Skip to content
seatemperatures.net

Coldest beach in Maine in December

158 coastal locations in Maine ranked by their typical December sea temperature. State-wide average in December: 7.7°C.

Coldest in December

Acadia

1.4°C

State December average

7.7°C

across 158 coastal locations in Maine

Vs annual mean

-2.2°C

below the year-round state average

What the Maine 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.

Maine monthly average 4.0°C to 16.7°C
J
F
M
A
M
J
J
A
S
O
N
D
  • 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 December fits in the year

December 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 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 Maine beaches in December

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

# Location December mean
1 Back Cove, Casco Bay, Maine Maine 7.7°C
2 Biddeford, Saco River Maine 7.7°C
3 Damariscove Harbor, Damariscove Island, Maine Maine 7.6°C
4 East Boothbay, Damariscotta River, Maine Maine 7.6°C
5 Newcastle, Damariscotta River, Maine Maine 7.6°C
6 Pemaquid Harbor, Johns Bay, Maine Maine 7.6°C
7 Sedgwick Maine 7.6°C
8 Sheepscot (below rapids), Sheepscot River, Maine Maine 7.6°C
9 Southport, Townsend Gut, Maine Maine 7.6°C
10 Surry Maine 7.6°C
11 Walpole, Damariscotta River Maine 7.6°C
12 Freeport Maine 7.6°C
13 Blue Hill Harbor, Blue Hill Bay, Maine Maine 7.5°C
14 Center Harbor, Eggemoggin Reach, Maine Maine 7.5°C
15 Cliff Island, Luckse Sound, Casco Bay, Maine Maine 7.5°C
16 Cow Island, Casco Bay, Maine Maine 7.5°C
17 Cushing Island, Casco Bay, Maine Maine 7.5°C
18 Doyle Point, Casco Bay, Maine Maine 7.5°C
19 Falmouth Foreside, Casco Bay, Maine Maine 7.5°C
20 Great Chebeague Island, Casco Bay, Maine Maine 7.5°C
21 Great Diamond Island, Casco Bay, Maine Maine 7.5°C
22 Isle Au Haut, Penobscot Bay, Maine Maine 7.5°C
23 Little Deer Isle, Eggemoggin Reach, Maine Maine 7.5°C
24 Long Island, Casco Bay, Maine Maine 7.5°C
25 Oceanville, Deer Isle, Penobscot Bay Maine 7.5°C
Show 25 more ▸
26 Peak Island, Casco Bay, Maine Maine 7.5°C
27 Portland, Casco Bay Maine 7.5°C
28 Portland Head Light, Casco Bay, Maine Maine 7.5°C
29 Presumpscot River Bridge, Casco Bay, Maine Maine 7.5°C
30 Prince Point, Casco Bay, Maine Maine 7.5°C
31 South Freeport, Casco Bay, Maine Maine 7.5°C
32 South Harpswell, Potts Harbor, Casco Bay, Maine Maine 7.5°C
33 Stonington, Deer Isle, Penobscot Bay, Maine Maine 7.5°C
34 Vaill Island, Casco Bay, Maine Maine 7.5°C
35 Richmond Maine 7.5°C
36 North Haven, Penobscot Bay, Maine Maine 7.2°C
37 Pulpit Harbor, North Haven Island, Penobscot Bay Maine 7.2°C
38 Vinalhaven, Vinalhaven Island, Penobscot Bay, Maine Maine 7.2°C
39 Castine Maine 7.1°C
40 Bucksport, Penobscot River, Maine Maine 6.7°C
41 Fort Point, Penobscot River Maine 6.7°C
42 Gross Point, Eastern Channel, Penobscot River, Maine Maine 6.7°C
43 Sandy Point, Penobscot River, Maine Maine 6.7°C
44 Belfast Maine 6.5°C
45 Bucksport Maine 6.5°C
46 Lincolnville Maine 6.5°C
47 Orland Maine 6.5°C
48 Vinalhaven Maine 6.5°C
49 Winterport Maine 6.5°C
50 Acadia Maine 1.4°C

Warmest 10 in Maine in December

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

# Location December mean
1 Cutler Maine 8.5°C
2 Eastport Maine 8.5°C
3 Machiasport Maine 8.4°C
4 Birch Islands, Cobscook Bay, Maine Maine 8.3°C
5 Coffin Point, Coffin Neck Maine 8.3°C
6 Cutler, Little River, Maine Maine 8.3°C
7 Garnet Point, Hersey Neck, Pennamquan River, Cobscook Bay Maine 8.3°C
8 Gravelly Point, Whiting Bay Maine 8.3°C
9 Gulf of Maine Maine 8.3°C
10 Addison Maine 8.3°C

Other US states

Related rankings