06.08
thu
thu
Day
84°F
NE 12 mph
Precip.
1%
1%
Night
68°F
NE 9 mph
Precip.
11%
11%
07.08
fri
fri
Day
63°F
E 2 mph
Precip.
21%
21%
Night
55°F
SE 5 mph
Precip.
14%
14%
08.08
sat
sat
Day
70°F
NE 5 mph
Precip.
2%
2%
Night
55°F
W 3 mph
Precip.
11%
11%
09.08
sun
sun
Day
68°F
SE 12 mph
Precip.
2%
2%
Night
55°F
E 4 mph
Precip.
14%
14%
10.08
mon
mon
Day
68°F
SE 7 mph
Precip.
3%
3%
Night
52°F
E 2 mph
Precip.
11%
11%
11.08
tue
tue
Day
66°F
E 5 mph
Precip.
4%
4%
Night
55°F
E 4 mph
Precip.
18%
18%
12.08
wed
wed
Day
64°F
SE 13 mph
Precip.
10%
10%
Night
52°F
SE 9 mph
Precip.
7%
7%
sea water
temperature
temperature
| Thunder Bay |
monthly
weather
weather
| Thunder Bay |
current
weather
weather
| Thunder Bay |
14 days
forecast
forecast
| Thunder Bay |
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.
Air temperature in Thunder Bay, °F
Precipitation total in Thunder Bay, in.
* Charts above show average data for the last 3 years.
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: 09:52
August 06, thursday
1200
84°F
NE
12 mph
12 mph
1500
88°F
N
17 mph
17 mph
1800
77°F
N
14 mph
14 mph
2100
68°F
NE
9 mph
9 mph
August 07, friday
0000
68°F
NE
9 mph
9 mph
0300
59°F
NE
7 mph
7 mph
0600
57°F
E
6 mph
6 mph
0900
59°F
SE
5 mph
5 mph
