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

Do you want to swim in the sea in Boston 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 Boston for the next few days.

Temperature of the sea in Boston today

Currently, the sea water temperature in Boston is at most:

65°F

(or 1° lower than the seasonal norm)

Other useful information about today's weather:

  • Outside temperature: 67°F to 74°F
  • Partly Cloudy
  • The wind is blowing at 12.4mph
  • Wave height is 1.3ft on average, and 2.3ft at most, with a frequency of a wave every 10.1 seconds.
  • More details on the sea weather of Boston page

This report was generated on 12/07/2025

7 day sea water temperature forecast in Boston

Discover the weather forecast for the water temperature in Boston 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 12 July 2025

Partiellement nuageux

sea temperature:
65°F

Wave height: 0.7ft to 2.6ft

Outside temperature: 67°F to 74°F

Sunday 13 July 2025

Partiellement nuageux

sea temperature:
65°F

Wave height: 1ft to 2.3ft

Outside temperature: 65°F to 72°F

Monday 14 July 2025

Partiellement nuageux

sea temperature:
65°F

Wave height: 1ft to 1.6ft

Outside temperature: 67°F to 77°F

Tuesday 15 July 2025

Partiellement nuageux

sea temperature:
65°F

Wave height: 0.7ft to 1.3ft

Outside temperature: 70°F to 79°F

Wednesday 16 July 2025

Partiellement nuageux

sea temperature:
65°F

Wave height: 0.7ft to 2.3ft

Outside temperature: 68°F to 79°F

Thursday 17 July 2025

Ensoleillu00e9

sea temperature:
65°F

Wave height: 1ft to 2ft

Outside temperature: 72°F to 83°F

Friday 18 July 2025

Ensoleillu00e9

sea temperature:
65°F

Wave height: 1ft to 2ft

Outside temperature: 72°F to 79°F

Chart of water temperature variation over 7 days

History of water temperature in Boston

We record the water temperature daily in Boston In this way, we can provide you with the average sea temperature in Boston over the last 24 months and a more detailed chart for recent months.

Monthly sea temperature averages over 24 months

july 2025
Average water temperature: 64°F (61°F to 65°F)
june 2025
Average water temperature: 58°F (50°F to 63°F)
may 2025
Average water temperature: 49°F (43°F to 54°F)
april 2025
Average water temperature: 41°F (38°F to 47°F)
march 2025
Average water temperature: 37°F (34°F to 41°F)
february 2025
Average water temperature: 38°F (34°F to 40°F)
january 2025
Average water temperature: 41°F (36°F to 43°F)
december 2024
Average water temperature: 46°F (41°F to 49°F)
november 2024
Average water temperature: 51°F (47°F to 54°F)
october 2024
Average water temperature: 58°F (52°F to 61°F)
september 2024
Average water temperature: 62°F (58°F to 67°F)
august 2024
Average water temperature: 65°F (63°F to 67°F)
july 2024
Average water temperature: 64°F (59°F to 66°F)
june 2024
Average water temperature: 60°F (54°F to 63°F)
may 2024
Average water temperature: 50°F (43°F to 58°F)
april 2024
Average water temperature: 42°F (38°F to 45°F)
march 2024
Average water temperature: 38°F (36°F to 41°F)
february 2024
Average water temperature: 39°F (34°F to 40°F)
january 2024
Average water temperature: 42°F (36°F to 45°F)
december 2023
Average water temperature: 46°F (40°F to 50°F)
november 2023
Average water temperature: 53°F (49°F to 58°F)
october 2023
Average water temperature: 58°F (54°F to 63°F)
september 2023
Average water temperature: 65°F (59°F to 68°F)
august 2023
Average water temperature: 66°F (63°F to 69°F)

Variation of water temperature in Boston over the past 2 months

Warning:

The information provided on this page regarding the sea temperature in Boston is for informational purposes only. It is the surface temperature of the sea measured by satellite, based on data available at the time of consultation. These data may vary depending on several factors such as local weather conditions, tides, and other variables. We therefore recommend consulting additional local sources for updated information before making any decisions based on this data.

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