St. Catharines Sea Temperature

(Today) 2021

2.3°C / 36.1°F

Current weather

-0°C / 31°F
(overcast clouds)

Partly cloudy

Wind

26 mph

Humidity

74%


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

St. Catharines average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in St. Catharines
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.3 0.3 0.2 1.2 2.8 8.2 17.5 20.4 17.6 10 6.5 2.5
Max °C 3.5 2.5 2.7 5.2 9.1 20.7 25.2 24.3 22.7 18.7 11.4 7.3
Min °F 35.2 33.4 33.3 35.8 39.5 51.7 66.5 70.2 65.7 53.4 45.6 38.4
Max °F 37.4 35.6 35.8 39.8 45.8 64.2 74.2 74.1 70.8 62.1 50.5 43.2

7 day tide forecast for St. Catharines

SatSunMonTueWedThuFri
  • Low 5:05am
    (0.35m)
  • High 10:57am
    (5.59m)
  • Low 5:53pm
    (0.36m)
  • High 11:20pm
    (4.29m)
  • Low 6:06am
    (0.44m)
  • High 12:01pm
    (5.56m)
  • Low 6:54pm
    (0.31m)
  • High 12:29am
    (4.20m)
  • Low 7:06am
    (0.46m)
  • High 1:04pm
    (5.56m)
  • Low 7:52pm
    (0.20m)
  • High 1:34am
    (4.24m)
  • Low 8:05am
    (0.42m)
  • High 2:05pm
    (5.59m)
  • Low 8:48pm
    (0.08m)
  • High 2:35am
    (4.36m)
  • Low 9:01am
    (0.36m)
  • High 3:00pm
    (5.61m)
  • Low 9:40pm
    (-0.03m)
  • High 3:30am
    (4.53m)
  • Low 9:54am
    (0.30m)
  • High 3:51pm
    (5.59m)
  • Low 10:28pm
    (-0.10m)
  • High 4:19am
    (4.70m)
  • Low 10:44am
    (0.29m)
  • High 4:38pm
    (5.51m)
  • Low 11:14pm
    (-0.10m)
7 day tide times for St. Catharines

*These tide times are estimates based on the nearest port (Troy, Hudson River) and may differ by up to half and hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.