Sea Temperature

Hạ Long Sea Temperature

(Today) Dec 2017

22.2°C / 72°F

Current weather

(light rain)
14°C / 57°F

Partly cloudy

9 mph



The measurements for the sea temperature in Hạ Long, Quảng Ninh are provided by the daily satellite readings provided by the NOAA. The temperatures given are the surface temperature (SST) which is most relevant to recreational users.

Monthly average max / min water temperatures

The graph below shows the range of monthly water temperatures over several years.

Maximum and minimum monthly sea temperatures in Hạ Long
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 17.9 17.4 17.6 18.8 24.1 27.7 29.3 29.1 27.1 24.7 23.2 18.9
Max °C 20.7 21.2 22.2 26 30.5 31 32.2 31.2 31.4 29.1 26.5 24.3
Min °F 65.3 64.8 65.5 68.7 77.9 83.1 85.9 85.2 82.5 78.2 75 68.2
Max °F 68.1 68.6 70.1 75.9 84.3 86.4 88.8 87.3 86.8 82.6 78.3 73.6

7 day tide forecast for Hạ Long

  • High 03:25am
  • Low 04:27pm
  • High 03:31am
  • Low 04:17pm
  • High 03:49am
  • Low 04:27pm
  • High 04:13am
  • Low 04:50pm
  • High 04:42am
  • Low 05:20pm
  • High 05:15am
  • Low 05:55pm
  • High 05:52am
  • Low 06:33pm

*These tide times are estimates based on the nearest port (Hongay, Vietnam) and may differ by up to half and hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.

Average December sea temperatures

  • Max: 18.9°C / 66°F
  • Avg: 21.6°C / 70.9°F
  • Min: 24.3°C / 75.7°F
Hạ Long average sea temperature chart

These average ocean temperatures for Hạ Long are calculated from several years of archived data.

Map showing location of Hạ Long (20.951110, 107.080000)

Locations nearby


Whilst sea temperatures for Hạ Long are as accurate as current data allows there may be slight local and regional variations depending on conditions. Time of day and wind direction may have a temporary local effect as can water flows from neraby rivers.

Alternate names for Hạ Long
Ha Long, Hon Cay, Hon Gai, Hon Gay, Hon Goi, Hong Gai, Honggay, Hạ Long, Hồng Gai, Khalong, xia long shi, Халонг, 下龙市

Hạ Long average sea temperature chart