Average sea water temperature in April:
+34.6°F
| Minimum sea water temperature in April: | 38.7°F |
| Maximum sea water temperature in April: | 32.5°F |
Daily sea water temperature in April, °F
Show year:
2025
2024
2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
28
31
34
37
40
43
The average sea water temperature in April of 2025 was 34.3°F. The highest and lowest sea temperatures during the month were 38.5°F and 32.7°F.
sea water
temperature
temperature
| Thunder Bay |
monthly
weather
weather
| Thunder Bay |
current
weather
weather
| Thunder Bay |
14 days
forecast
forecast
| Thunder Bay |
Monthly sea water temperature in Thunder Bay, °F
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
10
20
30
40
50
60
70
80
38.6
45.1
53.3
60.2
63.4
59.3
47
40.2
34.6
33
33.4
34.5
Which Canada resorts have warmest sea in April?
| Place name | April 2025 | April 2024 |
|---|---|---|
| Surrey | 51.1°F | 50.4°F |
| Nanaimo | 49.5°F | 49.1°F |
| Tofino | 49.4°F | 49.7°F |
| North Vancouver | 49.1°F | 49.2°F |
| Vancouver | 49.0°F | 49.1°F |
| Victoria | 47.4°F | 48.0°F |
| Windsor | 43.2°F | 46.2°F |
| Oshawa | 39.4°F | 40.9°F |
| Hamilton | 39.1°F | 40.8°F |
| Mississauga | 38.8°F | 41.2°F |
| Saint Andrews | 38.7°F | 41.0°F |
| Toronto | 38.5°F | 40.8°F |
| Montreal | 38.4°F | 42.8°F |
| Kingston | 38.3°F | 40.9°F |
| Lunenburg | 38.1°F | 40.1°F |
| Halifax | 37.4°F | 39.3°F |
| Niagara-on-the-Lake | 37.4°F | 41.6°F |
| Niagara Falls | 37.3°F | 39.8°F |
| Summerside | 36.9°F | 39.3°F |
| Saint John | 36.8°F | 39.2°F |
Best time for vacation in Thunder Bay
Thunder Bay on a weather map
Leaflet | Tiles © Esri
Places in Canada:
Name
°F
24 Hours Forecast
Thunder Bay
Local time: 01:39
April 28, monday
0300
39°F
N
3 mph
3 mph
0600
39°F
N
2 mph
2 mph
0900
39°F
NW
2 mph
2 mph
1200
39°F
W
4 mph
4 mph
1500
39°F
NW
6 mph
6 mph
1800
41°F
W
4 mph
4 mph
2100
43°F
W
3 mph
3 mph
April 29, tuesday
0000
43°F
S
5 mph
5 mph
