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Warmest beach in Massachusetts

222 coastal locations in Massachusetts ranked by year-round average sea temperature. The state-wide average is 12.0°C. The peak month is August at 20.8°C. Click any beach for its 30-day chart and 10-year history.

Warmest year-round

Fall River, Narragansett Bay

12.8°C annual mean

State-wide average

12.0°C

across 222 Massachusetts coastal locations

Warmest month

August

20.8°C state-wide average

What the water feels like at peak in August

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

Massachusetts monthly average 3.8°C to 20.8°C
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  • Warmest month August 20.8°C
  • Coldest month February 3.8°C
  • Annual mean 12.0°C
  • Months above 20°C 2 of 12

Month by month around the Massachusetts coast

Massachusetts sea temperatures swing from 3.8°C in February to 20.8°C in August on average across the coast. That's a spread of 17°C. Pick a single month for a focused ranking:

Massachusetts sea temperature map

Today's pin colours show the latest daily reading at every Massachusetts beach we track. Drag and zoom; click any pin for that beach's full page.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest beaches in Massachusetts

Sorted by year-round average. Click any beach for its 30-day chart, monthly profile, and 10-year history.

# Location Annual mean
1 Fall River, Narragansett Bay Massachusetts 12.8°C
2 Ocean Grove Massachusetts 12.8°C
3 Steep Brook, Taunton River, Narragansett Bay, Rhode Island Massachusetts 12.8°C
4 Westport Harbor, Westport River, Massachusetts Massachusetts 12.8°C
5 Clarks Point, New Bedford, Buzzards Bay Massachusetts 12.8°C
6 Marion Center Massachusetts 12.8°C
7 Marion, Sippican Harbor, Buzzards Bay, Massachusetts Massachusetts 12.8°C
8 Mattapoisett, Mattapoisett Harbor, Buzzards Bay, Massachusetts Massachusetts 12.8°C
9 New Bedford, Buzzards Bay, Massachusetts Massachusetts 12.8°C
10 Round Hill Point, Buzzards Bay Massachusetts 12.8°C
11 South Dartmouth Massachusetts 12.8°C
12 West Island Massachusetts 12.8°C
13 Cuttyhunk, Massachusetts Massachusetts 12.8°C
14 Gay Head, Martha's Vineyard, Massachusetts Massachusetts 12.8°C
15 Kettle Cove Massachusetts 12.8°C
16 Menemsha Bight Massachusetts 12.8°C
17 Menemsha Harbor Massachusetts 12.8°C
18 Nomans Land, Martha's Vineyard, Massachusetts Massachusetts 12.8°C
19 Penikese Island, Buzzards Bay Massachusetts 12.8°C
20 Quicks Hole, North side, Massachusetts Massachusetts 12.8°C
21 Squibnocket Point, Martha's Vineyard, Massachusetts Massachusetts 12.8°C
22 Tarpaulin Cove Massachusetts 12.8°C
23 Fall River Massachusetts 12.8°C
24 Horseneck Beach Massachusetts 12.8°C
25 Westport Massachusetts 12.8°C
Show 25 more ▸
26 Bliss Corner Massachusetts 12.7°C
27 Dartmouth Massachusetts 12.7°C
28 Fairhaven Massachusetts 12.7°C
29 Marion Massachusetts 12.7°C
30 Mattapoisett Massachusetts 12.7°C
31 New Bedford Massachusetts 12.7°C
32 Aquinnah Massachusetts 12.7°C
33 Abiels Ledge Massachusetts 12.7°C
34 Barlows Landing Massachusetts 12.7°C
35 Cape Cod Canal, RR. bridge, Buzzards Bay Massachusetts 12.7°C
36 Cape Cod Canal (Sta. 320), Bourne Bridge, Cape Cod Bay Massachusetts 12.7°C
37 Cedar Tree Neck, Martha's Vineyard, Massachusetts Massachusetts 12.7°C
38 Chapoquoit Point, West Falmouth Harbor, Buzzards Bay Massachusetts 12.7°C
39 East Chop Massachusetts 12.7°C
40 Falmouth Heights, Nantucket Sound, Massachusetts Massachusetts 12.7°C
41 Gray Gables, Buzzards Bay Massachusetts 12.7°C
42 Great Hill, Buzzards Bay Massachusetts 12.7°C
43 Great Hill Point Massachusetts 12.7°C
44 Little Harbor, Woods Hole, Massachusetts Massachusetts 12.7°C
45 Martha's Vineyard GPS buoy, Martha's Vineyard Massachusetts 12.7°C
46 Monument Beach, Buzzards Bay, Massachusetts Massachusetts 12.7°C
47 Nobska Beach Massachusetts 12.7°C
48 Oak Bluffs, Martha's Vineyard, Massachusetts Massachusetts 12.7°C
49 Piney Point, Buzzards Bay Massachusetts 12.7°C
50 South Beach (Martha's Vineyard) Massachusetts 12.7°C

Coldest 10 in Massachusetts

Same data, sorted the other way.

# Location Annual mean
1 Gloucester Massachusetts 11.2°C
2 Good Harbor Beach Massachusetts 11.2°C
3 Newburyport Massachusetts 11.2°C
4 Rockport Massachusetts 11.2°C
5 Salisbury Massachusetts 11.2°C
6 Wingaersheek Beach Massachusetts 11.2°C
7 Merrimacport, Merrimack River Massachusetts 11.2°C
8 Plum Island, Merrimack River Entrance, Merrimack River Massachusetts 11.2°C
9 Riverside, Merrimack River Massachusetts 11.2°C
10 Salisbury Point, Merrimack River Massachusetts 11.2°C

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