Average sea water temperature in August:
+63.1°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 61.1°F. The highest and lowest sea temperatures during the month were 63.7°F and 56.3°F.
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| Thunder Bay |
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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 |
|---|---|---|
| Windsor | 75.1°F | 74.3°F |
| Montreal | 75.0°F | 74.7°F |
| Niagara-on-the-Lake | 73.5°F | 74.7°F |
| Kingston | 73.4°F | 73.2°F |
| Quebec | 71.7°F | 73.1°F |
| Niagara Falls | 71.7°F | 72.9°F |
| Barrie | 71.5°F | 72.6°F |
| Winnipeg | 71.3°F | 69.0°F |
| Summerside | 70.9°F | 70.2°F |
| Gimli | 70.8°F | 68.6°F |
| Hamilton | 70.0°F | 73.8°F |
| Charlottetown | 69.8°F | 68.9°F |
| Oshawa | 69.5°F | 73.1°F |
| Mississauga | 69.2°F | 73.4°F |
| Toronto | 69.1°F | 73.2°F |
| Prince Edward Island | 68.6°F | 67.9°F |
| Sydney | 66.5°F | 67.5°F |
| Surrey | 66.0°F | 65.2°F |
| Lunenburg | 65.2°F | 64.0°F |
| Halifax | 65.2°F | 63.9°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: 13:00
August 26, wednesday
1500
73°F
SE
11 mph
11 mph
1800
68°F
SE
11 mph
11 mph
2100
66°F
SE
11 mph
11 mph
August 27, thursday
0000
61°F
SE
11 mph
11 mph
0300
57°F
SE
9 mph
9 mph
0600
55°F
SE
8 mph
8 mph
0900
54°F
SE
6 mph
6 mph
1200
61°F
SE
2 mph
2 mph
