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Coldest beach in Massachusetts in December

222 coastal locations in Massachusetts ranked by their typical December sea temperature. State-wide average in December: 8.0°C.

Coldest in December

Barnstable Harbor, Beach Point, Cape Cod Bay, Massachusetts

6.7°C

State December average

8.0°C

across 222 coastal locations in Massachusetts

Vs annual mean

-4.0°C

below the year-round state average

What the Massachusetts water feels like in December

This water is very cold and can cause pain. We don't recommend you swim in this temperature for anything other than very short swims of 5 to 10 minutes unless you are a very experienced cold water swimmer.

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

Where December fits in the year

December sits inside the state pattern shown on the left. Browse a different month for a fresh ranking.

Massachusetts sea temperature map (live)

Today's reading at every Massachusetts beach we track. The list below uses the typical December mean from a decade of daily history.

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 Massachusetts beaches in December

Sorted by typical December mean. Click any beach for the full location page.

# Location December mean
1 Bass River Massachusetts 7.6°C
2 Dennis Port Massachusetts 7.6°C
3 East Dennis Massachusetts 7.6°C
4 Grays Beach Massachusetts 7.6°C
5 Harwich Port Massachusetts 7.6°C
6 Mayflower Beach Massachusetts 7.6°C
7 Sea Gull Beach Massachusetts 7.6°C
8 South Yarmouth Massachusetts 7.6°C
9 West Dennis Massachusetts 7.6°C
10 West Yarmouth Massachusetts 7.6°C
11 Siasconset Massachusetts 7.5°C
12 Wauwinet Massachusetts 7.5°C
13 Aquinnah Massachusetts 7.5°C
14 Clarks Point, New Bedford, Buzzards Bay Massachusetts 7.3°C
15 Marion Center Massachusetts 7.3°C
16 Marion, Sippican Harbor, Buzzards Bay, Massachusetts Massachusetts 7.3°C
17 Mattapoisett, Mattapoisett Harbor, Buzzards Bay, Massachusetts Massachusetts 7.3°C
18 New Bedford, Buzzards Bay, Massachusetts Massachusetts 7.3°C
19 Round Hill Point, Buzzards Bay Massachusetts 7.3°C
20 South Dartmouth Massachusetts 7.3°C
21 West Island Massachusetts 7.3°C
22 Cape Poge Massachusetts 7.2°C
23 Muskeget Island, north side, Nantucket Island, Massachusetts Massachusetts 7.2°C
24 Tuckernuck Island Massachusetts 7.2°C
25 Wasque Point, Chappaquiddick Island, Martha's Vineyard, Massachusetts Massachusetts 7.2°C
Show 25 more ▸
26 Barnstable Massachusetts 7.2°C
27 Cape Cod Massachusetts 7.2°C
28 Centerville Massachusetts 7.2°C
29 Cotuit Massachusetts 7.2°C
30 Craigville Beach Massachusetts 7.2°C
31 Hyannis Massachusetts 7.2°C
32 Kalmus Beach Massachusetts 7.2°C
33 Mashpee Massachusetts 7.2°C
34 New Seabury Massachusetts 7.2°C
35 Osterville Massachusetts 7.2°C
36 Popponesset Massachusetts 7.2°C
37 Sandy Neck Beach Massachusetts 7.2°C
38 Eel Point, Nantucket Island, Massachusetts Massachusetts 7.1°C
39 Great Point, Nantucket Island, Massachusetts Massachusetts 7.1°C
40 Nantucket, Nantucket Island, Nantucket Island Massachusetts 7.1°C
41 Dennisport, Nantucket Sound, Massachusetts Massachusetts 7.1°C
42 Monomoy Point Massachusetts 7.1°C
43 Saquatucket Harbor, Nantucket Sound Massachusetts 7.1°C
44 Wychmere Harbor, Nantucket Sound, Massachusetts Massachusetts 7.1°C
45 Nantucket Massachusetts 7.0°C
46 Barnstable Harbor, Beach Point, Cape Cod Bay, Massachusetts Massachusetts 6.7°C
47 Cotuit Highlands, Nantucket Sound, Massachusetts Massachusetts 6.7°C
48 Hyannis Port, Nantucket Sound Massachusetts 6.7°C
49 Poponesset Island, Poponesset Bay, Nantucket Sound, Massachusetts Massachusetts 6.7°C
50 Succonnesset Point Massachusetts 6.7°C

Warmest 10 in Massachusetts in December

Same data flipped. The warmest spots in the state for this month.

# Location December mean
1 Texas Tower, Georges Shoal Massachusetts 9.5°C
2 Fall River Massachusetts 9.2°C
3 Horseneck Beach Massachusetts 9.2°C
4 Westport Massachusetts 9.2°C
5 Chilmark Massachusetts 9.2°C
6 Edgartown Massachusetts 9.2°C
7 Martha's Vineyard Massachusetts 9.2°C
8 Oak Bluffs Massachusetts 9.2°C
9 Vineyard Haven Massachusetts 9.2°C
10 Fall River, Narragansett Bay Massachusetts 9.1°C

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