The Vietnam resorts with the warmest sea water temperature at this moment are Thanh Hoa, Cat Ba Island and Ha Long.
Below you can see a list of all popular Vietnam resorts and information about current sea water temperature and averages for current and next months.
| Resort Name | Current Sea Water Temperature |
August 2025 | September 2025 |
|---|---|---|---|
| Thanh Hoa | 92.4°F | 90.5°F | 89.9°F |
| Cat Ba Island | 92.2°F | 90.8°F | 89.7°F |
| Ha Long | 92.0°F | 90.8°F | 89.6°F |
| Tuan Chau | 91.8°F | 90.8°F | 89.3°F |
| Hue | 90.8°F | 90.6°F | 89.8°F |
| Hai Phong | 90.8°F | 90.2°F | 88.3°F |
| Da Nang | 90.6°F | 89.9°F | 88.9°F |
| Hoi An | 90.0°F | 89.3°F | 88.9°F |
| Nha Trang | 89.4°F | 87.6°F | 89.1°F |
| Vinpearl | 89.2°F | 87.3°F | 88.9°F |
| Doc Let Beach | 89.2°F | 88.9°F | 89.4°F |
| Cam Ranh | 88.6°F | 87.5°F | 88.8°F |
| Con Dao | 88.2°F | 88.6°F | 87.7°F |
| Phu Quoc | 87.4°F | 89.0°F | 87.7°F |
| Ho Chi Minh | 86.6°F | 86.8°F | 87.5°F |
| Vung Tau | 86.2°F | 86.3°F | 87.3°F |
| Phan Rang | 86.0°F | 85.6°F | 87.8°F |
| Ke Ga | 84.0°F | 84.5°F | 86.0°F |
| Phan Thiet | 83.6°F | 83.9°F | 85.7°F |
| Mui Ne | 83.4°F | 83.8°F | 85.7°F |
Please see following sea water temperature averages charts for the warmest Vietnam resorts for more details.
You can also get the same information for the every other month of the year when the average sea water temperature is greater then 70°F.
Vietnam Resorts:
NAME
F°
| Cam Ranh |  |
+84 |
| Da Lat | |
+64 |
| Da Nang |  |
+80 |
| Doc Let Beach | |
+84 |
| Ha Long | |
+82 |
| Ha Noi | |
+82 |
| Ho Chi Minh | |
+84 |
| Hoi An | |
+80 |
| Mui Ne | |
+76 |
| Nha Trang | |
+84 |
| Phan Rang | |
+84 |
| Phan Thiet | |
+76 |
| Phu Quoc | |
+84 |
| Vinpearl | |
+84 |
| Vung Tau | |
+78 |
