Measurements:
°C
°F
CURRENT WEATHER
01:32
Montreal
52°F
S 9 mph
Feels like: 48°F
Precip: 26%
World Resorts Canada Montreal Weather

7 Day Weather Forecast

09.29
tue
DAY
58°F
S 6 mph
precip
19%
NIGHT
56°F
N 3 mph
precip
11%
09.30
wed
DAY
64°F
NE 4 mph
precip
15%
NIGHT
62°F
N 6 mph
precip
23%
10.01
thu
DAY
64°F
N 8 mph
precip
71%
NIGHT
64°F
NE 9 mph
precip
31%
10.02
fri
DAY
62°F
E 4 mph
precip
83%
NIGHT
48°F
E 9 mph
precip
3%
10.03
sat
DAY
52°F
SE 9 mph
precip
1%
NIGHT
48°F
NE 4 mph
precip
5%
10.04
sun
DAY
58°F
NW 11 mph
precip
10%
NIGHT
50°F
NW 14 mph
precip
85%
10.05
mon
DAY
54°F
NW 6 mph
precip
77%
NIGHT
52°F
NE 14 mph
precip
13%

Montreal Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Montreal was 19.6°F. The maximum and minimum values were 16.5°F and 22.5°F respectively.

Montreal on the Weather Map

Best Time to Visit Montreal
The most sunny months:
July 14 days
August 14 days
June 13 days
The most warm months:
July 82.6 °F
August 80.2 °F
June 75.5 °F
Warmest sea temperature:
August 74.4 °F
July 74.4 °F
September 68.6 °F
The most cold months:
January 16.2 °F
February 19.0 °F
December 25.0 °F
The most rainy months:
June 5 days
May 5 days
July 5 days
The most windy months:
April 9 mph
March 9 mph
February 9 mph
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