Sea Temperature

Saint John’s Sea Temperature

(Today) Dec 2018

27.2°C / 81°F

Current weather

26°C / 79°F
(few clouds)

Partly cloudy

17 mph



The measurements for the water temperature in Saint John’s, Saint John are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

Monthly average max / min water temperatures

The graph below shows the range of monthly Saint John’s water temperature derived from many years of historical sea surface temperature data.

Maximum and minimum monthly sea temperatures in Saint John’s
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 26.2 25.7 25.4 26.3 26.2 27.4 27.7 27.7 28.3 28.1 27.6 26.6
Max °C 27.3 26.8 27.5 28.1 29.3 29.5 29.6 30.3 30.4 29.8 29.2 28.2
Min °F 79.6 78.7 78.5 80.1 80.4 82.1 82.6 82.9 83.7 83.2 82.3 80.5
Max °F 80.7 79.8 80.6 81.9 83.5 84.2 84.5 85.5 85.8 84.9 83.9 82.1

7 day tide forecast for Saint John’s

  • Low 03:45am
  • High 11:40am
  • Low 06:39pm
  • High 09:49pm
  • Low 04:15am
  • High 11:48am
  • Low 07:20pm
  • High 12:47am
  • Low 04:39am
  • High 11:58am
  • Low 07:57pm
  • High 12:12pm
  • Low 08:34pm
  • High 12:32pm
  • Low 09:14pm
  • High 12:59pm
  • Low 09:55pm
  • High 01:35pm
  • Low 10:39pm

*These tide times are estimates based on the nearest port (St. Johns, Antigua) 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: 28.2°C / 82.8°F
  • Avg: 27.4°C / 81.3°F
  • Min: 26.6°C / 79.9°F
Saint John’s average sea temperature chart

These average ocean temperatures for Saint John’s are calculated from several years of archived data.

Map showing location of Saint John’s (17.116670, -61.850000)

Locations nearby


Whilst sea temperatures for Saint John’s 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 Saint John’s
Saint John, Saint John's, Saint John’s, Sent Dzonsas, Sent Džonsas, Sent Tzons, Sent-Dzhons, St Johns, St. John's, St.John.s, seinteujonseu, sentojonzu, sheng yue han, sheng yue han shi, snt g'wns, Σεντ Τζονς, Сент-Джонс, סנט ג'ונס, ሴንት ጆንስ፥ አንቲጋ እና ባርቡዳ, セントジョンズ, 圣约翰, 圣约翰市, 세인트존스

Saint John’s average sea temperature chart