29.09
tue
tue
Day
57°F
S 6 mph
Precip.
19%
19%
Night
55°F
N 3 mph
Precip.
12%
12%
30.09
wed
wed
Day
63°F
N 5 mph
Precip.
16%
16%
Night
63°F
N 5 mph
Precip.
25%
25%
01.10
thu
thu
Day
64°F
N 7 mph
Precip.
22%
22%
Night
63°F
N 6 mph
Precip.
61%
61%
02.10
fri
fri
Day
63°F
E 7 mph
Precip.
63%
63%
Night
55°F
SE 9 mph
Precip.
4%
4%
03.10
sat
sat
Day
55°F
SE 5 mph
Precip.
8%
8%
Night
48°F
NW 3 mph
Precip.
12%
12%
04.10
sun
sun
Day
59°F
N 11 mph
Precip.
11%
11%
Night
54°F
N 9 mph
Precip.
17%
17%
05.10
mon
mon
Day
48°F
E 14 mph
Precip.
14%
14%
Night
41°F
E 12 mph
Precip.
5%
5%
sea water
temperature
temperature
| Montreal |
monthly
weather
weather
| Montreal |
current
weather
weather
| Montreal |
14 days
forecast
forecast
| Montreal |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 67.1°F. The highest and lowest sea temperatures during the month were 72.5°F and 61.7°F.
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.
Air temperature in Montreal, °F
Precipitation total in Montreal, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Montreal
Montreal on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Montreal
Local time: 20:14
September 29, tuesday
2100
57°F
N
4 mph
4 mph
September 30, wednesday
0000
55°F
N
3 mph
3 mph
0300
54°F
N
3 mph
3 mph
0600
52°F
N
4 mph
4 mph
0900
55°F
N
5 mph
5 mph
1200
63°F
N
5 mph
5 mph
1500
68°F
NE
6 mph
6 mph
1800
64°F
N
4 mph
4 mph
