Sea Temperature

Onset Sea Temperature

(Today) Oct 2019

14.1°C / 57.3°F

Current weather

15°C / 59°F
(clear sky)

Partly cloudy
Wind

9 mph

Humidity

44%


The measurements for the water temperature in Onset, Massachusetts 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 max / min water temperatures

The graph below shows the range of monthly Onset water temperature derived from many years of historical sea surface temperature data.

Maximum and minimum monthly sea temperatures in Onset
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.9 2 1.6 3.6 7.1 11 16.1 18.5 17.2 12.7 9.6 5.1
Max °C 7.4 4.9 5.7 9.7 13.3 18.6 21.9 21.9 20.3 18.9 13.9 11.4
Min °F 39 36.7 36.5 40.9 47.3 54.8 63.3 66.7 64.2 57.3 51 43.7
Max °F 43.5 39.6 40.6 47 53.5 62.4 69.1 70.1 67.3 63.5 55.3 50

7 day tide forecast for Onset

TueWedThuFriSatSunMon
  • Low 3:38am
    (0.50m)
  • High 10:41am
    (3.99m)
  • Low 5:27pm
    (0.31m)
  • High 10:53pm
    (3.53m)
  • Low 4:06am
    (0.52m)
  • High 11:13am
    (4.02m)
  • Low 6:16pm
    (0.37m)
  • High 11:28pm
    (3.44m)
  • Low 4:38am
    (0.57m)
  • High 11:48am
    (4.03m)
  • Low 7:19pm
    (0.43m)
  • High 12:08am
    (3.33m)
  • Low 5:14am
    (0.65m)
  • High 12:29pm
    (4.02m)
  • Low 8:23pm
    (0.47m)
  • High 12:52am
    (3.23m)
  • Low 5:57am
    (0.75m)
  • High 1:16pm
    (3.98m)
  • Low 9:23pm
    (0.44m)
  • High 1:42am
    (3.17m)
  • Low 6:49am
    (0.88m)
  • High 2:08pm
    (3.94m)
  • Low 10:20pm
    (0.35m)
  • High 2:37am
    (3.16m)
  • Low 8:06am
    (0.98m)
  • High 9:16am
    (1.00m)
  • Low 10:20am
    (0.98m)
  • High 3:07pm
    (3.92m)
  • Low 11:14pm
    (0.21m)

*These tide times are estimates based on the nearest port (Cape Cod Canal, Buzzards Bay Entrance) and may differ by up to half and hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.

Average October sea temperatures

  • Max: 18.9°C / 66°F
  • Avg: 15.8°C / 60.4°F
  • Min: 12.7°C / 54.9°F
Onset average sea temperature chart

These average ocean temperatures for Onset are calculated from several years of archived data.

Map showing location of Onset (41.741770, -70.657810)

Locations nearby

Variations

Whilst sea temperatures for Onset are as accurate as current data allows, there may be slight local and regional variations depending on conditions. Time of day and wind direction may have a temporary local effect as can water flows from neraby rivers.

Alternate names for Onset

Onset average sea temperature chart