Los Angeles weather in September
September in Los Angeles: hot, dry — an excellent time to visit.
#9 of 12 months in Los Angeles · #244 of 604 destinations to visit in September · comfort 83/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Los Angeles climate normals — September
| Daytime high | 32°C / 90°F | 🥵 hot |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 7 mm / 0.3 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 63% | 💧 humid |
| Dew point | 15°C / 60°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 12.4 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 59 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Los Angeles in September — FAQ
- Is September a good time to visit Los Angeles?
- September in Los Angeles: hot, dry — an excellent time to visit. It ranks #9 of 12 months for Los Angeles on SeasonMap's comfort score (83/100).
- What is the weather like in Los Angeles in September?
- In September, Los Angeles averages a daily high of 32.1°C and a low of 18.4°C, with about 7.4 mm of rain over roughly 1.2 rainy days.
- What is the air quality in Los Angeles in September?
- Los Angeles has a mean US Air Quality Index of about 59 in September.