Salta weather in September
September in Salta: nice, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Salta · #36 of 604 destinations to visit in September · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Salta climate normals — September
| Daytime high | 22°C / 72°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Feels like (high) | 21°C / 70°F | |
| Rainfall | 50 mm / 2 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 55% | 🍃 comfortable |
| Dew point | 5°C / 41°F | |
| Sunshine | 10.7 h/day | |
| Daylight | 12 h | |
| Wind | 11 km/h / 7 mph | |
| Snowfall | 0.1 cm / 0 in | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Salta?
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Salta in September — FAQ
- Is September a good time to visit Salta?
- September in Salta: nice, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Salta on SeasonMap's comfort score (92/100).
- What is the weather like in Salta in September?
- In September, Salta averages a daily high of 22°C and a low of 10.2°C, with about 49.8 mm of rain over roughly 7.2 rainy days.
- What is the air quality in Salta in September?
- Salta has a mean US Air Quality Index of about 38 in September.