Los Angeles Weather in September
September in Los Angeles sees daytime temperatures around 25°C (77°F) and lows of 18°C (64°F) at night. The perfect weather makes it a good time to visit.
Rainfall in Los Angeles in September
Typically, about 0 days will experience rainfall, with an average of 4.6 mm (0.2 in) for the month.
Temperature in Los Angeles in September
September is a good time to be in Los Angeles. Days are perfect, reaching 25°C (77°F), with nights around 18°C (64°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, it sees the highest temps of the year.
Sunshine in Los Angeles in September
With approximately 278 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Los Angeles in September
September has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.
Average water temperature in September
At 18°C (64°F), the water is getting there — comfortable enough for most swimmers, though those used to warmer seas may still find it a touch cool.If your ideal day consists of dry skies and pleasant temperatures, January, March, April, May, June, July, August, September, October and November typically offer the best circumstances for Los Angeles.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Los Angeles's climate page.
Los Angeles Temperature in September
Min Temperature
18°C (64°F)
Max Temperature
25°C (77°F)
Water Temperature
18°C (64°F)
Chance of Rain
0%
Precipitation
4.6 mm (0.2 in)
Rainy days
0 days
Humidity
67%
Windspeed
3 m/s (6 knots)
Sunshine
278 hours
Percentage Sunshine
75%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Los Angeles typically stay consistent throughout September, with daily highs averaging around 25°C (77°F). Nights are pleasant, with lows around 18°C (64°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Los Angeles in September
Browse day-by-day weather records for Los Angeles spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Los Angeles historical weather extremes in September
Our historical data for Los Angeles spans 1976 to 2025, revealing these weather extremes.
- Los Angeles recorded its highest September temperature of 39°C (102°F) on September 24, 1978.
- The lowest daytime temperature in September was 17°C (63°F), recorded on September 11, 2010.
- The lowest overnight temperature recorded in September was 13°C (55°F) (September 20, 1999).
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
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What to Wear in Los Angeles in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection. The water temperature sits at about 18°C (64°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Los Angeles in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Los Angeles's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Los Angeles climate overview or explore weather in the United States of America.
