Los Cabos weather in September
September in Los Cabos: sweltering, rainy, with clean air — an excellent time to visit.
#11 of 12 months in Los Cabos · #269 of 604 destinations to visit in September · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Los Cabos climate normals — September
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Feels like (high) | 37°C / 99°F | |
| Rainfall | 92 mm / 3.6 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 10.9 h/day | |
| Daylight | 12.3 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Los Cabos?
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Los Cabos in September — FAQ
- Is September a good time to visit Los Cabos?
- September in Los Cabos: sweltering, rainy, with clean air — an excellent time to visit. It ranks #11 of 12 months for Los Cabos on SeasonMap's comfort score (82/100).
- What is the weather like in Los Cabos in September?
- In September, Los Cabos averages a daily high of 31.2°C and a low of 26.8°C, with about 91.9 mm of rain over roughly 8.8 rainy days.
- What is the air quality in Los Cabos in September?
- Los Cabos has a mean US Air Quality Index of about 39 in September.