In August warmest sea in Vietnam is usually observed in the following locations: Ha Long, Tuan Chau, Cat Ba Island.
Table below shows the average sea water temperature for marine resorts of Vietnam in August for the last three years.
| Place name | August 2025 | August 2024 | August 2023 |
|---|---|---|---|
| Ha Long | 86.8°F | 87.4°F | 87.3°F |
| Tuan Chau | 86.7°F | 87.1°F | 87.3°F |
| Cat Ba Island | 86.7°F | 87.2°F | 87.2°F |
| Hue | 86.5°F | 87.6°F | 87.3°F |
| Thanh Hoa | 86.5°F | 87.6°F | 87.0°F |
| Hai Phong | 86.1°F | 86.0°F | 86.3°F |
| Da Nang | 85.9°F | 86.4°F | 86.3°F |
| Hoi An | 85.4°F | 85.7°F | 85.8°F |
| Phu Quoc | 85.1°F | 85.3°F | 84.8°F |
| Doc Let Beach | 85.0°F | 85.8°F | 85.8°F |
| Con Dao | 84.7°F | 85.8°F | 84.5°F |
| Nha Trang | 83.9°F | 84.1°F | 84.2°F |
| Cam Ranh | 83.7°F | 84.7°F | 84.1°F |
| Vinpearl | 83.6°F | 83.7°F | 83.8°F |
| Ho Chi Minh | 83.2°F | 84.6°F | 84.3°F |
| Vung Tau | 82.7°F | 84.6°F | 83.7°F |
| Phan Rang | 82.1°F | 82.8°F | 81.6°F |
| Ke Ga | 81.0°F | 83.6°F | 80.7°F |
| Phan Thiet | 80.5°F | 83.0°F | 79.8°F |
| Mui Ne | 80.4°F | 83.1°F | 79.6°F |
Charts below show average sea water temperature for Vietnam resorts with the warmest sea in August.
You can also check other months of the year to see sea temperature of Vietnam resorts at that time.
Places in Vietnam:
Name
°F
