Average sea water temperature in May:
+40.1°F
| Minimum sea water temperature in May: | 53.2°F |
| Maximum sea water temperature in May: | 34.0°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 39.0°F. The highest and lowest sea temperatures during the month were 46.6°F and 34.0°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 May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Surrey | 57.7°F | 56.6°F |
| Nanaimo | 57.3°F | 54.8°F |
| North Vancouver | 56.6°F | 55.9°F |
| Vancouver | 56.5°F | 55.7°F |
| Montreal | 56.3°F | 56.6°F |
| Windsor | 53.7°F | 55.6°F |
| Tofino | 52.6°F | 52.0°F |
| Quebec | 49.9°F | 48.0°F |
| Victoria | 49.9°F | 48.9°F |
| Niagara Falls | 49.3°F | 48.9°F |
| Kingston | 47.5°F | 48.0°F |
| Summerside | 46.7°F | 47.2°F |
| Charlottetown | 46.4°F | 45.5°F |
| Lunenburg | 46.3°F | 46.2°F |
| Niagara-on-the-Lake | 46.3°F | 48.1°F |
| Barrie | 45.4°F | 45.2°F |
| Moncton | 45.2°F | 45.0°F |
| Prince Edward Island | 44.7°F | 43.4°F |
| Hamilton | 44.5°F | 47.0°F |
| Halifax | 44.4°F | 45.2°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: 17:01
October 05, monday
1800
48°F
N
12 mph
12 mph
2100
46°F
N
9 mph
9 mph
October 06, tuesday
0000
46°F
N
9 mph
9 mph
0300
48°F
N
12 mph
12 mph
0600
50°F
NW
11 mph
11 mph
0900
52°F
N
13 mph
13 mph
1200
55°F
N
14 mph
14 mph
1500
59°F
NE
14 mph
14 mph
