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Coldest sea in Canada in October

829 coastal locations in Canada ranked by typical October sea temperature, coldest first. Region-wide average in October: 10.0°C.

Coldest in October

Wrangel Bay

-1.6°C October mean in Canada

Regional October average

10.0°C

across all 829 coastal locations in Canada

Vs annual mean

+3.0°C

above the year-round regional average

What the Canada sea feels like in October

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.

Canada monthly average 1.8°C to 14.4°C
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  • Warmest month August 14.4°C
  • Coldest month February 1.8°C
  • Annual mean 7.0°C
  • Months above 20°C 0 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 Canada month rankings:

Canada sea temperature map (live)

The map shows today's latest reading at every Canada 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 Canada 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 Canada in October

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

# Location October mean
1 Chatham-Kent Ontario 17.3°C
2 Mitchell's Bay Ontario 17.2°C
3 Port Stanley Ontario 17.1°C
4 Port Burwell Ontario 17.1°C
5 Fort Erie Ontario 16.9°C
6 Long Point Ontario 16.9°C
7 Port Rowan Ontario 16.9°C
8 Turkey Point Ontario 16.9°C
9 Crystal Beach Ontario 16.9°C
10 Port Colborne Ontario 16.8°C

More on this region