Onset Water Temperature

(Today) 2022

15.3°C / 59.5°F

Current weather

16°C / 61°F
(mist)

Partly cloudy

Wind

9 mph

Humidity

92%


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 water temp

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.

Onset average maximum / minimum water temperatures
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

The warmest water temperature is in August with an average around 68.4°F / 20.2°C. The coldest month is February with an average water temperature of 38.1°F / 3.4°C.


7 day tide forecast for Onset

SunMonTueWedThuFriSat
  • Low 2:58am
    (0.09m)
  • High 8:40am
    (1.06m)
  • Low 2:20pm
    (0.07m)
  • High 8:58pm
    (1.27m)
  • Low 3:32am
    (0.07m)
  • High 9:20am
    (1.05m)
  • Low 3:00pm
    (0.06m)
  • High 9:35pm
    (1.23m)
  • Low 4:08am
    (0.07m)
  • High 9:59am
    (1.03m)
  • Low 3:41pm
    (0.07m)
  • High 10:12pm
    (1.19m)
  • Low 4:46am
    (0.08m)
  • High 10:38am
    (1m)
  • Low 4:24pm
    (0.09m)
  • High 10:48pm
    (1.13m)
  • Low 5:24am
    (0.11m)
  • High 11:18am
    (0.96m)
  • Low 5:06pm
    (0.12m)
  • High 11:25pm
    (1.07m)
  • Low 6:03am
    (0.14m)
  • High 12:00pm
    (0.93m)
  • Low 5:48pm
    (0.15m)
  • High 12:05am
    (1.02m)
  • Low 6:43am
    (0.17m)
  • High 12:43pm
    (0.91m)
  • Low 6:32pm
    (0.19m)
7 day tide times for Onset

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