Current sea water temperature:
+54.3°F
| Minimum sea water temperature in May: | 69.1°F |
| Maximum sea water temperature in May: | 32.0°F |
| Average sea water temperature in May: | 53.4°F |
| more information | |
14 days
forecast
forecast
| Montreal |
monthly
weather
weather
| Montreal |
Sea water temperature for the last 10 days:
| May 17 | 54.3°F | May 12 | 53.2°F |
| May 16 | 53.2°F | May 11 | 53.1°F |
| May 15 | 53.1°F | May 10 | 52.9°F |
| May 14 | 53.1°F | May 9 | 53.8°F |
| May 13 | 53.1°F | May 8 | 53.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Montreal?
Based on the data about daily sea water temperature for the last three years the warmest sea in Montreal was noticed in July, August and September.
Monthly Sea Temperatures in Montreal, °F
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 75.8°F. The highest and lowest sea temperatures during the month were 79.2°F and 71.8°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 74.7°F. The highest and lowest sea temperatures during the month were 79.2°F and 68.7°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 66.7°F. The highest and lowest sea temperatures during the month were 69.6°F and 64.2°F.
current
weather
weather
| Montreal |
weather in
May
May
| Montreal |
Best time for vacation in Montreal
Montreal on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Montreal
Local time: 15:26
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
