Average sea water temperature in August:
+86.6°F
| Minimum sea water temperature in August: | 89.8°F |
| Maximum sea water temperature in August: | 82.8°F |
Daily sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 86.2°F. The highest and lowest sea temperatures during the month were 88.2°F and 84.6°F.
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| Cat Ba Island |
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| Cat Ba Island |
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Monthly sea water temperature in Cat Ba Island, °F
Which Vietnam resorts have warmest sea in August?
| Place name | August 2026 | August 2025 |
|---|---|---|
| Hue | 86.7°F | 86.5°F |
| Thanh Hoa | 86.7°F | 86.5°F |
| Da Nang | 86.5°F | 85.9°F |
| Ha Long | 86.4°F | 86.8°F |
| Cat Ba Island | 86.2°F | 86.7°F |
| Tuan Chau | 86.1°F | 86.7°F |
| Hoi An | 86.1°F | 85.4°F |
| Doc Let Beach | 86.0°F | 85.0°F |
| Hai Phong | 85.4°F | 86.1°F |
| Nha Trang | 85.2°F | 83.9°F |
| Con Dao | 85.0°F | 84.7°F |
| Vinpearl | 84.7°F | 83.6°F |
| Phu Quoc | 84.5°F | 85.1°F |
| Cam Ranh | 84.3°F | 83.7°F |
| Ho Chi Minh | 83.8°F | 83.2°F |
| Vung Tau | 83.3°F | 82.7°F |
| Phan Rang | 81.9°F | 82.1°F |
| Ke Ga | 81.2°F | 81.0°F |
| Phan Thiet | 80.3°F | 80.5°F |
| Mui Ne | 80.2°F | 80.4°F |
Best time for vacation in Cat Ba Island
Cat Ba Island on a weather map
Places in Vietnam:
Name
°F
24 Hours Forecast
Cat Ba Island
Local time: 08:19
September 16, wednesday
0900
77°F
W
11 mph
11 mph
1200
77°F
SW
11 mph
11 mph
1500
77°F
SW
11 mph
11 mph
1800
79°F
SW
11 mph
11 mph
2100
79°F
SW
8 mph
8 mph
September 17, thursday
0000
77°F
SW
7 mph
7 mph
0300
77°F
SW
7 mph
7 mph
0600
75°F
W
4 mph
4 mph
