25.12
thu
thu
Day
12°F
W 7 mph
Precip.
0%
0%
Night
27°F
NW 16 mph
Precip.
0%
0%
26.12
fri
fri
Day
30°F
SE 4 mph
Precip.
0%
0%
Night
16°F
SE 4 mph
Precip.
0%
0%
27.12
sat
sat
Day
25°F
W 5 mph
Precip.
0%
0%
Night
30°F
N 6 mph
Precip.
0%
0%
28.12
sun
sun
Day
32°F
SE 11 mph
Precip.
0%
0%
Night
14°F
S 15 mph
Precip.
82%
82%
29.12
mon
mon
Day
1°F
SE 15 mph
Precip.
0%
0%
Night
1°F
SE 11 mph
Precip.
0%
0%
30.12
tue
tue
Day
7°F
W 2 mph
Precip.
100%
100%
Night
7°F
SE 8 mph
Precip.
0%
0%
31.12
wed
wed
Day
-4°F
SE 10 mph
Precip.
0%
0%
Night
-2°F
SE 5 mph
Precip.
0%
0%
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 December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 37.8°F. The highest and lowest sea temperatures during the month were 41.7°F and 34.7°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 35.1°F. The highest and lowest sea temperatures during the month were 36.3°F and 34.0°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: 20:39
December 25, thursday
2100
25°F
NW
13 mph
13 mph
December 26, friday
0000
27°F
NW
16 mph
16 mph
0300
27°F
NW
13 mph
13 mph
0600
28°F
NW
6 mph
6 mph
0900
28°F
NW
2 mph
2 mph
1200
30°F
SE
4 mph
4 mph
1500
34°F
SE
6 mph
6 mph
1800
30°F
SE
4 mph
4 mph
