San Pedro weather in September
September in San Pedro: sweltering, soaked, with clean air — an excellent time to visit.
#6 of 12 months in San Pedro · #294 of 604 destinations to visit in September · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
San Pedro climate normals — September
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 38°C / 100°F | |
| Rainfall | 153 mm / 6 in | ⛈ soaked |
| Rainy days | 26 days | |
| Humidity | 89% | 💦 very humid |
| Dew point | 24°C / 76°F | |
| Sunshine | 10.3 h/day | |
| Daylight | 12.2 h | |
| Wind | 9 km/h / 5 mph | |
| Air quality (US AQI) | 50 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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San Pedro in September — FAQ
- Is September a good time to visit San Pedro?
- September in San Pedro: sweltering, soaked, with clean air — an excellent time to visit. It ranks #6 of 12 months for San Pedro on SeasonMap's comfort score (81/100).
- What is the weather like in San Pedro in September?
- In September, San Pedro averages a daily high of 30.9°C and a low of 23.7°C, with about 153.1 mm of rain over roughly 25.6 rainy days.
- What is the air quality in San Pedro in September?
- San Pedro has a mean US Air Quality Index of about 50 in September.