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Coldest beach in Massachusetts

222 coastal locations in Massachusetts ranked by year-round average sea temperature, coldest first. The state-wide average is 12.0°C. The coldest month is February at 3.8°C. Click any beach for its 30-day chart and 10-year history.

Coldest year-round

Gloucester

11.2°C annual mean

State-wide average

12.0°C

across 222 Massachusetts coastal locations

Coldest month

February

3.8°C state-wide average

What the water feels like in February

Water at this temperature is freezing cold, can cause pain and takes your breath away. Unless you are very experienced and are under strict supervision, swimming in this water for more than a few minutes can be very dangerous. Be careful, stay safe, and enjoy the rush of endorphins and exhilaration from a brief cold water swim.

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 coldest 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 Amelia Earhart Dam, Mystic River, Boston Harbor Massachusetts 11.5°C
2 Beverly Massachusetts 11.5°C
3 Boston Light, Boston Harbor Massachusetts 11.5°C
4 Charlestown, Charles River entrance, Boston Harbor, Massachusetts Massachusetts 11.5°C
5 Chelsea St. Bridge, Chelsea River, Boston Harbor Massachusetts 11.5°C
6 Crow Point, Hingham Harbor entrance, Massachusetts Massachusetts 11.5°C
7 Deer Island (south end), Boston Harbor, Massachusetts Massachusetts 11.5°C
8 Hull, Massachusetts Massachusetts 11.5°C
9 Lovell Island Massachusetts 11.5°C
10 Lynn, Lynn Harbor Massachusetts 11.5°C
11 Moon Head, Boston Harbor, Massachusetts Massachusetts 11.5°C
12 Nantasket Beach, Weir River, Massachusetts Massachusetts 11.5°C
13 Neponset, Neponset River, Boston Harbor, Massachusetts Massachusetts 11.5°C
14 Nut Island, Quincy Bay Massachusetts 11.5°C
15 Plum Island Sound (south end) Massachusetts 11.5°C
16 Rainsford Island Massachusetts 11.5°C
17 Salem, Salem Harbor Massachusetts 11.5°C
18 Sheep Island Massachusetts 11.5°C
19 Shipyard Point, Weymouth Fore River Massachusetts 11.5°C
20 Weymouth Back River Massachusetts 11.5°C
21 Weymouth Fore River Bridge, Massachusetts Massachusetts 11.5°C
22 Annisquam, Lobster Cove, Massachusetts Massachusetts 11.4°C
23 Beverly Cove Massachusetts 11.4°C
24 Boston Massachusetts 11.4°C
25 Carson Beach Massachusetts 11.4°C
Show 25 more ▸
26 Chelsea Massachusetts 11.4°C
27 Cohasset Massachusetts 11.4°C
28 Crane Beach Massachusetts 11.4°C
29 Essex Massachusetts 11.4°C
30 Hingham Massachusetts 11.4°C
31 Ipswich Massachusetts 11.4°C
32 Manchester by the Sea Massachusetts 11.4°C
33 Plum Island Massachusetts 11.4°C
34 Quincy Massachusetts 11.4°C
35 Salem Massachusetts 11.4°C
36 Singing Beach Massachusetts 11.4°C
37 South Boston Massachusetts 11.4°C
38 Weymouth Massachusetts 11.4°C
39 Wollaston Beach Massachusetts 11.4°C
40 Merrimacport, Merrimack River Massachusetts 11.2°C
41 Plum Island, Merrimack River Entrance, Merrimack River Massachusetts 11.2°C
42 Riverside, Merrimack River Massachusetts 11.2°C
43 Salisbury Point, Merrimack River Massachusetts 11.2°C
44 Tom Nevers Beach Massachusetts 11.2°C
45 Gloucester Massachusetts 11.2°C
46 Good Harbor Beach Massachusetts 11.2°C
47 Newburyport Massachusetts 11.2°C
48 Rockport Massachusetts 11.2°C
49 Salisbury Massachusetts 11.2°C
50 Wingaersheek Beach Massachusetts 11.2°C

Warmest 10 in Massachusetts for contrast

Same data flipped. The warmest year-round spots in the state.

# 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

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