Average sea water temperature in July:
+58.6°F
| Minimum sea water temperature in July: | 67.6°F |
| Maximum sea water temperature in July: | 41.4°F |
Daily sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 47.8°F. The highest and lowest sea temperatures during the month were 50.5°F and 44.8°F.
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| Thunder Bay |
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| Thunder Bay |
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| Thunder Bay |
Monthly sea water temperature in Thunder Bay, °F
Which Canada resorts have warmest sea in July?
| Place name | July 2026 | July 2025 |
|---|---|---|
| Montreal | 76.7°F | 75.8°F |
| Windsor | 75.6°F | 75.4°F |
| Niagara-on-the-Lake | 72.9°F | 74.3°F |
| Quebec | 72.8°F | 69.7°F |
| Niagara Falls | 72.5°F | 72.5°F |
| Kingston | 72.4°F | 72.3°F |
| Barrie | 72.2°F | 70.7°F |
| Winnipeg | 72.0°F | 70.7°F |
| Gimli | 70.0°F | 69.7°F |
| Hamilton | 68.1°F | 70.6°F |
| Summerside | 66.9°F | 68.7°F |
| Toronto | 66.8°F | 68.5°F |
| Oshawa | 66.4°F | 67.1°F |
| Mississauga | 66.3°F | 68.7°F |
| Charlottetown | 64.7°F | 66.1°F |
| Prince Edward Island | 64.5°F | 66.5°F |
| Surrey | 63.2°F | 65.4°F |
| North Vancouver | 62.8°F | 65.1°F |
| Vancouver | 62.7°F | 64.9°F |
| Nanaimo | 62.6°F | 64.8°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: 08:11
July 17, friday
0900
66°F
NE
1 mph
1 mph
1200
66°F
N
2 mph
2 mph
1500
73°F
N
4 mph
4 mph
1800
81°F
N
6 mph
6 mph
2100
59°F
N
4 mph
4 mph
July 18, saturday
0000
61°F
NE
7 mph
7 mph
0300
59°F
N
1 mph
1 mph
0600
61°F
SE
6 mph
6 mph
