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Coldest beach in Maine in October

158 coastal locations in Maine ranked by their typical October sea temperature. State-wide average in October: 13.1°C.

Coldest in October

Acadia

6.2°C

State October average

13.1°C

across 158 coastal locations in Maine

Vs annual mean

+3.2°C

above the year-round state average

What the Maine water feels like in October

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

Maine monthly average 4.0°C to 16.7°C
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  • Warmest month August 16.7°C
  • Coldest month March 4.0°C
  • Annual mean 9.9°C
  • Months above 20°C 0 of 12

Where October fits in the year

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

Maine sea temperature map (live)

Today's reading at every Maine beach we track. The list below uses the typical October 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 Maine beaches in October

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

# Location October mean
1 Sedgwick Maine 12.8°C
2 Surry Maine 12.8°C
3 Matinicus Harbor, Wheaton Island, Penobscot Bay, Maine Maine 12.8°C
4 Blue Hill Harbor, Blue Hill Bay, Maine Maine 12.8°C
5 Center Harbor, Eggemoggin Reach, Maine Maine 12.8°C
6 Isle Au Haut, Penobscot Bay, Maine Maine 12.8°C
7 Little Deer Isle, Eggemoggin Reach, Maine Maine 12.8°C
8 Oceanville, Deer Isle, Penobscot Bay Maine 12.8°C
9 Stonington, Deer Isle, Penobscot Bay, Maine Maine 12.8°C
10 Deer Isle Maine 12.8°C
11 Stonington Maine 12.8°C
12 Frenchboro Maine 12.7°C
13 Swans Island Maine 12.7°C
14 Lamoine Maine 12.7°C
15 Tremont Maine 12.7°C
16 Trenton Maine 12.7°C
17 Bass Harbor, Mount Desert Island, Maine Maine 12.6°C
18 Mackerel Cove, Swans Island, Blue Hill Bay Maine 12.6°C
19 Southwest Harbor, Mount Desert Island, Maine Maine 12.6°C
20 Bar Harbor Maine 12.5°C
21 Franklin Maine 12.4°C
22 Hancock Maine 12.4°C
23 Sullivan Maine 12.4°C
24 Cutler Maine 12.4°C
25 Addison Maine 12.4°C
Show 25 more ▸
26 Beals Island Maine 12.4°C
27 Jonesport Maine 12.4°C
28 Milbridge Maine 12.4°C
29 Steuben Maine 12.4°C
30 Ellsworth, Union River, Blue Hill Bay Maine 12.4°C
31 Machiasport Maine 12.4°C
32 Prospect Harbor, Maine Maine 12.4°C
33 Prospect Harbour Maine 12.4°C
34 Winter Harbor, Frenchman Bay, Maine Maine 12.4°C
35 Green Island, Petit Manan Bar, Maine Maine 12.3°C
36 Steele Harbor Island, Maine Maine 12.2°C
37 Eastport, Passamaquoddy Bay Maine 12.2°C
38 Eastport Maine 12.2°C
39 Pettegrove Point, Dochet Island Maine 12.2°C
40 West Quoddy Head Maine 12.2°C
41 Gulf of Maine Maine 12.2°C
42 Birch Islands, Cobscook Bay, Maine Maine 12.1°C
43 Coffin Point, Coffin Neck Maine 12.1°C
44 Cutler, Little River, Maine Maine 12.1°C
45 Garnet Point, Hersey Neck, Pennamquan River, Cobscook Bay Maine 12.1°C
46 Gravelly Point, Whiting Bay Maine 12.1°C
47 Cutler Naval Base, Machias Bay Maine 12.1°C
48 Shoppee Point, Englishman Bay, Maine Maine 12.1°C
49 Stone Island, Machias Bay, Maine Maine 12.1°C
50 Acadia Maine 6.2°C

Warmest 10 in Maine in October

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

# Location October mean
1 Kittery Maine 14.5°C
2 Ogunquit Maine 14.5°C
3 York Beach Maine 14.5°C
4 York Harbor Maine 14.5°C
5 Wells Maine 14.3°C
6 Atlantic Heights, Piscataqua River, New Hampshire Maine 14.2°C
7 Cape Neddick, Maine Maine 14.2°C
8 Fort Point, York Harbor, Maine Maine 14.2°C
9 Gerrish Island, Portsmouth Harbor, New Hampshire Maine 14.2°C
10 Kennebunk Beach Maine 14.2°C

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