Puerto Vallarta weather in September
September in Puerto Vallarta: sweltering, soaked, with clean air — a good time to visit.
#12 of 12 months in Puerto Vallarta · #505 of 604 destinations to visit in September · comfort 62/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Puerto Vallarta climate normals — September
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 76°F | |
| Feels like (high) | 39°C / 102°F | |
| Rainfall | 347 mm / 13.7 in | ⛈ soaked |
| Rainy days | 29 days | |
| Humidity | 90% | 💦 very humid |
| Dew point | 26°C / 78°F | |
| Sunshine | 8.8 h/day | |
| Daylight | 12.3 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 33 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Puerto Vallarta in September — FAQ
- Is September a good time to visit Puerto Vallarta?
- September in Puerto Vallarta: sweltering, soaked, with clean air — a good time to visit. It ranks #12 of 12 months for Puerto Vallarta on SeasonMap's comfort score (62/100).
- What is the weather like in Puerto Vallarta in September?
- In September, Puerto Vallarta averages a daily high of 31°C and a low of 24.7°C, with about 347 mm of rain over roughly 29 rainy days.
- What is the air quality in Puerto Vallarta in September?
- Puerto Vallarta has a mean US Air Quality Index of about 33 in September.