Average sea water temperature in May:
+39.9°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 36.1°F. The highest and lowest sea temperatures during the month were 40.8°F and 34.0°F.
sea water
temperature
temperature
| Thunder Bay |
monthly
weather
weather
| Thunder Bay |
current
weather
weather
| Thunder Bay |
14 days
forecast
forecast
| Thunder Bay |
Monthly sea water temperature in Thunder Bay, °F
Which Canada resorts have warmest sea in May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Surrey | 57.3°F | 56.6°F |
| Nanaimo | 56.6°F | 54.8°F |
| North Vancouver | 56.3°F | 55.9°F |
| Vancouver | 56.1°F | 55.7°F |
| Montreal | 53.3°F | 56.6°F |
| Tofino | 52.6°F | 52.0°F |
| Windsor | 51.4°F | 55.6°F |
| Victoria | 49.8°F | 48.9°F |
| Niagara Falls | 46.1°F | 48.9°F |
| Quebec | 46.0°F | 48.0°F |
| Kingston | 44.9°F | 48.0°F |
| Summerside | 44.5°F | 47.2°F |
| Charlottetown | 44.3°F | 45.5°F |
| Niagara-on-the-Lake | 44.3°F | 48.1°F |
| Lunenburg | 43.9°F | 46.2°F |
| Barrie | 43.1°F | 45.2°F |
| Saint Andrews | 43.1°F | 44.8°F |
| Hamilton | 42.6°F | 47.0°F |
| Saint John | 42.6°F | 42.9°F |
| Prince Edward Island | 42.4°F | 43.4°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: 15:45
May 17, sunday
1800
54°F
W
11 mph
11 mph
2100
50°F
W
6 mph
6 mph
May 18, monday
0000
46°F
W
7 mph
7 mph
0300
41°F
W
9 mph
9 mph
0600
43°F
W
9 mph
9 mph
0900
43°F
S
9 mph
9 mph
1200
50°F
SW
6 mph
6 mph
1500
52°F
SW
6 mph
6 mph
