St. Catharines Water Temperature

(Today) 2021

7.5°C / 45.5°F

Current weather

-0°C / 31°F
(broken clouds)

Partly cloudy

Wind

7 mph

Humidity

69%


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

The warmest water temperature is in August with an average around 72.1°F / 22.3°C. The coldest month is February with an average water temperature of 34.5°F / 1.4°C.


7 day tide forecast for St. Catharines

TueWedThuFriSatSunMon
  • High 12:45am
    (1.43m)
  • Low 7:43am
    (0.01m)
  • High 1:30pm
    (1.55m)
  • Low 8:15pm
    (0.05m)
  • High 1:43am
    (1.41m)
  • Low 8:32am
    (-0.03m)
  • High 2:23pm
    (1.66m)
  • Low 9:09pm
    (-0.02m)
  • High 2:38am
    (1.41m)
  • Low 9:21am
    (-0.05m)
  • High 3:14pm
    (1.74m)
  • Low 10:01pm
    (-0.08m)
  • High 3:31am
    (1.4m)
  • Low 10:10am
    (-0.07m)
  • High 4:04pm
    (1.81m)
  • Low 10:52pm
    (-0.13m)
  • High 4:23am
    (1.39m)
  • Low 10:58am
    (-0.07m)
  • High 4:53pm
    (1.85m)
  • Low 11:42pm
    (-0.16m)
  • High 5:15am
    (1.39m)
  • Low 11:47am
    (-0.06m)
  • High 5:41pm
    (1.85m)
  • Low 12:33am
    (-0.17m)
  • High 6:06am
    (1.37m)
  • Low 12:38pm
    (-0.03m)
  • High 6:31pm
    (1.83m)
7 day tide times for St. Catharines

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