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Warmest sea in Canada in July

829 coastal locations in Canada ranked by their typical July sea temperature. Region-wide average in July: 12.8°C. The top of the list is where to find the warmest swimming this month.

Warmest in July

Colchester

24.7°C July mean in Canada

Regional July average

12.8°C

across all 829 coastal locations in Canada

Vs annual mean

+5.7°C

above the year-round regional average

What the Canada sea feels like in July

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

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 July fits in the year

July 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 July mean, useful for trip planning weeks or months ahead.

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 Canada locations in July

Sorted by the typical July mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location July mean
1 Colchester Ontario 24.7°C
2 Pelee Island Ontario 24.5°C
3 Point Pelee Ontario 24.5°C
4 Mitchell's Bay Ontario 23.6°C
5 Chatham-Kent Ontario 23.4°C
6 Fort Erie Ontario 23.0°C
7 Crystal Beach Ontario 22.9°C
8 Leamington Ontario 22.6°C
9 St. Clair River (Port Lambton) Ontario 22.6°C
10 Port Colborne Ontario 22.6°C
11 Windsor Ontario 22.6°C
12 Port Burwell Ontario 22.5°C
13 Port Stanley Ontario 22.5°C
14 Long Point Ontario 22.5°C
15 Port Rowan Ontario 22.5°C
16 Turkey Point Ontario 22.5°C
17 Port Dover Ontario 22.2°C
18 Montreal Quebec 22.1°C
19 Kingston Ontario 21.9°C
20 Brockville Ontario 21.9°C
21 Ottawa Ontario 21.9°C
22 Greater Napanee Ontario 21.6°C
23 Picton Ontario 21.4°C
24 Sandbanks Ontario 21.4°C
25 Cobourg Ontario 21.2°C
Show 25 more ▸
26 Niagara Falls Ontario 21.2°C
27 Scarborough Bluffs Ontario 21.2°C
28 St. Catharines Ontario 21.2°C
29 Thorold Ontario 21.2°C
30 Brighton Ontario 21.1°C
31 Port Darlington Ontario 20.9°C
32 Cherry Beach Ontario 20.9°C
33 Oakville Ontario 20.9°C
34 Toronto Islands Ontario 20.9°C
35 Toronto Ontario 20.9°C
36 Woodbine Beach Ontario 20.9°C
37 Niagara-on-the-Lake Ontario 20.8°C
38 Rouge Beach Ontario 20.8°C
39 Oshawa Ontario 20.8°C
40 Burlington Ontario 20.6°C
41 Grimsby Ontario 20.6°C
42 Hamilton Ontario 20.6°C
43 Mississauga Ontario 20.6°C
44 Sarnia Ontario 20.5°C
45 Ipperwash Beach Ontario 20.5°C
46 Lambton Shores Ontario 20.5°C
47 Pinery Ontario 20.5°C
48 Brights Grove Ontario 20.4°C
49 Highland Glen Ontario 20.4°C
50 Kennedy Acres Ontario 20.4°C

Coldest 10 in Canada in July

Same data the other way. Helpful if you want to know which Canada coasts to avoid for swimming in July.

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

More on this region