Vietnam in September: where is it warmest?
In September, Ho Chi Minh City is the warmest place with 31 °C by day, Sa Pa the coolest with 23 °C. 3 of 9 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Ho Chi Minh City | 33 | 31° | – | 4 h | 28 |
| Da Nang | 68 | 30° | 29° | 5 h | 23 |
| Nha Trang | 68 | 30° | 29° | 6 h | 20 |
| Huế | 40 | 30° | – | 5 h | 24 |
| Hoi An | 37 | 30° | 29° | 5 h | 23 |
| Ha Long Bay | 36 | 30° | 29° | 5 h | 21 |
| Hanoi | 34 | 30° | – | 5 h | 19 |
| Phu Quoc (Duong Dong) | 64 | 28° | 29° | 4 h | 27 |
| Sa Pa | 55 | 23° | – | 5 h | 23 |
Vietnam in September: quick answers
Vietnam in September: where is it warmest?
The warmest places in September are Ho Chi Minh City (31 °C), Da Nang (30 °C) and Nha Trang (30 °C).
Vietnam in September: where is the sea warmest?
The sea is warmest at Da Nang (29 °C), Nha Trang (29 °C) and Hoi An (29 °C).
Vietnam in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Da Nang, Nha Trang and Phu Quoc (Duong Dong).
Vietnam month by month
Vietnam: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences