September marks the transition into autumn, bringing cooler and more pleasant weather compared to the summer months. Daytime temperatures typically range from 28°C - 29°C, while nighttime temperatures may drop to around 23°C - 24°C. The weather is generally dry, with a mix of sunshine and clouds and an average of 6–7 hours of sunshine per day. Humidity remains relatively comfortable at around 72% - 75%. As the dry season begins, rainfall decreases significantly, making it less likely for rain to disrupt your journey.
Weather Forecast
HA LONG - SEPTEMBER
Day: 29°C
Night: 23°C
Partly sunny & cloudy
Day: 28°C
Night: 24°C
Partly sunny & cloudy
Day: 29°C
Night: 24°C
Partly sunny & cloudy
Day 1: Saturday
Sep 12, 2026
Day 2: Sunday
Sep 13, 2026
Day 3: Monday
Sep 14, 2026