Nha Trang weather in September
September in Nha Trang: sweltering, soaked, with clean air — a good time to visit.
#11 of 12 months in Nha Trang · #462 of 604 destinations to visit in September · comfort 66/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Nha Trang climate normals — September
| Daytime high | 31°C / 87°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 37°C / 99°F | |
| Rainfall | 326 mm / 12.8 in | ⛈ soaked |
| Rainy days | 27 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 25°C / 77°F | |
| Sunshine | 9.1 h/day | |
| Daylight | 12.2 h | |
| Wind | 6 km/h / 4 mph | |
| Air quality (US AQI) | 49 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Nha Trang?
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Nha Trang in September — FAQ
- Is September a good time to visit Nha Trang?
- September in Nha Trang: sweltering, soaked, with clean air — a good time to visit. It ranks #11 of 12 months for Nha Trang on SeasonMap's comfort score (66/100).
- What is the weather like in Nha Trang in September?
- In September, Nha Trang averages a daily high of 30.5°C and a low of 25.5°C, with about 325.7 mm of rain over roughly 26.8 rainy days.
- What is the air quality in Nha Trang in September?
- Nha Trang has a mean US Air Quality Index of about 49 in September.