Current sea water temperature:
+56.1°F
| Minimum sea water temperature in October: | 63.9°F |
| Maximum sea water temperature in October: | 45.9°F |
| Average sea water temperature in October: | 53.6°F |
| more information | |
14 days
forecast
forecast
| Thunder Bay |
monthly
weather
weather
| Thunder Bay |
Sea water temperature for the last 10 days:
| October 5 | 56.1°F | September 30 | 56.5°F |
| October 4 | 56.3°F | September 29 | 56.8°F |
| October 3 | 57.0°F | September 28 | 57.0°F |
| October 2 | 57.2°F | September 27 | 55.9°F |
| October 1 | 57.6°F | September 26 | 55.6°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 61.2°F. The highest and lowest sea temperatures during the month were 63.7°F and 56.3°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 59.6°F. The highest and lowest sea temperatures during the month were 65.5°F and 50.7°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 51.8°F. The highest and lowest sea temperatures during the month were 60.1°F and 44.8°F.
current
weather
weather
| Thunder Bay |
weather in
October
October
| 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: 16:34
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
