Sea Temperature

Portsmouth Sea Temperature

(Today) Nov 2018

28.3°C / 83°F

Current weather

30°C / 86°F
(broken clouds)

Partly cloudy
Wind

10 mph

Humidity

70%


The measurements for the water temperature in Portsmouth, 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 Portsmouth water temperature derived from many years of historical sea surface temperature data.

Maximum and minimum monthly sea temperatures in Portsmouth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 26.6 26.3 26 26.7 26.4 27.3 27.6 27.8 28.4 28.1 27.5 26.7
Max °C 27.7 27.1 27.8 28.4 29.7 29.5 29.7 30.1 30.4 29.9 29.3 28.5
Min °F 80.3 79.7 79.5 80.7 80.8 82 82.5 82.9 83.9 83.3 82.2 80.8
Max °F 81.4 80.5 81.3 82.4 84.1 84.2 84.6 85.2 85.9 85.1 84 82.6

7 day tide forecast for Portsmouth

FriSatSunMonTueWedThu
  • Low 04:30am
    (0.39m)
  • High 10:42am
    (0.94m)
  • Low 04:36pm
    (0.60m)
  • High 10:17pm
    (1.05m)
  • Low 05:18am
    (0.40m)
  • High 11:27am
    (1.02m)
  • Low 05:40pm
    (0.50m)
  • High 11:29pm
    (1.05m)
  • Low 05:58am
    (0.40m)
  • High 12:04pm
    (1.11m)
  • Low 06:30pm
    (0.38m)
  • High 12:30am
    (1.06m)
  • Low 06:33am
    (0.40m)
  • High 12:39pm
    (1.20m)
  • Low 07:14pm
    (0.25m)
  • High 01:22am
    (1.08m)
  • Low 07:06am
    (0.40m)
  • High 01:12pm
    (1.30m)
  • Low 07:56pm
    (0.12m)
  • High 02:11am
    (1.09m)
  • Low 07:40am
    (0.40m)
  • High 01:46pm
    (1.39m)
  • Low 08:37pm
    (0.01m)
  • High 02:57am
    (1.08m)
  • Low 08:14am
    (0.40m)
  • High 02:21pm
    (1.47m)
  • Low 09:19pm
    (-0.08m)

*These tide times are estimates based on the nearest port (Roseau, Dominica) 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 November sea temperatures

  • Max: 29.3°C / 84.7°F
  • Avg: 28.4°C / 83.1°F
  • Min: 27.5°C / 81.5°F
Portsmouth average sea temperature chart

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

Map showing location of Portsmouth (15.583330, -61.466670)

Locations nearby

Variations

Whilst sea temperatures for Portsmouth 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 Portsmouth
Grand-Anse, Portsmouth

Portsmouth average sea temperature chart