World Resorts Vietnam Cat Ba Island Weather

Cat Ba Island Sea Temperature in July

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:
2025
2024
2023

The average sea water temperature in July of 2025 was 86.8°F. The highest and lowest sea temperatures during the month were 88.7°F and 84.7°F.

Monthly sea water temperature in Cat Ba Island, °F

Which Vietnam resorts have warmest sea in July?

Place name July 2025 July 2024
Thanh Hoa 87.1°F 87.5°F
Ha Long 86.8°F 87.6°F
Cat Ba Island 86.8°F 87.4°F
Tuan Chau 86.8°F 87.5°F
Hue 86.2°F 86.4°F
Hai Phong 85.9°F 86.5°F
Da Nang 85.5°F 84.4°F
Doc Let Beach 85.1°F 84.8°F
Hoi An 85.0°F 84.0°F
Phu Quoc 84.3°F 85.0°F
Con Dao 84.2°F 85.1°F
Nha Trang 84.1°F 83.8°F
Cam Ranh 84.1°F 83.9°F
Vinpearl 83.8°F 83.5°F
Ho Chi Minh 83.3°F 84.7°F
Phan Rang 82.5°F 83.6°F
Vung Tau 82.2°F 84.8°F
Phan Thiet 80.4°F 83.3°F
Ke Ga 80.3°F 83.6°F
Mui Ne 80.1°F 83.0°F

Best time for vacation in Cat Ba Island

Sunniest months:
October 14 days
June 12 days
September 12 days
Warmest months:
August 88.9 °F
July 88.9 °F
June 88.2 °F
Warmest sea temp:
July 86.8 °F
August 86.6 °F
June 86.3 °F
Coldest months:
January 66.9 °F
February 68.2 °F
December 69.3 °F
Rainiest months:
July 15 days
August 14 days
June 12 days
Windiest months:
June 10.6 mph
July 10.1 mph
January 9.8 mph

Cat Ba Island on a weather map

Cat Ba Island
+70°F
SW 14 mph
Feels like: +70°F
Precip.: 0%
Places in Vietnam:
Name
°F
+79°F
+84°F
+73°F
+75°F
+77°F
+77°F
+70°F
+82°F
+79°F
+77°F
+82°F
+84°F
+66°F
+68°F
+86°F
24 Hours Forecast
Cat Ba Island
Local time: 12:20
December 05, friday
1500
70°F
W
12 mph
1800
68°F
W
12 mph
2100
68°F
SW
8 mph
December 06, saturday
0000
66°F
SW
6 mph
0300
66°F
SW
7 mph
0600
66°F
SW
8 mph
0900
68°F
W
11 mph
1200
70°F
W
11 mph
Units of measurement: °C / °F