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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 09 December 2025

Today Tonight and Wednesday.

Wind south 25 knots veering to southwest 30 this morning then diminishing to west 20 this evening. Wind backing to southwest 15 near midnight then to south 20 overnight. Wind increasing to north 30 near noon Wednesday then backing to northwest 30 Wednesday evening.

Snow beginning this morning changing to scattered flurries this evening then to snow near midnight. Rain or snow overnight becoming scattered flurries Wednesday evening. Visibility 1 mile or less in precipitation.

Waves

Issued 03:00 AM EST 09 December 2025
Today Tonight and Wednesday. Waves 1.5 metres building to 2 to 3 this morning then subsiding to 1.5 early this evening. Waves building to 3 Wednesday afternoon.

Extended Forecast

Issued 03:00 AM EST 09 December 2025
Thursday Wind northwest 30 knots diminishing to northwest 20 in the afternoon.
Friday Wind west 15 knots backing to southwest 20 late in the day.
Saturday Wind southwest 20 knots veering to west 25.

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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

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

Ice Forecasts

Lake Huron

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 9 December 2025 Today Tonight and Wednesday At 3:00 a.m. EST today departing ridge located on a line
northeast-southwest over eastern Ontario.

At 3:00 a.m. EST today low 1006 mb located west of Lake Superior.
By 3:00 a.m. EST Wednesday dissipating low 1001 mb located over
northeastern Ontario.

By 3:00 a.m. EST Wednesday approaching low 989 mb located over
Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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