Portsmouth Sea Temperature

(Today) 2021

28.3°C / 82.9°F

Current weather

30°C / 86°F
(few clouds)

Partly cloudy

Wind

7 mph

Humidity

64%


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 water temp

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.

Portsmouth average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Portsmouth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 26.7 26.3 26 26.7 26.4 27.4 27.6 27.8 28.4 28.2 27.5 26.7
Max °C 27.6 27.1 27.8 28.4 29.7 29.7 29.7 30.2 30.5 30 29.4 28.5
Min °F 80.4 79.7 79.5 80.7 80.8 82.2 82.5 83 83.9 83.5 82.2 80.8
Max °F 81.3 80.5 81.3 82.4 84.1 84.5 84.6 85.4 86 85.3 84.1 82.6

7 day tide forecast for Portsmouth

WedThuFriSatSunMonTue
  • Low 7:40am
    (0.35m)
  • High 3:39pm
    (0.6m)
  • Low 6:56pm
    (0.58m)
  • High 12:24am
    (0.66m)
  • Low 8:25am
    (0.33m)
  • High 4:07pm
    (0.61m)
  • Low 7:54pm
    (0.58m)
  • High 1:17am
    (0.67m)
  • Low 9:05am
    (0.31m)
  • High 4:33pm
    (0.62m)
  • Low 8:42pm
    (0.57m)
  • High 2:06am
    (0.68m)
  • Low 9:42am
    (0.3m)
  • High 4:59pm
    (0.63m)
  • Low 9:26pm
    (0.55m)
  • High 2:52am
    (0.69m)
  • Low 10:18am
    (0.3m)
  • High 5:24pm
    (0.64m)
  • Low 10:09pm
    (0.54m)
  • High 3:38am
    (0.68m)
  • Low 10:52am
    (0.31m)
  • High 5:48pm
    (0.64m)
  • Low 10:53pm
    (0.52m)
  • High 4:26am
    (0.68m)
  • Low 11:26am
    (0.34m)
  • High 6:12pm
    (0.65m)
  • Low 11:40pm
    (0.49m)
7 day tide times for Portsmouth

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