Language selection

Weather shortcuts

Western Lake Ontario

Forecast

Marine Forecast

Issued 06:30 PM EDT 05 October 2026

Tonight and Tuesday.

Strong wind warning in effect.

Wind northwest 20 knots diminishing to northwest 15 near midnight and to northwest 10 early Tuesday morning. Wind backing to southwest 10 near noon Tuesday then increasing to southwest 15 Tuesday evening.

Waves

Issued 06:30 PM EDT 05 October 2026
Tonight and Tuesday. Waves 1 metre subsiding to 0.5 or less Tuesday morning then building to 1 Tuesday evening.

Extended Forecast

Issued 06:30 PM EDT 05 October 2026
Wednesday Wind southwest 20 knots.
Thursday Wind west 20 knots.
Friday Wind west 15 knots increasing to west 20.

Stay connected

ATOM

Weather Conditions

Skip Image

Zoom-in to make a selection

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

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Western Lake Ontario

Issued 6:30 PM EDT 05 October 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 5 October 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight ridge located on a line north-south
over Wisconsin.
By 6:30 p.m. EDT Tuesday ridge located on a line north-south over
eastern Pennsylvania.

At 6:30 p.m. EDT tonight trough located on a line north-south over
eastern Saskatchewan.
By 6:30 p.m. EDT Tuesday trough located on a line north-south over
Lake Nipigon.

Great Lakes - Lake Huron Area

Another Region

Date modified: