September is the transitional month from the strongly hot summer to the calm and cool autumn. Sky is clear and sun shines lightly. The average temperature drops to about 28oC with maximum temperature at noon is about 31oC and night temperature is as low as 25oC. Despite still be at a high level of 328mm, the amount of rainfall records a significant decrease in compare to July and August. The sea water temperature starts to cool down to 29oC.
Clothes guidance: Dress comfortably with shorts, T-shirts, tank tops and dresses to look your best in your travel pictures. Don’t forget to bring your swimsuit for your swimming time in Halong Bay.
Tips: For those whose want to go on a Halong Bay’s cruise, you must check the weather forecast beforehand as early September is still the stormy season (which has been started from late August) and chance of cruise cancellation is quite high. But for the rest of the month, weather is in its best condition.
- Average temperature: 28oC
- Average sea Temperature: 29oC
- Monthly rainfall: 328mm
- Average hours of sunshine per day: 6 hours
