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Warmest sea in Canada

829 coastal locations in Canada ranked by their year-round average sea temperature. The regional average is 7.0°C. The top of the list shows where to find the warmest water in a typical year. The bottom shows the coldest year-round coasts of the region.

Warmest location

Cobb Seamount

12.4°C annual mean in Canada

Regional average

7.0°C

across all 829 Canada coastal locations

Warmest month

August

14.4°C region-wide average

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

Month by month across Canada

Sea temperatures in Canada swing from 1.8°C in February to 14.4°C in August on average across every coast we track. That spread of 13°C hides much bigger swings at individual locations.

Want a specific month? Pick one for a dedicated ranking:

Canada sea temperature map

Today's pin colours show the latest daily reading at every Canada location we track. Pick any pin for the location'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 locations in Canada

The warmest coastal locations across all of Canada, sorted by year-round average. Click any place for its 30-day chart, monthly profile, and 10-year history.

# Location Annual mean
1 Cobb Seamount British Columbia 12.4°C
2 Colchester Ontario 12.0°C
3 Harmac British Columbia 12.0°C
4 Pelee Island Ontario 12.0°C
5 Point Pelee Ontario 12.0°C
6 Franklin River British Columbia 12.0°C
7 Nanaimo British Columbia 12.0°C
8 Sechelt British Columbia 11.9°C
9 False Bay British Columbia 11.9°C
10 Welcome Bay British Columbia 11.9°C
11 Nanoose Bay British Columbia 11.9°C
12 Winchelsea Islands British Columbia 11.9°C
13 Squamish British Columbia 11.9°C
14 Denman Island British Columbia 11.9°C
15 Little River British Columbia 11.9°C
16 Port Alberni British Columbia 11.9°C
17 Parksville British Columbia 11.9°C
18 Qualicum Beach British Columbia 11.9°C
19 Powell River British Columbia 11.9°C
20 Blubber Bay British Columbia 11.8°C
21 Channel Island British Columbia 11.8°C
22 Prideaux Haven British Columbia 11.8°C
23 Hornby Island British Columbia 11.8°C
24 Chatham-Kent Ontario 11.8°C
25 Dionisio Point British Columbia 11.8°C
Show 25 more ▸
26 Gibsons British Columbia 11.8°C
27 Ladysmith British Columbia 11.8°C
28 Preedy Harbour British Columbia 11.8°C
29 Salt Spring Island British Columbia 11.8°C
30 Silva Bay British Columbia 11.8°C
31 Gorge Harbour British Columbia 11.8°C
32 Lund British Columbia 11.8°C
33 Mitchell's Bay Ontario 11.8°C
34 Mitlenatch Island British Columbia 11.8°C
35 Twin Islands British Columbia 11.8°C
36 Comox British Columbia 11.7°C
37 Cortes Island British Columbia 11.7°C
38 Courtenay British Columbia 11.7°C
39 Desolation Sound British Columbia 11.7°C
40 Campbell River British Columbia 11.7°C
41 Heriot Bay British Columbia 11.7°C
42 Vancouver Island British Columbia 11.7°C
43 Whaletown Bay British Columbia 11.7°C
44 Bowen Island British Columbia 11.6°C
45 Fort Erie Ontario 11.6°C
46 Howe Sound British Columbia 11.6°C
47 Sand Heads British Columbia 11.6°C
48 Crystal Beach Ontario 11.6°C
49 Montreal Quebec 11.6°C
50 Port Colborne Ontario 11.5°C

Coldest 10 in Canada for contrast

Same data, sorted the other way. Useful if you want to know which Canada coasts stay coldest year-round.

# Location Annual mean
1 Wrangel Bay Nunavut -1.6°C
2 Cameron Island Nunavut -1.6°C
3 Alert Nunavut -1.6°C
4 Cape Sheridan Nunavut -1.6°C
5 Discovery Harbour Nunavut -1.6°C
6 Iceberg Point Nunavut -1.6°C
7 Airstrip Point Nunavut -1.6°C
8 Isachsen Nunavut -1.5°C
9 Hamilton Island Nunavut -1.4°C
10 Pim Island Nunavut -1.4°C

More on this region