World Resorts Canada Thunder Bay Weather

Thunder Bay 14 Days Forecast

27.12
sat
Day
34°F
NW 6 mph
Precip.
82%
Night
34°F
NE 2 mph
Precip.
76%
28.12
sun
Day
32°F
S 7 mph
Precip.
0%
Night
14°F
S 22 mph
Precip.
100%
29.12
mon
Day
9°F
S 22 mph
Precip.
0%
Night
3°F
SE 15 mph
Precip.
0%
30.12
tue
Day
9°F
E 6 mph
Precip.
0%
Night
10°F
SE 11 mph
Precip.
0%
31.12
wed
Day
-2°F
SE 14 mph
Precip.
0%
Night
-6°F
SE 14 mph
Precip.
0%
01.01
thu
Day
-9°F
SE 16 mph
Precip.
0%
Night
-4°F
SE 14 mph
Precip.
0%
02.01
fri
Day
-4°F
SE 11 mph
Precip.
0%
Night
-2°F
SE 4 mph
Precip.
0%
03.01
sat
Day
3°F
SW 1 mph
Precip.
23%
Night
14°F
SE 4 mph
Precip.
100%
04.01
sun
Day
10°F
SE 9 mph
Precip.
100%
Night
7°F
SE 11 mph
Precip.
0%
05.01
mon
Day
-2°F
SE 6 mph
Precip.
0%
Night
1°F
E 2 mph
Precip.
0%
06.01
tue
Day
25°F
N 12 mph
Precip.
100%
Night
28°F
E 5 mph
Precip.
0%
07.01
wed
Day
18°F
NE 3 mph
Precip.
0%
Night
21°F
SW 7 mph
Precip.
100%
08.01
thu
Day
27°F
S 10 mph
Precip.
100%
Night
19°F
S 19 mph
Precip.
100%
09.01
fri
Day
9°F
SE 14 mph
Precip.
0%
Night
-2°F
SE 5 mph
Precip.
0%

Sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 37.5°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

Sunniest months:
September 14 days
August 14 days
July 12 days
Warmest months:
July 69.3 °F
August 69.1 °F
June 63.0 °F
Warmest sea temp:
August 63.4 °F
September 60.2 °F
July 59.6 °F
Coldest months:
February 14.2 °F
January 14.8 °F
December 21.2 °F
Rainiest months:
September 2 days
August 2 days
April 2 days
Windiest months:
November 9.6 mph
December 9.1 mph
April 8.8 mph

Thunder Bay on a weather map

Current weather
21:15
Thunder Bay
+34°F
N 7 mph
Feels like: +34°F
Precip.: 0%
Places in Canada:
Name
°F
Vancouver
+37°F
Victoria
+41°F
Winnipeg
+12°F
Halifax
+18°F
Yellowknife
-24°F
Quebec
0°F
Kingston
+12°F
Montreal
+10°F
Niagara Falls
+19°F
Prince Edward Island
+23°F
Ottawa
+7°F
Saint John
+14°F
St. John's
+34°F
Sydney
+28°F
Toronto
+21°F
all places
24 Hours Forecast
Thunder Bay
Local time: 21:15
December 28, sunday
0000
34°F
NE
2 mph
0300
32°F
SE
2 mph
0600
30°F
SE
2 mph
0900
32°F
S
4 mph
1200
32°F
S
7 mph
1500
27°F
S
9 mph
1800
23°F
S
15 mph
2100
18°F
S
19 mph
Units of measurement: °C / °F