Port Jefferson Sea Temperature

(Today) 2021

1.3°C / 34.3°F

Current weather

7°C / 44°F
(few clouds)

Partly cloudy

Wind

18 mph

Humidity

31%


The measurements for the water temperature in Port Jefferson, 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 Port Jefferson water temperature derived from many years of historical sea surface temperature data.

Port Jefferson average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Port Jefferson
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3 2.6 3 3.8 7.8 14.3 19.9 21.4 19.2 14.7 11.3 7.1
Max °C 8.4 5.9 6.3 11.1 16 21.9 24.6 25.3 22.6 20.5 14.8 11.8
Min °F 39.6 38 38.7 41.7 49.3 60.8 69.7 72 67.9 60.8 53.7 46.6
Max °F 45 41.3 42 49 57.5 68.4 74.4 75.9 71.3 66.6 57.2 51.3

7 day tide forecast for Port Jefferson

ThuFriSatSunMonTueWed
  • Low 3:36am
    (0.22m)
  • High 9:47am
    (6.99m)
  • Low 4:12pm
    (-0.30m)
  • High 10:17pm
    (6.58m)
  • Low 4:22am
    (-0.16m)
  • High 10:32am
    (7.29m)
  • Low 4:54pm
    (-0.56m)
  • High 11:00pm
    (6.94m)
  • Low 5:08am
    (-0.48m)
  • High 11:17am
    (7.47m)
  • Low 5:36pm
    (-0.74m)
  • High 11:42pm
    (7.27m)
  • Low 5:53am
    (-0.72m)
  • High 12:01pm
    (7.52m)
  • Low 6:18pm
    (-0.81m)
  • High 12:25am
    (7.51m)
  • Low 6:40am
    (-0.83m)
  • High 12:47pm
    (7.42m)
  • Low 7:01pm
    (-0.76m)
  • High 1:11am
    (7.65m)
  • Low 7:29am
    (-0.81m)
  • High 1:36pm
    (7.19m)
  • Low 7:47pm
    (-0.60m)
  • High 1:59am
    (7.65m)
  • Low 8:21am
    (-0.67m)
  • High 2:27pm
    (6.86m)
  • Low 8:36pm
    (-0.33m)
7 day tide times for Port Jefferson

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