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Warmest beach in Maine

158 coastal locations in Maine ranked by year-round average sea temperature. The state-wide average is 9.9°C. The peak month is August at 16.7°C. Click any beach for its 30-day chart and 10-year history.

Warmest year-round

Kittery

11.2°C annual mean

State-wide average

9.9°C

across 158 Maine coastal locations

Warmest month

August

16.7°C state-wide average

What the water feels like at peak in August

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

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

Month by month around the Maine coast

Maine sea temperatures swing from 4.0°C in March to 16.7°C in August on average across the coast. That's a spread of 13°C. Pick a single month for a focused ranking:

Maine sea temperature map

Today's pin colours show the latest daily reading at every Maine beach we track. Drag and zoom; click any pin for that beach's full page.

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 beaches in Maine

Sorted by year-round average. Click any beach for its 30-day chart, monthly profile, and 10-year history.

# Location Annual mean
1 Kittery Maine 11.2°C
2 Ogunquit Maine 11.2°C
3 York Beach Maine 11.2°C
4 York Harbor Maine 11.2°C
5 Biddeford Pool Maine 11.1°C
6 Biddeford Maine 11.1°C
7 Goose Rocks Beach Maine 11.1°C
8 Kennebunkport Maine 11.1°C
9 Casco Bay Maine 11.0°C
10 Atlantic Heights, Piscataqua River, New Hampshire Maine 11.0°C
11 Cape Neddick, Maine Maine 11.0°C
12 Fort Point, York Harbor, Maine Maine 11.0°C
13 Gerrish Island, Portsmouth Harbor, New Hampshire Maine 11.0°C
14 Kennebunk Beach Maine 11.0°C
15 Kittery Point, Portsmouth Harbor, New Hampshire Maine 11.0°C
16 Seapoint, Cutts Island, Maine Maine 11.0°C
17 Seavey Island, Portsmouth Harbor Maine 11.0°C
18 Wells, Webhannet River Maine 11.0°C
19 York Harbor, Maine Maine 11.0°C
20 Wells Maine 11.0°C
21 Back Cove, Casco Bay, Maine Maine 10.9°C
22 Biddeford, Saco River Maine 10.9°C
23 Camp Ellis, Saco River Entrance Maine 10.9°C
24 Cape Elizabeth Maine 10.9°C
25 Cape Porpoise, Maine Maine 10.9°C
Show 25 more ▸
26 Fore River, Casco Bay, Maine Maine 10.9°C
27 Peaks Island Maine 10.9°C
28 Pine Point Maine 10.9°C
29 Saco Bay Maine 10.9°C
30 Scarborough Beach Maine 10.9°C
31 South Portland Maine 10.9°C
32 Higgins Beach Maine 10.8°C
33 Old Orchard Beach Maine 10.8°C
34 Portland Maine 10.8°C
35 Scarborough Maine 10.8°C
36 Brunswick, Androscoggin River, Kennebec River, Maine Maine 10.7°C
37 Cundy Harbor, New Meadows River, Casco Bay, Maine Maine 10.7°C
38 Fort Popham, Hunniwell Point, Kennebec River Maine 10.7°C
39 Howard Point, New Meadows River, Casco Bay, Maine Maine 10.7°C
40 Wilson Cove, Middle Bay, Casco Bay, Maine Maine 10.7°C
41 Cliff Island, Luckse Sound, Casco Bay, Maine Maine 10.7°C
42 Cow Island, Casco Bay, Maine Maine 10.7°C
43 Cushing Island, Casco Bay, Maine Maine 10.7°C
44 Doyle Point, Casco Bay, Maine Maine 10.7°C
45 Falmouth Foreside, Casco Bay, Maine Maine 10.7°C
46 Great Chebeague Island, Casco Bay, Maine Maine 10.7°C
47 Great Diamond Island, Casco Bay, Maine Maine 10.7°C
48 Long Island, Casco Bay, Maine Maine 10.7°C
49 Peak Island, Casco Bay, Maine Maine 10.7°C
50 Portland, Casco Bay Maine 10.7°C

Coldest 10 in Maine

Same data, sorted the other way.

# Location Annual mean
1 Acadia Maine 4.7°C
2 Cutler Naval Base, Machias Bay Maine 8.6°C
3 Gulf of Maine Maine 8.6°C
4 Shoppee Point, Englishman Bay, Maine Maine 8.6°C
5 Stone Island, Machias Bay, Maine Maine 8.6°C
6 Birch Islands, Cobscook Bay, Maine Maine 8.7°C
7 Coffin Point, Coffin Neck Maine 8.7°C
8 Cutler, Little River, Maine Maine 8.7°C
9 Garnet Point, Hersey Neck, Pennamquan River, Cobscook Bay Maine 8.7°C
10 Gravelly Point, Whiting Bay Maine 8.7°C

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