Average sea water temperature in August:
+63.0°F
| Minimum sea water temperature in August: | 69.6°F |
| Maximum sea water temperature in August: | 56.1°F |
Daily sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 61.2°F. The highest and lowest sea temperatures during the month were 63.7°F and 56.3°F.
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Monthly sea water temperature in Thunder Bay, °F
Which Canada resorts have warmest sea in August?
| Place name | August 2026 | August 2025 |
|---|---|---|
| Montreal | 74.6°F | 74.7°F |
| Windsor | 74.6°F | 74.3°F |
| Niagara-on-the-Lake | 73.2°F | 74.7°F |
| Kingston | 73.2°F | 73.2°F |
| Quebec | 71.6°F | 73.1°F |
| Niagara Falls | 71.5°F | 72.9°F |
| Barrie | 71.2°F | 72.6°F |
| Summerside | 71.0°F | 70.2°F |
| Winnipeg | 71.0°F | 69.0°F |
| Gimli | 70.5°F | 68.6°F |
| Hamilton | 69.9°F | 73.8°F |
| Charlottetown | 69.8°F | 68.9°F |
| Toronto | 68.6°F | 73.2°F |
| Prince Edward Island | 68.5°F | 67.9°F |
| Mississauga | 68.5°F | 73.4°F |
| Oshawa | 68.2°F | 73.1°F |
| Sydney | 66.9°F | 67.5°F |
| Surrey | 65.9°F | 65.2°F |
| Halifax | 65.7°F | 63.9°F |
| Lunenburg | 65.6°F | 64.0°F |
Best time for vacation in Thunder Bay
Thunder Bay on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Thunder Bay
Local time: 14:00
September 15, tuesday
1500
57°F
E
17 mph
17 mph
1800
63°F
E
17 mph
17 mph
2100
59°F
E
7 mph
7 mph
September 16, wednesday
0000
54°F
E
9 mph
9 mph
0300
50°F
SE
11 mph
11 mph
0600
46°F
SE
8 mph
8 mph
0900
45°F
SE
8 mph
8 mph
1200
52°F
SW
1 mph
1 mph
