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Warmest beach in Connecticut in August

61 coastal locations in Connecticut ranked by their typical August sea temperature. State-wide average in August: 23.3°C.

Warmest in August

Byram

24.4°C

State August average

23.3°C

across 61 coastal locations in Connecticut

Vs annual mean

+10.1°C

above the year-round state average

What the Connecticut water feels like 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.

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 August fits in the year

August 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 August 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 warmest Connecticut beaches in August

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

# Location August mean
1 Byram Connecticut 24.4°C
2 Cos Cob Connecticut 24.4°C
3 Greenwich Connecticut 24.4°C
4 Old Greenwich Connecticut 24.4°C
5 Stamford Connecticut 24.4°C
6 Darien Connecticut 24.3°C
7 Fairfield Connecticut 24.3°C
8 Norwalk Connecticut 24.3°C
9 Westport Connecticut 24.3°C
10 Cos Cob Harbor, Connecticut Connecticut 24.2°C
11 East Norwalk Connecticut 24.2°C
12 Long Neck Point, Long Island Sound Connecticut 24.2°C
13 Mianus Connecticut 24.2°C
14 Rowayton, Fivemile River, Connecticut Connecticut 24.2°C
15 Saugatuck, Saugatuck River, Long Island Sound Connecticut 24.2°C
16 South Norwalk, Connecticut Connecticut 24.2°C
17 South Norwalk, Norwalk River Connecticut 24.2°C
18 Southport, Southport Harbor Connecticut 24.2°C
19 Stamford Harbor, Stamford Connecticut 24.2°C
20 Black Rock Harbor, Cedar Creek Connecticut 24.2°C
21 Gulf Beach, Connecticut Connecticut 24.2°C
22 Long Hill, Housatonic River, Connecticut Connecticut 24.2°C
23 Milford Harbor, Connecticut Connecticut 24.2°C
24 Shelton, Housatonic River, Connecticut Connecticut 24.2°C
25 Sniffens Point, Housatonic River, Connecticut Connecticut 24.2°C
Show 25 more ▸
26 Stratford, I-95 bridge, Housatonic River, Connecticut Connecticut 24.2°C
27 Branford Connecticut 24.0°C
28 Bridgeport Connecticut 24.0°C
29 Milford Connecticut 24.0°C
30 New Haven Connecticut 24.0°C
31 West Haven Connecticut 24.0°C
32 Great Captain Island Connecticut 23.5°C
33 Clinton Connecticut 23.3°C
34 Guilford Connecticut 23.3°C
35 Hammonasset Beach Connecticut 23.3°C
36 Madison Connecticut 23.3°C
37 Woodmont Connecticut 23.3°C
38 Haddam, Connecticut River, Connecticut Connecticut 23.2°C
39 Old Lyme Connecticut 22.5°C
40 Old Saybrook Connecticut 22.5°C
41 Saybrook Manor Connecticut 22.5°C
42 Westbrook Connecticut 22.5°C
43 East Haddam Connecticut 22.4°C
44 Essex, Connecticut River, Connecticut Connecticut 22.4°C
45 Hadlyme, Connecticut River, Connecticut Connecticut 22.4°C
46 Lyme, highway bridge, Connecticut River, Connecticut Connecticut 22.4°C
47 Saybrook Jetty, Connecticut River, Connecticut Connecticut 22.4°C
48 Saybrook Point, Connecticut River, Connecticut Connecticut 22.4°C
49 Tylerville, Connecticut River, Connecticut Connecticut 22.4°C
50 Groton Connecticut 22.0°C

Coldest 10 in Connecticut in August

Same data the other way.

# Location August mean
1 West Mystic, Mystic River, Long Island Sound Connecticut 21.6°C
2 Mystic Connecticut 21.8°C
3 Noank Connecticut 21.8°C
4 Stonington Connecticut 21.8°C
5 New London, Thames River Connecticut 21.9°C
6 Norwich, Thames River, Connecticut Connecticut 21.9°C
7 Yale boathouse, Thames River, Connecticut Connecticut 21.9°C
8 Groton Connecticut 22.0°C
9 New London Connecticut 22.0°C
10 Niantic Connecticut 22.0°C

Other US states

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