04.21
tue
tue
DAY
50°F
SE 6 mph
precip
0%
0%
NIGHT
32°F
W 2 mph
precip
0%
0%
04.22
wed
wed
DAY
46°F
NW 6 mph
precip
0%
0%
NIGHT
38°F
W 11 mph
precip
0%
0%
04.23
thu
thu
DAY
36°F
W 19 mph
precip
100%
100%
NIGHT
36°F
W 19 mph
precip
100%
100%
04.24
fri
fri
DAY
34°F
W 16 mph
precip
100%
100%
NIGHT
32°F
W 7 mph
precip
77%
77%
04.25
sat
sat
DAY
38°F
NW 3 mph
precip
64%
64%
NIGHT
32°F
NW 2 mph
precip
0%
0%
04.26
sun
sun
DAY
38°F
NW 2 mph
precip
100%
100%
NIGHT
32°F
NW 1 mph
precip
0%
0%
04.27
mon
mon
DAY
44°F
NW 4 mph
precip
0%
0%
NIGHT
38°F
SW 3 mph
precip
0%
0%
04.28
tue
tue
DAY
46°F
W 7 mph
precip
0%
0%
NIGHT
42°F
SW 15 mph
precip
100%
100%
04.29
wed
wed
DAY
40°F
S 11 mph
precip
100%
100%
NIGHT
34°F
S 15 mph
precip
100%
100%
04.30
thu
thu
DAY
32°F
S 16 mph
precip
100%
100%
NIGHT
32°F
S 17 mph
precip
100%
100%
05.01
fri
fri
DAY
32°F
S 17 mph
precip
100%
100%
NIGHT
30°F
S 14 mph
precip
66%
66%
05.02
sat
sat
DAY
34°F
S 12 mph
precip
0%
0%
NIGHT
24°F
S 6 mph
precip
0%
0%
05.03
sun
sun
DAY
40°F
NW 2 mph
precip
0%
0%
NIGHT
30°F
NE 2 mph
precip
0%
0%
05.04
mon
mon
DAY
44°F
NW 4 mph
precip
23%
23%
NIGHT
38°F
NW 1 mph
precip
69%
69%
Sea water
temperature
temperature
| Thunder Bay |
Weather in
April
April
| Thunder Bay |
7 day weather
forecast
forecast
| Thunder Bay |
10 day weather
forecast
forecast
| Thunder Bay |
14 day weather
forecast
forecast
| Thunder Bay |
Monthly weather
averages
averages
| Thunder Bay |
Current Weather
Conditions
Conditions
| Thunder Bay |
When is the Best
Time to Visit?
Time to Visit?
| Thunder Bay |
Thunder Bay Sea Water Temperature in April, °F
The average sea surface temperature in April 2026 for Thunder Bay was 31.1°F. The maximum and minimum values were 30.8°F and 31.6°F respectively.
Thunder Bay on the Weather Map
Canada Resorts:
NAME
F°
| Bonavista |  |
+30 |
| Halifax |  |
+30 |
| Les Iles-de-la-Madeleine |  |
+26 |
| Montreal | |
+26 |
| Ottawa | |
+24 |
| Prince Edward Island |  |
+28 |
| Quebec | |
+22 |
| Saint John | |
+30 |
| Sydney | |
+26 |
| Thunder Bay | |
+30 |
| Tofino | |
+48 |
| Toronto | |
+30 |
| Vancouver | |
+50 |
| Victoria | |
+50 |
| Winnipeg | |
+34 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Thunder Bay
Local time: 04:49
21 apr, tuesday
| 0600 |  |
30°F | SE 6 mph |
| 0900 | |
38°F | SE 7 mph |
| 1200 | |
50°F | SE 6 mph |
| 1500 | |
52°F | SE 5 mph |
| 1800 | |
50°F | E 3 mph |
| 2100 | |
38°F | N 1 mph |
22 apr, wednesday
| 0000 | |
32°F | W 2 mph |
| 0300 | |
30°F | W 1 mph |