Lac Saint-Louis
Lake Broad river widening on the Saint Lawrence near Montreal
Part of the St. Lawrence system west of Montreal, Lac Saint‑Louis hosts sailing, pleasure boating and waterfront parks; anglers and weekend sailors use its marinas and shoreline paths.
Lac Saint-Louis is a lake on the St. Lawrence River system in southwestern Quebec, Canada, immediately adjacent to the Montreal metropolitan area.
The body of water has long been part of the St. Lawrence waterways used for transport and local industry; municipalities around its shores developed in the 19th and 20th centuries as part of Montreal’s suburban expansion.
Located immediately downstream and southwest of the Island of Montreal in Quebec, the lake is bordered by multiple Montreal-area municipalities and lies within the St. Lawrence valley.
- Recreation: Popular for recreational boating and rowing, with multiple municipal waterfront parks and marinas along its shores.
- Setting: Part of the St. Lawrence River system, located adjacent to the Island of Montreal and several suburban municipalities in southwestern Quebec.
How to Get to Lac Saint-Louis #
Lac Saint‑Louis is about 20-30 km west of downtown Montreal. From the city, drive or take highways toward Dorval, Lachine and the West Island; multiple parks and marinas provide public access. Public transit connections reach the surrounding suburbs, but a car is more convenient for lakeside exploration.
Tips for Visiting Lac Saint-Louis #
- If visiting from Montreal, combine a drive along Route 132 with a stop in Lachine to see the historic canal locks.
- For wind sports, head to the lake's western shores where shallows and winds favor windsurfing and kitesurfing.
- Avoid the main shipping lanes if paddling; the lake connects to the Saint Lawrence and can have commercial traffic.
Best Time to Visit Lac Saint-Louis #
An expansion of the Saint Lawrence River west of Montreal, Lac Saint‑Louis forms part of the island-dotted waterways near the city and is popular for boating and watersports.
Weather & Climate near Lac Saint-Louis #
Lac Saint-Louis's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -22°C to 23°C. Abundant rainfall (1076 mm/year), wettest in July.
January
January is the coldest month with highs of -9°C and lows of -22°C. Moderate rainfall (70 mm).
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February
February is freezing with highs of -7°C and lows of -20°C. Moderate rainfall (60 mm).
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March
March is freezing with highs of 0°C and lows of -14°C. Moderate rainfall (67 mm).
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April
April is cold with highs of 6°C and lows of -5°C. Moderate rainfall (71 mm).
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May
May is cold with highs of 16°C and lows of 2°C. Regular rainfall (92 mm).
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June
June is cool with highs of 21°C and lows of 8°C. Significant rainfall (113 mm).
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July
July is cool with highs of 23°C and lows of 11°C. The wettest month with heavy rain (119 mm).
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August
August is cool with highs of 22°C and lows of 10°C. Significant rainfall (108 mm).
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September
September is cool with highs of 17°C and lows of 5°C. Significant rainfall (106 mm).
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October
October is cold with highs of 9°C and lows of 0°C. Regular rainfall (95 mm).
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November
November is freezing with highs of 2°C and lows of -7°C. Regular rainfall (95 mm).
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December
December is freezing with highs of -6°C and lows of -16°C. Regular rainfall (80 mm).
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