Sea temperature in Nantucket Island (Massachusetts) in the United States (USA) real-time sea temperature, 7-day forecast and historical data

Temperature of the sea in Nantucket Island (Massachusetts) today

Currently, the sea water temperature in Nantucket Island (Massachusetts) is at most:

50°F

(or 6° higher than the seasonal norm)

Other useful information about today's weather:

• Outside temperature: 52°F to 56°F
• Light rain
• The wind is blowing at 31.7mph
• Wave height is 6.9ft on average, and 6.6ft at most, with a frequency of a wave every 8.7 seconds.
• More details on the sea weather of Nantucket Island (Massachusetts) page

This report was generated on 26/04/2025

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.

Saturday 26 April 2025

sea temperature:
50°F

Wave height: 3ft to 8.5ft

Outside temperature: 52°F to 56°F

Sunday 27 April 2025

sea temperature:
47°F

Wave height: 5.9ft to 7.5ft

Outside temperature: 47°F to 52°F

Monday 28 April 2025

sea temperature:
47°F

Wave height: 2.6ft to 5.6ft

Outside temperature: 47°F to 54°F

Tuesday 29 April 2025

sea temperature:
47°F

Wave height: 2.6ft to 6.2ft

Outside temperature: 47°F to 54°F

Wednesday 30 April 2025

sea temperature:
47°F

Wave height: 3.6ft to 7.5ft

Outside temperature: 47°F to 56°F

Thursday 1 May 2025

sea temperature:
47°F to 50°F

Wave height: 2.3ft to 3.3ft

Outside temperature: 50°F to 52°F

Friday 2 May 2025

sea temperature:
50°F

Wave height: 3ft to 5.6ft

Outside temperature: 52°F to 54°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 24 months and a more detailed chart for recent months.

Monthly sea temperature averages over 24 months

april 2025

Average water temperature: 44°F (41°F to 50°F)

march 2025

Average water temperature: 39°F (34°F to 45°F)

february 2025

Average water temperature: 34°F (32°F to 36°F)

january 2025

Average water temperature: 37°F (32°F to 42°F)

december 2024

Average water temperature: 44°F (40°F to 49°F)

november 2024

Average water temperature: 52°F (49°F to 56°F)

october 2024

Average water temperature: 60°F (54°F to 64°F)

september 2024

Average water temperature: 68°F (59°F to 72°F)

august 2024

Average water temperature: 72°F (68°F to 76°F)

july 2024

Average water temperature: 71°F (61°F to 76°F)

june 2024

Average water temperature: 62°F (58°F to 71°F)

may 2024

Average water temperature: 52°F (47°F to 56°F)

april 2024

Average water temperature: 43°F (40°F to 49°F)

march 2024

Average water temperature: 40°F (36°F to 43°F)

february 2024

Average water temperature: 37°F (34°F to 40°F)

january 2024

Average water temperature: 41°F (36°F to 45°F)

december 2023

Average water temperature: 45°F (41°F to 49°F)

november 2023

Average water temperature: 52°F (45°F to 60°F)

october 2023

Average water temperature: 60°F (56°F to 65°F)

september 2023

Average water temperature: 69°F (58°F to 74°F)

august 2023

Average water temperature: 72°F (68°F to 75°F)

july 2023

Average water temperature: 69°F (65°F to 76°F)

june 2023

Average water temperature: 60°F (56°F to 65°F)

may 2023

Average water temperature: 53°F (49°F to 59°F)

Variation of water temperature in Nantucket Island (Massachusetts) over the past 2 months