Current sea water temperature:
+32.9°F
| Minimum sea water temperature in February: | 36.0°F |
| Maximum sea water temperature in February: | 32.5°F |
| Average sea water temperature in February: | 33.3°F |
| more information | |
14 days
forecast
forecast
| Thunder Bay |
monthly
weather
weather
| Thunder Bay |
Sea water temperature for the last 10 days:
| February 24 | 32.9°F | February 19 | 32.9°F |
| February 23 | 32.9°F | February 18 | 32.9°F |
| February 22 | 32.9°F | February 17 | 32.9°F |
| February 21 | 32.9°F | February 16 | 32.7°F |
| February 20 | 32.9°F | February 15 | 32.7°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
March
March
| 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: 01:01
February 25, wednesday
0300
12°F
SE
7 mph
7 mph
0600
7°F
SE
11 mph
11 mph
0900
9°F
SE
12 mph
12 mph
1200
12°F
SE
12 mph
12 mph
1500
18°F
SE
11 mph
11 mph
1800
16°F
SE
6 mph
6 mph
2100
10°F
SE
5 mph
5 mph
February 26, thursday
0000
5°F
SE
4 mph
4 mph
