Sea temperature in Nantucket Island (Massachusetts) in the United States (USA) real-time sea temperature, 7-day forecast and historical data
Do you want to swim in the sea in Nantucket Island (Massachusetts) in the United States (USA) today? First, check if the sea temperature is appropriate for swimming with our data that is updated daily, and our water temperature forecast in Nantucket Island (Massachusetts) for the next few days.
Temperature of the sea in Nantucket Island (Massachusetts) today
Currently, the sea water temperature in Nantucket Island (Massachusetts) is at most:
40°F
(or 1° higher than the seasonal norm)
Other useful information about today's weather:
- Outside temperature: 43°F to 47°F
- Partly Cloudy
- The wind is blowing at 6.2mph
- Wave height is 3.3ft on average, and 3ft at most, with a frequency of a wave every 7.5 seconds.
- More details on the sea weather of Nantucket Island (Massachusetts) page
This report was generated on 27/03/2023
7 day sea water temperature forecast in Nantucket Island (Massachusetts)
Discover the weather forecast for the water temperature in Nantucket Island (Massachusetts) for the next 7 days below. You will also find the 7-day forecast for outside temperature and wave height. For more details, hour by hour, see the chart below the listing.
Monday 27 March 2023

sea temperature:
40°F
Wave height: 2.3ft to 5.2ft
Outside temperature: 43°F to 47°F
Tuesday 28 March 2023

sea temperature:
40°F
Wave height: 2.3ft to 3.9ft
Outside temperature: 40°F to 41°F
Wednesday 29 March 2023

sea temperature:
43°F
Wave height: 2ft to 3ft
Outside temperature: 34°F to 41°F
Thursday 30 March 2023

sea temperature:
43°F
Wave height: 2ft to 4.6ft
Outside temperature: 32°F to 43°F
Friday 31 March 2023

sea temperature:
40°F
Wave height: 2.3ft to 5.2ft
Outside temperature: 38°F to 45°F
Saturday 1 April 2023

sea temperature:
43°F
Wave height: 2ft to 8.9ft
Outside temperature: 47°F to 52°F
Sunday 2 April 2023

sea temperature:
40°F
Wave height: 6.9ft to 9.5ft
Outside temperature: 36°F to 49°F
Chart of water temperature variation over 7 days
History of water temperature in Nantucket Island (Massachusetts)
We record the water temperature daily in Nantucket Island (Massachusetts) In this way, we can provide you with the average sea temperature in Nantucket Island (Massachusetts) over the last 12 months and a more detailed chart for recent months.
Monthly sea temperature averages over 12 months
- march 2023
- Average water temperature: 39°F (38°F to 42°F)
- february 2023
- Average water temperature: 39°F (32°F to 43°F)
- january 2023
- Average water temperature: 41°F (41°F to 45°F)
- december 2022
- Average water temperature: 47°F (41°F to 49°F)
- november 2022
- Average water temperature: 56°F (46°F to 60°F)
- october 2022
- Average water temperature: 59°F (56°F to 66°F)
- september 2022
- Average water temperature: 68°F (61°F to 72°F)
- august 2022
- Average water temperature: 67°F (63°F to 70°F)
- july 2022
- Average water temperature: 65°F (61°F to 68°F)
- june 2022
- Average water temperature: 58°F (54°F to 61°F)
- may 2022
- Average water temperature: 51°F (49°F to 56°F)
- april 2022
- Average water temperature: 47°F (43°F to 50°F)