Hội An weather in September
September in Hội An: sweltering, soaked, with very humid — one of the weakest months to visit.
#12 of 12 months in Hội An · #578 of 604 destinations to visit in September · comfort 46/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Hội An climate normals — September
| Daytime high | 31°C / 87°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 37°C / 99°F | |
| Rainfall | 328 mm / 12.9 in | ⛈ soaked |
| Rainy days | 24 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 12.2 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 82 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Hội An?
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Hội An in September — FAQ
- Is September a good time to visit Hội An?
- September in Hội An: sweltering, soaked, with very humid — one of the weakest months to visit. It ranks #12 of 12 months for Hội An on SeasonMap's comfort score (46/100).
- What is the weather like in Hội An in September?
- In September, Hội An averages a daily high of 30.6°C and a low of 25.8°C, with about 328 mm of rain over roughly 24.2 rainy days.
- What is the air quality in Hội An in September?
- Hội An has a mean US Air Quality Index of about 82 in September.