15.09
tue
tue
Day
63°F
N 7 mph
Precip.
13%
13%
Night
63°F
N 9 mph
Precip.
17%
17%
16.09
wed
wed
Day
73°F
E 9 mph
Precip.
8%
8%
Night
59°F
SW 6 mph
Precip.
18%
18%
17.09
thu
thu
Day
63°F
SW 5 mph
Precip.
14%
14%
Night
59°F
NE 5 mph
Precip.
21%
21%
18.09
fri
fri
Day
61°F
S 10 mph
Precip.
1%
1%
Night
50°F
SW 7 mph
Precip.
3%
3%
19.09
sat
sat
Day
57°F
W 4 mph
Precip.
10%
10%
Night
50°F
W 3 mph
Precip.
17%
17%
20.09
sun
sun
Day
59°F
SW 4 mph
Precip.
4%
4%
Night
54°F
SW 9 mph
Precip.
6%
6%
21.09
mon
mon
Day
55°F
SW 7 mph
Precip.
7%
7%
Night
50°F
SW 5 mph
Precip.
13%
13%
22.09
tue
tue
Day
55°F
W 6 mph
Precip.
14%
14%
Night
54°F
NW 11 mph
Precip.
26%
26%
23.09
wed
wed
Day
55°F
N 12 mph
Precip.
59%
59%
Night
59°F
N 6 mph
Precip.
32%
32%
24.09
thu
thu
Day
63°F
N 11 mph
Precip.
46%
46%
Night
54°F
N 6 mph
Precip.
31%
31%
25.09
fri
fri
Day
55°F
E 9 mph
Precip.
39%
39%
Night
46°F
SE 15 mph
Precip.
8%
8%
26.09
sat
sat
Day
52°F
E 10 mph
Precip.
2%
2%
Night
52°F
NE 7 mph
Precip.
6%
6%
27.09
sun
sun
Day
64°F
NE 9 mph
Precip.
7%
7%
Night
61°F
NE 6 mph
Precip.
26%
26%
28.09
mon
mon
Day
61°F
N 5 mph
Precip.
24%
24%
Night
66°F
N 6 mph
Precip.
21%
21%
sea water
temperature
temperature
| Montreal |
monthly
weather
weather
| Montreal |
current
weather
weather
| Montreal |
7 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 70.0°F. The highest and lowest sea temperatures during the month were 72.5°F and 67.3°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: 14:00
September 15, tuesday
1500
61°F
NW
7 mph
7 mph
1800
61°F
NW
4 mph
4 mph
2100
63°F
NW
6 mph
6 mph
September 16, wednesday
0000
63°F
N
9 mph
9 mph
0300
63°F
N
12 mph
12 mph
0600
61°F
N
9 mph
9 mph
0900
63°F
N
6 mph
6 mph
1200
73°F
E
9 mph
9 mph
