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Sea Temperature

Cruz Bay Sea Temperature

(Today) Dec 2017

28.3°C / 83°F

Current weather

(clear sky)
25°C / 77°F

Partly cloudy

5 mph



The measurements for the sea temperature in Cruz Bay, Saint John Island 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 Cruz Bay
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 25.6 25.2 25.4 25.7 26.3 27.4 27.7 28 28.5 28.3 28 26.6
Max °C 27.2 26.7 26.8 28.3 28.7 29.3 29.6 30.2 30.4 30 29.3 28.2
Min °F 78.7 77.9 78.3 79.3 80.3 82 82.6 83.3 84 83.6 82.9 80.5
Max °F 80.3 79.4 79.7 81.9 82.7 83.9 84.5 85.5 85.9 85.3 84.2 82.1

7 day tide forecast for Cruz Bay

  • High 08:19am
  • Low 12:18am
  • High 08:56am
  • Low 12:44am
  • High 09:31am
  • Low 01:11am
  • High 10:06am
  • Low 01:40am
  • High 10:41am
  • Low 02:10am
  • High 11:16am
  • Low 02:42am
  • High 11:50am

*These tide times are estimates based on the nearest port (Benner Bay, St. Thomas) 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: 26.6°C / 79.9°F
  • Avg: 27.4°C / 81.3°F
  • Min: 28.2°C / 82.8°F
Cruz Bay average sea temperature chart

These average ocean temperatures for Cruz Bay are calculated from several years of archived data.

Map showing location of Cruz Bay (18.331340, -64.793750)

Locations nearby


Whilst sea temperatures for Cruz Bay 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 Cruz Bay

Cruz Bay average sea temperature chart