Measurements:
°C
°F
Ha Long
84°F
NE 7 mph
Feels like: 92°F
Precip: 69%
World Resorts Vietnam Ha Long Weather

Ha Long Sea Water Temperature

Current Sea Water Temperature:
+91.2°F
Maximum Sea Water Temperature in July: 95.6°F
Minimum Sea Water Temperature in July: 87.0°F
Average water temperature in July: 90.9°F

Sea Water Temperature for the Last 10 Days:

July 16 91.2°F July 11 89.6°F
July 15 91.8°F July 10 89.6°F
July 14 91.2°F July 09 89.4°F
July 13 90.6°F July 08 89.2°F
July 12 89.6°F July 07 90.0°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 90.5°F. The maximum and minimum values were 89.2°F and 91.8°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Ha Long was 90.8°F. The maximum and minimum values were 88.2°F and 92.6°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 93.4 °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 +82
Cat Ba Island +86
Da Lat +66
Da Nang +84
Doc Let Beach +80
Ha Long +84
Ha Noi +86
Ho Chi Minh +82
Hoi An +84
Mui Ne +80
Nha Trang +78
Phan Rang +82
Phan Thiet +80
Phu Quoc +84
Vinpearl +80
24 Hours Weather Forecast
Ha Long
Local time: 01:36
17 jul, friday
0300 84°F
NE
7 mph
0600 84°F
NE
5 mph
0900 88°F
NE
5 mph
1200 92°F
NE
5 mph
1500 90°F
N
8 mph
1800 86°F
N
8 mph
2100 84°F
N
7 mph
18 jul, saturday
0000 84°F
N
5 mph