Average sea water temperature in October:
+57.5°F
| Minimum sea water temperature in October: | 69.1°F |
| Maximum sea water temperature in October: | 32.0°F |
Daily sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 58.1°F. The highest and lowest sea temperatures during the month were 66.0°F and 50.2°F.
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Monthly sea water temperature in Montreal, °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 Montreal
Montreal on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Montreal
Local time: 15:27
May 17, sunday
1800
75°F
SE
9 mph
9 mph
2100
61°F
S
4 mph
4 mph
May 18, monday
0000
55°F
SW
6 mph
6 mph
0300
54°F
SW
6 mph
6 mph
0600
52°F
SW
5 mph
5 mph
0900
52°F
SW
4 mph
4 mph
1200
54°F
W
7 mph
7 mph
1500
55°F
SW
6 mph
6 mph
