World Resorts Canada Thunder Bay Weather

Thunder Bay 7 Days Forecast

06.04
mon
Day
21°F
S 14 mph
Precip.
0%
Night
14°F
E 5 mph
Precip.
0%
07.04
tue
Day
30°F
E 9 mph
Precip.
0%
Night
21°F
NW 2 mph
Precip.
0%
08.04
wed
Day
30°F
NW 10 mph
Precip.
100%
Night
30°F
E 9 mph
Precip.
0%
09.04
thu
Day
39°F
E 12 mph
Precip.
0%
Night
27°F
E 6 mph
Precip.
0%
10.04
fri
Day
36°F
E 6 mph
Precip.
72%
Night
28°F
SE 2 mph
Precip.
0%
11.04
sat
Day
37°F
NE 3 mph
Precip.
0%
Night
32°F
W 4 mph
Precip.
26%
12.04
sun
Day
34°F
W 4 mph
Precip.
53%
Night
36°F
W 4 mph
Precip.
100%

Sea water temperature in April, °F

Show year:
2025
2024
2023

The average sea water temperature in April of 2025 was 34.4°F. The highest and lowest sea temperatures during the month were 38.5°F and 32.7°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:
January 13.9 °F
February 15.0 °F
December 21.1 °F
Rainiest months:
September 2 days
August 2 days
April 2 days
Windiest months:
November 9.6 mph
December 9.2 mph
April 8.8 mph

Thunder Bay on a weather map

Current weather
17:47
Thunder Bay
+23°F
SE 12 mph
Feels like: +10°F
Precip.: 100%
Places in Canada:
Name
°F
Vancouver
+61°F
Victoria
+66°F
Winnipeg
+27°F
Halifax
+43°F
Quebec
+27°F
Les Iles-de-la-Madeleine
+32°F
Montreal
+34°F
Prince Edward Island
+37°F
Ottawa
+36°F
Saint John
+36°F
St. John's
+39°F
Sydney
+43°F
Thunder Bay
+23°F
Toronto
+37°F
Tofino
+52°F
all places
24 Hours Forecast
Thunder Bay
Local time: 17:47
April 06, monday
1800
23°F
SE
12 mph
2100
16°F
SE
6 mph
April 07, tuesday
0000
14°F
E
5 mph
0300
12°F
E
5 mph
0600
9°F
E
5 mph
0900
14°F
E
6 mph
1200
30°F
E
9 mph
1500
36°F
NE
9 mph
Units of measurement: °C / °F