Chelsea Water Temperature

(Today) 2024

17.8°C / 64°F

The water will feel medium. The water will feel a bit chilly in just bathers / swimming costume. If you plan on wearing a wetsuit 4/3mm should be thick enough.

*Live data from BOSTON 16 NM East of Boston, MA: 19.7°C / 67.5°F

Current weather

27°C / 81°F
(clear sky)
Partly cloudy
Wind
8 mph
Humidity
34%

The measurements for the water temperature in Chelsea, 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.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

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

Chelsea average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Chelsea
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3 2 1.6 3.4 6 11.1 16.3 18.4 16.1 11.6 9.1 5.3
Max °C 6.8 4.9 4.8 7.7 11.2 17.1 20.6 21 19.7 17.7 12.8 10.4
Min °F 38.9 36.7 36.2 39.8 44.9 54.4 63 66.2 62.4 55.3 49.8 43.5
Max °F 42.7 39.6 39.4 44.1 50.1 60.4 67.3 68.8 66 61.4 53.5 48.6

The warmest water temperature is in August with an average around 67.5°F / 19.7°C. The coldest month is March with an average water temperature of 37.8°F / 3.2°C.

7 day tide forecast for Chelsea

MonTueWedThuFriSatSun
  • Low 4:07am
    (-0.02m)
  • High 10:21am
    (2.99m)
  • Low 4:24pm
    (0.09m)
  • High 10:39pm
    (3.36m)
  • Low 4:57am
    (-0.17m)
  • High 11:10am
    (3.22m)
  • Low 5:16pm
    (-0.12m)
  • High 11:30pm
    (3.47m)
  • Low 5:44am
    (-0.28m)
  • High 11:57am
    (3.42m)
  • Low 6:07pm
    (-0.31m)
  • High 12:20am
    (3.51m)
  • Low 6:31am
    (-0.33m)
  • High 12:43pm
    (3.58m)
  • Low 6:56pm
    (-0.43m)
  • High 1:10am
    (3.49m)
  • Low 7:17am
    (-0.3m)
  • High 1:30pm
    (3.65m)
  • Low 7:47pm
    (-0.46m)
  • High 2:01am
    (3.39m)
  • Low 8:05am
    (-0.2m)
  • High 2:20pm
    (3.63m)
  • Low 8:40pm
    (-0.4m)
  • High 2:54am
    (3.25m)
  • Low 8:57am
    (-0.06m)
  • High 3:12pm
    (3.54m)
  • Low 9:35pm
    (-0.28m)
7 day tide times for Chelsea

*These tide times are estimates based on the nearest accurate location (Chelsea St. Bridge, Chelsea River, 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.