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Coldest beach in Connecticut in December

61 coastal locations in Connecticut ranked by their typical December sea temperature. State-wide average in December: 8.1°C.

Coldest in December

Byram

7.5°C

State December average

8.1°C

across 61 coastal locations in Connecticut

Vs annual mean

-5.1°C

below the year-round state average

What the Connecticut 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.

Connecticut monthly average 3.1°C to 23.3°C
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  • Warmest month August 23.3°C
  • Coldest month February 3.1°C
  • Annual mean 13.2°C
  • Months above 20°C 3 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.

Connecticut sea temperature map (live)

Today's reading at every Connecticut 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 Connecticut beaches in December

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

# Location December mean
1 New London, Thames River Connecticut 8.9°C
2 Norwich, Thames River, Connecticut Connecticut 8.9°C
3 East Haddam Connecticut 8.5°C
4 Essex, Connecticut River, Connecticut Connecticut 8.5°C
5 Hadlyme, Connecticut River, Connecticut Connecticut 8.5°C
6 Lyme, highway bridge, Connecticut River, Connecticut Connecticut 8.5°C
7 Old Lyme Connecticut 8.5°C
8 Old Saybrook Connecticut 8.5°C
9 Saybrook Jetty, Connecticut River, Connecticut Connecticut 8.5°C
10 Saybrook Manor Connecticut 8.5°C
11 Saybrook Point, Connecticut River, Connecticut Connecticut 8.5°C
12 Tylerville, Connecticut River, Connecticut Connecticut 8.5°C
13 Westbrook Connecticut 8.5°C
14 Haddam, Connecticut River, Connecticut Connecticut 8.0°C
15 Clinton Connecticut 7.9°C
16 Guilford Connecticut 7.9°C
17 Hammonasset Beach Connecticut 7.9°C
18 Madison Connecticut 7.9°C
19 Woodmont Connecticut 7.9°C
20 Branford Connecticut 7.7°C
21 Bridgeport Connecticut 7.7°C
22 Milford Connecticut 7.7°C
23 New Haven Connecticut 7.7°C
24 West Haven Connecticut 7.7°C
25 Black Rock Harbor, Cedar Creek Connecticut 7.6°C
Show 25 more ▸
26 Gulf Beach, Connecticut Connecticut 7.6°C
27 Long Hill, Housatonic River, Connecticut Connecticut 7.6°C
28 Milford Harbor, Connecticut Connecticut 7.6°C
29 Shelton, Housatonic River, Connecticut Connecticut 7.6°C
30 Sniffens Point, Housatonic River, Connecticut Connecticut 7.6°C
31 Stratford, I-95 bridge, Housatonic River, Connecticut Connecticut 7.6°C
32 Cos Cob Harbor, Connecticut Connecticut 7.6°C
33 East Norwalk Connecticut 7.6°C
34 Long Neck Point, Long Island Sound Connecticut 7.6°C
35 Mianus Connecticut 7.6°C
36 Rowayton, Fivemile River, Connecticut Connecticut 7.6°C
37 Saugatuck, Saugatuck River, Long Island Sound Connecticut 7.6°C
38 South Norwalk, Connecticut Connecticut 7.6°C
39 South Norwalk, Norwalk River Connecticut 7.6°C
40 Southport, Southport Harbor Connecticut 7.6°C
41 Stamford Harbor, Stamford Connecticut 7.6°C
42 Darien Connecticut 7.5°C
43 Fairfield Connecticut 7.5°C
44 Norwalk Connecticut 7.5°C
45 Westport Connecticut 7.5°C
46 Byram Connecticut 7.5°C
47 Cos Cob Connecticut 7.5°C
48 Greenwich Connecticut 7.5°C
49 Old Greenwich Connecticut 7.5°C
50 Stamford Connecticut 7.5°C

Warmest 10 in Connecticut in December

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

# Location December mean
1 Mystic Connecticut 9.4°C
2 Noank Connecticut 9.4°C
3 Stonington Connecticut 9.4°C
4 West Mystic, Mystic River, Long Island Sound Connecticut 9.4°C
5 Groton Connecticut 9.0°C
6 New London Connecticut 9.0°C
7 Niantic Connecticut 9.0°C
8 Ocean Beach Park Connecticut 9.0°C
9 Waterford Connecticut 9.0°C
10 Great Captain Island Connecticut 9.0°C

Other US states

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