San Pedro de Atacama weather in September
September in San Pedro de Atacama: nice, dry, with clean air — an excellent time to visit.
#8 of 12 months in San Pedro de Atacama · #49 of 604 destinations to visit in September · comfort 91/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
San Pedro de Atacama climate normals — September
| Daytime high | 22°C / 72°F | 😎 nice |
|---|---|---|
| Nighttime low | 3°C / 38°F | |
| Feels like (high) | 19°C / 66°F | |
| Rainfall | 1 mm / 0 in | ☀️ dry |
| Rainy days | 0 days | |
| Humidity | 16% | 🌵 dry |
| Dew point | -16°C / 3°F | |
| Sunshine | 11.1 h/day | |
| Daylight | 12 h | |
| Wind | 17 km/h / 11 mph | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is San Pedro de Atacama?
Loading map…
San Pedro de Atacama in September — FAQ
- Is September a good time to visit San Pedro de Atacama?
- September in San Pedro de Atacama: nice, dry, with clean air — an excellent time to visit. It ranks #8 of 12 months for San Pedro de Atacama on SeasonMap's comfort score (91/100).
- What is the weather like in San Pedro de Atacama in September?
- In September, San Pedro de Atacama averages a daily high of 22.1°C and a low of 3.2°C, with about 0.8 mm of rain over roughly 0.4 rainy days.
- What is the air quality in San Pedro de Atacama in September?
- San Pedro de Atacama has a mean US Air Quality Index of about 37 in September.