Average sea water temperature in July:
+86.8°F
| Minimum sea water temperature in July: | 89.8°F |
| Maximum sea water temperature in July: | 83.1°F |
Daily sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 86.7°F. The highest and lowest sea temperatures during the month were 88.2°F and 84.9°F.
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| Cat Ba Island |
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| Cat Ba Island |
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| Cat Ba Island |
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| Cat Ba Island |
Monthly sea water temperature in Cat Ba Island, °F
Which Vietnam resorts have warmest sea in July?
| Place name | July 2026 | July 2025 |
|---|---|---|
| Hue | 87.5°F | 86.2°F |
| Tuan Chau | 86.9°F | 86.8°F |
| Ha Long | 86.9°F | 86.8°F |
| Thanh Hoa | 86.8°F | 87.1°F |
| Cat Ba Island | 86.7°F | 86.8°F |
| Hai Phong | 86.0°F | 85.9°F |
| Da Nang | 85.5°F | 85.5°F |
| Phu Quoc | 85.5°F | 84.3°F |
| Doc Let Beach | 85.2°F | 85.1°F |
| Hoi An | 84.9°F | 85.0°F |
| Ho Chi Minh | 84.5°F | 83.3°F |
| Con Dao | 84.5°F | 84.2°F |
| Vung Tau | 83.6°F | 82.2°F |
| Cam Ranh | 83.2°F | 84.1°F |
| Nha Trang | 83.1°F | 84.1°F |
| Vinpearl | 82.8°F | 83.8°F |
| Phan Rang | 81.7°F | 82.5°F |
| Ke Ga | 81.0°F | 80.3°F |
| Phan Thiet | 80.9°F | 80.4°F |
| Mui Ne | 80.5°F | 80.1°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: 18:27
August 26, wednesday
2100
82°F
E
12 mph
12 mph
August 27, thursday
0000
81°F
E
10 mph
10 mph
0300
81°F
E
10 mph
10 mph
0600
81°F
E
7 mph
7 mph
0900
82°F
SE
4 mph
4 mph
1200
86°F
NE
4 mph
4 mph
1500
84°F
N
5 mph
5 mph
1800
82°F
N
6 mph
6 mph
