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Coldest sea in North America in October

5,500 coastal locations in North America ranked by typical October sea temperature, coldest first. Region-wide average in October: 17.8°C.

Coldest in October

Wrangel Bay

-1.6°C October mean in Canada

Regional October average

17.8°C

across all 5,500 coastal locations in North America

Vs annual mean

+2.6°C

above the year-round regional average

What the North America sea feels like in October

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.

North America monthly average 9.3°C to 21.6°C
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  • Warmest month August 21.6°C
  • Coldest month February 9.3°C
  • Annual mean 15.2°C
  • Months above 20°C 3 of 12

Where October fits in the year

October sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve North America month rankings:

North America sea temperature map (live)

The map shows today's latest reading at every North America location. The list below is based on the typical October mean.

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 North America locations in October

Sorted by typical October mean from a decade of daily readings, coldest first. Click any place for the full location page.

# Location October mean
1 Wrangel Bay Nunavut -1.6°C
2 Cameron Island Nunavut -1.6°C
3 Cape Sheridan Nunavut -1.6°C
4 Alert Nunavut -1.6°C
5 Discovery Harbour Nunavut -1.6°C
6 Iceberg Point Nunavut -1.5°C
7 Isachsen Nunavut -1.5°C
8 Pim Island Nunavut -1.5°C
9 Greely Fiord Nunavut -1.5°C
10 Airstrip Point Nunavut -1.5°C
11 Hamilton Island Nunavut -1.3°C
12 Cape Capel Nunavut -1.2°C
13 Grise Fiord Nunavut -1.1°C
14 Little Cornwallis Island Nunavut -1.1°C
15 Cape Skogn Nunavut -1.1°C
16 Bay of Woe Nunavut -1.1°C
17 Radstock Bay Nunavut -1.1°C
18 Rigby Bay Nunavut -1.1°C
19 Beechey Island Nunavut -1.0°C
20 Erebus Bay Nunavut -1.0°C
21 Resolute Nunavut -1.0°C
22 Cape Kater Nunavut -1.0°C
23 Peel Point Northwest Territories -0.9°C
24 Winter Harbour Northwest Territories -0.9°C
25 Fury Point Nunavut -0.8°C
Show 25 more ▸
26 Dease Peninsula Nunavut -0.8°C
27 Entrance Island Nunavut -0.8°C
28 Dundas Harbour Nunavut -0.8°C
29 Crown Prince Frederick Nunavut -0.7°C
30 Bellot Strait East Nunavut -0.7°C
31 Fort Ross Nunavut -0.7°C
32 Crown Prince Frederick Island Nunavut -0.7°C
33 Cape Barclay Nunavut -0.7°C
34 False Strait Nunavut -0.7°C
35 Baffin Nunavut -0.6°C
36 Arctic Bay Nunavut -0.6°C
37 Lavoie Islands (Bernier Bay) Nunavut -0.6°C
38 Natkusiak Peninsula Northwest Territories -0.5°C
39 Purfur Cove Nunavut -0.5°C
40 Cape Sibbald Nunavut -0.5°C
41 Martin Islands Nunavut -0.3°C
42 Pisiktarfik Island Nunavut -0.3°C
43 Bonne Island Nunavut -0.1°C
44 Cambridge Bay Nunavut -0.1°C
45 Herschel Island Yukon 0.0°C
46 Oscar Bay Nunavut 0.1°C
47 Kay point Yukon 0.1°C
48 Milne Inlet Nunavut 0.2°C
49 Sévigny Point Nunavut 0.2°C
50 Shingle Point Yukon 0.2°C

Warmest 10 in North America in October

Same data the other way. The warmest spots for the same month.

# Location October mean
1 Los Ayala Nayarit 30.5°C
2 Rincon de Guayabitos Nayarit 30.5°C
3 San Blas Nayarit 30.5°C
4 Teacapan Sinaloa 30.4°C
5 Bucerias Nayarit 30.4°C
6 Lo de Marcos Nayarit 30.4°C
7 Riviera Nayarit Nayarit 30.4°C
8 San Pancho Nayarit 30.4°C
9 Sayulita Nayarit 30.4°C
10 Bahia de Banderas Nayarit 30.3°C

More on this region