Usually average temperatures are Ha Long Bay right through the month of September is 26. Average high degrees are usually 31 with low average temperatures being 24.
| Month | Degrees Celsius |
|---|---|
| Temperature | 26 |
| High Temperature | 31 |
| Low Temperature | 24 |
| Sunshine Per Day | 8 |
Useful Links: Ha Long Bay Weather: Average Weather & Yearly Climate