This data the coastal Montreal water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in Montreal today is 19°C. Based on our historical data over a period of ten years, the warmest water in this day in Montreal was 22°C, and the coldest was recorded in 2017 at 16°C. Water temperature in Montreal is expected to drop to 18.3°C in the next 10 days. September average water temperature in Montreal is 18.1°C, the minimum temperature is 12°C, and the maximum is 23°C.
The swimming season in Montreal lasts from July to August. During those months, Montreal water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Montreal in winter reaches 3°C, in spring 7.2°C, in summer the average temperature rises to 20.7°C, and in autumn it is 11.6°C.
4 September 2025 |
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today temp |
19°C |
3 September 2025 |
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yesterday temp |
18°C |
Data in a table show Montreal temperature today (4 September 2025). For more information and forecast for a few days, go to the weather forecast Montreal.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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16.1°C | 14.6°C | 14.5°C | 19.7°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
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27.4°C | 27.6°C | 25.1°C | 20.7°C |
You may also be interested in other sections of our site for Montreal: Sunrise and Sunset
These figures shows the average, minimum and maximum monthly water temperature in Montreal. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Montreal on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
Month | Avr | Min | Max | |
---|---|---|---|---|
January | 3°C | 1°C | 4°C | cold |
Water temperature in Montreal in January | ||||
February | 3°C | 3°C | 4°C | cold |
Water temperature in Montreal in February | ||||
March | 3.1°C | 1°C | 6°C | cold |
Water temperature in Montreal in March | ||||
April | 5.6°C | 2°C | 12°C | cold |
Water temperature in Montreal in April | ||||
May | 13°C | 6°C | 21°C | cold |
Water temperature in Montreal in May | ||||
June | 18.7°C | 13°C | 25°C | cold |
Water temperature in Montreal in June | ||||
July | 22.1°C | 17°C | 26°C | warm |
Water temperature in Montreal in July | ||||
August | 21.3°C | 17°C | 27°C | warm |
Water temperature in Montreal in August | ||||
September | 18.1°C | 12°C | 23°C | cold |
Water temperature in Montreal in September | ||||
October | 11.5°C | 3°C | 19°C | cold |
Water temperature in Montreal in October | ||||
November | 5.1°C | 3°C | 13°C | cold |
Water temperature in Montreal in November | ||||
December | 3.1°C | 1°C | 5°C | cold |
Water temperature in Montreal in December |