 17:38

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