Long Island Sound Water Temperature

(Today) 2024

12.8°C / 55.1°F

The water will feel cool (fresh). Probably too cold for all but seasoned swimmers. We'd recommend a 4mm or 5mm wetsuit if you want to stay in the water.

Current weather

15°C / 59°F
(clear sky)
Partly cloudy
Wind
0 mph
Humidity
91%

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.

Water temp by month

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 2.3 2 2.7 3.7 7.6 13.9 19.1 20.9 19 14.3 11.1 6.9
Max °C 7.9 5.2 5.8 10.1 14.8 20.5 24.2 24.7 21.9 20.2 14.6 11.7
Min °F 38.4 36.9 38.1 41.2 48.6 59.7 68.4 71.1 67.3 60.1 53.3 46.3
Max °F 44 40.1 41.2 47.6 55.8 66.3 73.5 74.9 70.2 66 56.8 51.1

The warmest water temperature is in August with an average around 73°F / 22.8°C. The coldest month is February with an average water temperature of 38.5°F / 3.6°C.


7 day tide forecast for Long Island Sound

WedThuFriSatSunMonTue
  • Low 5:13am
    (0.06m)
  • High 11:22am
    (1.77m)
  • Low 5:14pm
    (0.27m)
  • High 11:27pm
    (2.05m)
  • Low 5:53am
    (0.02m)
  • High 12:03pm
    (1.79m)
  • Low 5:55pm
    (0.26m)
  • High 12:06am
    (2.06m)
  • Low 6:34am
    (0m)
  • High 12:44pm
    (1.81m)
  • Low 6:37pm
    (0.26m)
  • High 12:46am
    (2.07m)
  • Low 7:16am
    (-0.01m)
  • High 1:26pm
    (1.81m)
  • Low 7:20pm
    (0.27m)
  • High 1:29am
    (2.07m)
  • Low 8:01am
    (0m)
  • High 2:11pm
    (1.81m)
  • Low 8:07pm
    (0.27m)
  • High 2:16am
    (2.05m)
  • Low 8:49am
    (0.02m)
  • High 2:59pm
    (1.82m)
  • Low 8:59pm
    (0.27m)
  • High 3:08am
    (2.03m)
  • Low 9:40am
    (0.04m)
  • High 3:51pm
    (1.83m)
  • Low 9:55pm
    (0.27m)
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.