Current Sea Water Temperature:
+78.6°F
| Maximum Sea Water Temperature in March: | 79.2°F |
| Minimum Sea Water Temperature in March: | 65.2°F |
| Average water temperature in March: | 71.8°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| March 30 | 78.6°F | March 25 | 77.4°F |
| March 29 | 78.8°F | March 24 | 77.4°F |
| March 28 | 79.2°F | March 23 | 76.2°F |
| March 27 | 78.2°F | March 22 | 75.6°F |
| March 26 | 78.0°F | March 21 | 75.6°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
The average sea surface temperature in July 2025 for Ha Long was 90.9°F. The maximum and minimum values were 88.6°F and 93.4°F respectively.
Sea Water Temperature in August
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
The average sea surface temperature in June 2025 for Ha Long was 89.4°F. The maximum and minimum values were 86.4°F and 91.0°F respectively.
Vietnam Resorts:
NAME
F°
| Cam Ranh |  |
+78 |
| Cat Ba Island |  |
+78 |
| Da Lat | |
+72 |
| Da Nang | |
+78 |
| Doc Let Beach | |
+80 |
| Ha Long | |
+78 |
| Ha Noi | |
+84 |
| Ho Chi Minh | |
+88 |
| Mui Ne | |
+80 |
| Nha Trang | |
+78 |
| Phan Rang | |
+78 |
| Phan Thiet | |
+80 |
| Phu Quoc | |
+86 |
| Vinpearl | |
+80 |
| Vung Tau | |
+84 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Ha Long
Local time: 17:51
30 mar, monday
| 1800 |  |
78°F | W 6 mph |
| 2100 |  |
76°F | W 4 mph |
31 mar, tuesday
| 0000 | |
78°F | W 1 mph |
| 0300 | |
76°F | W 3 mph |
| 0600 |  |
76°F | W 2 mph |
| 0900 |  |
82°F | N 4 mph |
| 1200 | |
86°F | N 7 mph |
| 1500 |  |
86°F | NW 6 mph |