Los Angeles Weather in September
What's the weather like in Los Angeles (California) in September 2025?
The climate in Los Angeles during September can be summarized as warm and very dry.
September is in the fall / autumn in Los Angeles and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 29°C (83°F), whilst at night 17°C (63°F) is normal.
| Daytime temperature | 28.6°C 83.4°F |
|---|---|
| Nightly temperature | 17.3°C 63.1°F |
| Average temperature | 22.9°C 73.2°F |
| Daily sunshine | 10.1 hrs |
| Avg rainfall | 9 mm 0.4 ins |
| Rainy days | 2 days |
| Sea temperature | 18.6°C 65.5°F |
| Humidity | 68% |
| Windspeed | 12.2kph 8 mph |
On average September is the 6th driest month of the year in Los Angeles with around 9mm 0.4 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 10.1 hours of sunshine per day.
September temperatures in Los Angeles
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Los Angeles in September 2025.
Other monthly averages
Best places to visit in September
Los Angeles weather stats
| Hottest month: | August | 29.3°C 84.7°F |
|---|---|---|
| Driest month: | July | 1mm 0ins |
| Sunniest month: | August | 11.7hrs |
| Coldest month: | January | 19.3°C 66.7°F |
| Wettest month: | January | 80mm 3.1ins |
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