Current sea water temperature:
+41.9°F
| Minimum sea water temperature in June: | 63.7°F |
| Maximum sea water temperature in June: | 37.4°F |
| Average sea water temperature in June: | 47.7°F |
| more information | |
14 days
forecast
forecast
| Thunder Bay |
monthly
weather
weather
| Thunder Bay |
Sea water temperature for the last 10 days:
| June 6 | 41.9°F | May 31 | 45.1°F |
| June 5 | 41.9°F | May 30 | 46.6°F |
| June 4 | 42.4°F | May 29 | 45.7°F |
| June 3 | 45.1°F | May 28 | 45.3°F |
| June 1 | 45.0°F | May 27 | 44.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Thunder Bay?
Based on the data about daily sea water temperature for the last three years the warmest sea in Thunder Bay was noticed in August, September and July.
Monthly Sea Temperatures in Thunder Bay, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 63.2°F. The highest and lowest sea temperatures during the month were 68.0°F and 59.9°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 59.9°F. The highest and lowest sea temperatures during the month were 62.2°F and 57.4°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 61.1°F. The highest and lowest sea temperatures during the month were 64.9°F and 55.2°F.
current
weather
weather
| Thunder Bay |
weather in
June
June
| Thunder Bay |
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: 19:40
June 06, saturday
2100
66°F
N
3 mph
3 mph
June 07, sunday
0000
57°F
E
2 mph
2 mph
0300
54°F
W
2 mph
2 mph
0600
50°F
W
2 mph
2 mph
0900
54°F
NW
5 mph
5 mph
1200
59°F
NW
7 mph
7 mph
1500
59°F
W
9 mph
9 mph
1800
57°F
W
7 mph
7 mph
