Average sea water temperature in October:
+55.7°F
| Minimum sea water temperature in October: | 59.2°F |
| Maximum sea water temperature in October: | 52.2°F |
Daily sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 54.9°F. The highest and lowest sea temperatures during the month were 57.9°F and 52.5°F.
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Monthly sea water temperature in Saint John, °F
Which Canada resorts have warmest sea in October?
| Place name | October 2025 | October 2024 |
|---|---|---|
| Niagara-on-the-Lake | 63.2°F | 62.8°F |
| Hamilton | 63.0°F | 62.0°F |
| Mississauga | 62.8°F | 60.0°F |
| Toronto | 62.7°F | 59.3°F |
| Niagara Falls | 62.4°F | 61.6°F |
| Oshawa | 62.2°F | 59.0°F |
| Barrie | 61.7°F | 60.7°F |
| Windsor | 61.7°F | 59.9°F |
| Kingston | 61.4°F | 61.7°F |
| Lunenburg | 58.9°F | 56.3°F |
| Halifax | 58.6°F | 56.3°F |
| Quebec | 58.6°F | 58.4°F |
| Montreal | 58.1°F | 57.6°F |
| Sydney | 57.5°F | 55.8°F |
| Charlottetown | 57.5°F | 56.6°F |
| Prince Edward Island | 57.0°F | 56.6°F |
| Summerside | 56.7°F | 56.7°F |
| Moncton | 55.8°F | 54.8°F |
| Saint John | 54.9°F | 54.8°F |
| Saint Andrews | 54.8°F | 54.4°F |
Best time for vacation in Saint John
Saint John on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Saint John
Local time: 16:39
January 15, thursday
1800
41°F
N
11 mph
11 mph
2100
41°F
N
12 mph
12 mph
January 16, friday
0000
39°F
N
12 mph
12 mph
0300
36°F
NE
14 mph
14 mph
0600
32°F
NE
14 mph
14 mph
0900
28°F
NE
21 mph
21 mph
1200
25°F
E
19 mph
19 mph
1500
27°F
E
19 mph
19 mph
