Measurements:
°C
°F
Ha Long
90°F
S 1 mph
Feels like: 102°F
Precip: 55%
World Resorts Vietnam Ha Long Weather

Ha Long Sea Water Temperature

Current Sea Water Temperature:
+89.6°F
Maximum Sea Water Temperature in August: 93.4°F
Minimum Sea Water Temperature in August: 86.2°F
Average water temperature in August: 90.7°F

Sea Water Temperature for the Last 10 Days:

August 25 89.6°F August 20 91.0°F
August 24 90.0°F August 19 92.0°F
August 23 90.4°F August 18 92.2°F
August 22 90.8°F August 17 91.6°F
August 21 91.4°F August 16 91.4°F

When is the Warmest Sea for Ha Long?

According to our data for the last three years for Ha Long the highest average sea water temperature was in July, August and June.

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Ha Long was 91.0°F. The maximum and minimum values were 89.2°F and 92.8°F respectively.

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Ha Long was 90.7°F. The maximum and minimum values were 89.2°F and 92.2°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Ha Long was 92.1°F. The maximum and minimum values were 90.4°F and 93.6°F respectively.

Best Time to Visit Ha Long
The most sunny months:
October 13 days
September 12 days
August 11 days
The most warm months:
July 93.1 °F
August 92.8 °F
June 92.6 °F
Warmest sea temperature:
July 90.9 °F
August 90.7 °F
June 90.4 °F
The most cold months:
January 69.1 °F
February 70.7 °F
December 71.6 °F
The most rainy months:
July 14 days
August 14 days
June 11 days
The most windy months:
June 9 mph
July 9 mph
October 9 mph

Ha Long on the Weather Map

Vietnam Resorts:
NAME
Cam Ranh +94
Da Lat +70
Da Nang +96
Doc Let Beach +92
Ha Long +90
Ha Noi +84
Ho Chi Minh +94
Hoi An +96
Mui Ne +90
Nha Trang +92
Phan Rang +94
Phan Thiet +90
Phu Quoc +86
Vinpearl +92
Vung Tau +88
24 Hours Weather Forecast
Ha Long
Local time: 09:52
26 aug, wednesday
1200 88°F
NE
2 mph
1500 92°F
E
4 mph
1800 86°F
E
2 mph
2100 84°F
E
2 mph
27 aug, thursday
0000 80°F
SE
3 mph
0300 80°F
SE
2 mph
0600 80°F
SE
3 mph
0900 84°F
NE
3 mph