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Coldest beach in New York in September

241 coastal locations in New York ranked by their typical September sea temperature. State-wide average in September: 21.9°C.

Coldest in September

Lake Champlain

18.3°C

State September average

21.9°C

across 241 coastal locations in New York

Vs annual mean

+8.3°C

above the year-round state average

What the New York water feels like in September

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.

New York monthly average 4.0°C to 23.4°C
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  • Warmest month August 23.4°C
  • Coldest month February 4.0°C
  • Annual mean 13.5°C
  • Months above 20°C 3 of 12

Where September fits in the year

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

New York sea temperature map (live)

Today's reading at every New York beach we track. The list below uses the typical September 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 New York beaches in September

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

# Location September mean
1 Buffalo New York 21.6°C
2 Silver Creek New York 21.6°C
3 Smith Point Bridge, Narrow Bay, Long Island New York 21.6°C
4 West Seneca New York 21.6°C
5 Dunkirk New York 21.5°C
6 Westfield New York 21.4°C
7 Bridgehampton New York 21.4°C
8 Coopers Beach New York 21.4°C
9 North Sea New York 21.4°C
10 Noyack New York 21.4°C
11 Peconic Bay New York 21.4°C
12 Sag Harbor New York 21.4°C
13 Shinnecock Hills New York 21.4°C
14 Southampton New York 21.4°C
15 The Hamptons New York 21.4°C
16 Greenport New York 21.1°C
17 Orient Point New York 21.1°C
18 Shelter Island Heights New York 21.1°C
19 Southold New York 21.1°C
20 Shinnecock Inlet (ocean), Long Island New York 21.1°C
21 East Hampton New York 20.9°C
22 Gardiners Bay New York 20.9°C
23 Little Gull Island, Long Island, New York New York 20.9°C
24 Plum Gut Harbor, Plum Island, Long Island New York 20.9°C
25 Silver Eel Pond, Fishers Island New York 20.9°C
Show 25 more ▸
26 Threemile Harbor entrance, Gardiners Bay, Long Island New York 20.9°C
27 Syracuse New York 20.7°C
28 Ditch Plains Beach New York 20.7°C
29 Henderson Harbor New York 20.7°C
30 Lake Placid New York 20.7°C
31 Montauk New York 20.7°C
32 Fair Haven New York 20.7°C
33 Oswego New York 20.7°C
34 Alexandria Bay New York 20.6°C
35 Clayton New York 20.6°C
36 Dexter New York 20.6°C
37 Lake Montauk, Long Island New York 20.6°C
38 Montauk, Fort Pond Bay, Long Island Sound New York 20.6°C
39 Montauk Harbor entrance, Long Island, New York New York 20.6°C
40 Montauk Point Light, Long Island Sound New York 20.6°C
41 Ogdensburg New York 20.6°C
42 Rochester New York 20.6°C
43 Tonawanda New York 20.3°C
44 Lake George New York 20.2°C
45 Olcott New York 20.1°C
46 Goat Island New York 20.1°C
47 Youngstown New York 20.1°C
48 Lake Champlain New York 18.3°C
49 Plattsburgh New York 18.3°C
50 Westport New York 18.3°C

Warmest 10 in New York in September

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

# Location September mean
1 Long Island New York 29.7°C
2 Centerport New York 22.9°C
3 Cold Spring Harbor New York 22.9°C
4 Eatons Neck New York 22.9°C
5 Halesite New York 22.9°C
6 Hudson river (Albany) New York 22.9°C
7 Huntington Bay New York 22.9°C
8 Northport New York 22.9°C
9 East Setauket New York 22.8°C
10 Long Island New York 22.8°C

Other US states

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