Saint John Water Temperature

(Today) 2023

8.2°C / 46.8°F

The water will feel cold. All but the most ardent watersports enthusiasts will be thinking of packing up for the winter. If not we'd suggest a thick 5/4mm wetsuit along with some boots and a hood.

Current weather

0°C / 33°F
(broken clouds)
Partly cloudy
Wind
6 mph
Humidity
100%

The measurements for the water temperature in Saint John, New Brunswick 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.

Water temp by month

Monthly average max / min water temperatures

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

Saint John average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Saint John
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.6 1.4 1.4 2.3 4.2 7.1 10.5 11.8 10.9 8.7 6.5 3.6
Max °C 5.9 3.9 3.3 5.4 8.5 12 14.7 14.9 14 12.1 9.6 7.8
Min °F 36.6 35.5 35.2 37.3 41.2 46.7 52.6 54.4 52.8 49 44.9 40.2
Max °F 40.9 38 37.1 40.4 45.5 51.6 56.8 57.5 55.9 52.4 48 44.4

The warmest water temperature is in August with an average around 55.9°F / 13.3°C. The coldest month is March with an average water temperature of 36.1°F / 2.3°C.

7 day tide forecast for Saint John

SunMonTueWedThuFriSat
  • Low 3:10am
    (1.81m)
  • High 9:20am
    (7.43m)
  • Low 3:43pm
    (1.4m)
  • High 9:50pm
    (7.06m)
  • Low 3:57am
    (1.71m)
  • High 10:05am
    (7.59m)
  • Low 4:28pm
    (1.21m)
  • High 10:36pm
    (7.17m)
  • Low 4:42am
    (1.62m)
  • High 10:49am
    (7.72m)
  • Low 5:14pm
    (1.06m)
  • High 11:21pm
    (7.25m)
  • Low 5:28am
    (1.55m)
  • High 11:34am
    (7.8m)
  • Low 6:00pm
    (0.97m)
  • High 12:07am
    (7.3m)
  • Low 6:15am
    (1.51m)
  • High 12:21pm
    (7.82m)
  • Low 6:47pm
    (0.93m)
  • High 12:55am
    (7.31m)
  • Low 7:04am
    (1.5m)
  • High 1:09pm
    (7.79m)
  • Low 7:36pm
    (0.94m)
  • High 1:46am
    (7.3m)
  • Low 7:55am
    (1.53m)
  • High 2:01pm
    (7.71m)
  • Low 8:28pm
    (1m)
7 day tide times for Saint John

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