Long Island Sound Sea Temperature

(Today) 2021

6.9°C / 44.4°F

Current weather

7°C / 45°F
(clear sky)

Partly cloudy

Wind

5 mph

Humidity

87%


The measurements for the water temperature in Long Island Sound, New York 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 Long Island Sound water temperature derived from many years of historical sea surface temperature data.

Long Island Sound average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Long Island Sound
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.8 2.2 2.4 3.5 6.9 13.1 18.4 20.3 18.2 13.3 10.4 6.2
Max °C 7.4 5 5.3 9.1 13.3 19.4 22.8 23.5 21.3 19.2 13.9 11
Min °F 38.9 37.1 37.4 40.5 47 58.1 66.9 69.8 66 58.3 52.1 45.1
Max °F 43.5 39.9 40.3 46.1 53.4 64.4 71.3 73 69.1 64.2 55.6 49.9

7 day tide forecast for Long Island Sound

WedThuFriSatSunMonTue
  • High 1:10am
    (2.03m)
  • Low 7:32am
    (0.01m)
  • High 1:42pm
    (1.83m)
  • Low 7:35pm
    (0.2m)
  • High 1:46am
    (1.99m)
  • Low 8:09am
    (0.05m)
  • High 2:21pm
    (1.78m)
  • Low 8:13pm
    (0.26m)
  • High 2:23am
    (1.94m)
  • Low 8:48am
    (0.11m)
  • High 3:01pm
    (1.73m)
  • Low 8:53pm
    (0.32m)
  • High 3:03am
    (1.87m)
  • Low 9:31am
    (0.17m)
  • High 3:46pm
    (1.68m)
  • Low 9:39pm
    (0.37m)
  • High 3:48am
    (1.81m)
  • Low 10:20am
    (0.23m)
  • High 4:35pm
    (1.65m)
  • Low 10:31pm
    (0.41m)
  • High 4:40am
    (1.76m)
  • Low 11:14am
    (0.26m)
  • High 5:30pm
    (1.63m)
  • Low 11:29pm
    (0.42m)
  • High 5:39am
    (1.75m)
  • Low 12:13pm
    (0.27m)
  • High 6:27pm
    (1.66m)
7 day tide times for Long Island Sound

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