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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 25 May 2025

Tonight and Monday.

Wind light tonight and Monday.

Scattered showers ending this evening with a risk of thunderstorms. Scattered showers Monday afternoon. Fog patches forming after midnight and dissipating Monday morning.

Extended Forecast

Issued 06:00 AM EDT 25 May 2025
Tuesday Wind light.
Wednesday Wind light.
Thursday Wind southerly 10 to 15 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
Legend:
buoy Buoy
land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 25 May 2025 Tonight and Monday At 3:00 p.m. EDT today trough located from Cornwall to Nova Scotia.
By 1:00 a.m. EDT Monday dissipating ridge located from New England
to Nova Scotia.

At 3:00 p.m. EDT today high 1029 mb located over northwestern
Ontario.
By 8:00 p.m. EDT Monday high 1027 mb located over western Quebec.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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