World Resorts Vietnam Ha Long Weather

Ha Long sea water temperature

Current sea water temperature:
+69.8°F
Minimum sea water temperature in January: 73.2°F
Maximum sea water temperature in January: 62.4°F
Average sea water temperature in January: 66.9°F

Sea water temperature for the last 10 days:

December 31 69.8°F December 26 71.8°F
December 30 69.8°F December 25 72.1°F
December 29 69.8°F December 24 73.2°F
December 28 70.2°F December 23 73.0°F
December 27 70.2°F December 22 72.3°F

When is the warmest sea in Ha Long?

Based on the data about daily sea water temperature for the last three years the warmest sea in Ha Long was noticed in July, August and June.

Monthly Sea Temperatures in Ha Long, °F

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 89.1°F and 84.7°F.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 86.8°F. The highest and lowest sea temperatures during the month were 88.3°F and 84.4°F.

Sea water temperature in June, °F

Show year:
2025
2024
2023

The average sea water temperature in June of 2025 was 85.4°F. The highest and lowest sea temperatures during the month were 86.9°F and 82.8°F.

Best time for vacation in Ha Long

Sunniest months:
October 13 days
June 12 days
September 12 days
Warmest months:
July 89.0 °F
August 88.5 °F
June 88.5 °F
Warmest sea temp:
July 86.8 °F
August 86.7 °F
June 86.3 °F
Coldest months:
January 67.2 °F
February 68.5 °F
December 69.5 °F
Rainiest months:
July 14 days
August 14 days
June 11 days
Windiest months:
June 10.1 mph
July 9.6 mph
October 9.3 mph

Ha Long on a weather map

Ha Long
+66°F
W 7 mph
Feels like: +66°F
Precip.: 0%
Places in Vietnam:
Name
°F
+66°F
+68°F
+57°F
+66°F
+66°F
+66°F
+68°F
+68°F
+66°F
+66°F
+68°F
+75°F
+66°F
+66°F
+72°F
24 Hours Forecast
Ha Long
Local time: 04:50
January 01, thursday
0600
66°F
W
7 mph
0900
70°F
W
7 mph
1200
73°F
W
9 mph
1500
72°F
W
10 mph
1800
66°F
SW
7 mph
2100
66°F
SW
9 mph
January 02, friday
0000
64°F
SW
11 mph
0300
64°F
SW
11 mph
Units of measurement: °C / °F