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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 25 January 2026

Today Tonight and Monday.

Wind east 15 knots increasing to southeast 25 early this morning then backing to east 25 near noon. Wind backing to northeast 20 this evening then to northwest 15 Monday morning. Wind increasing to northwest 20 Monday afternoon then backing to west 25 Monday evening.

Flurries changing to snow near noon then to scattered flurries near midnight. Visibility 1 mile or less in precipitation.

Freezing spray warning in effect.

Risk of freezing spray today. Freezing spray beginning late this afternoon and ending early Monday morning. Risk of freezing spray early Monday evening. Freezing spray beginning late Monday evening.

Waves

Issued 03:00 AM EST 25 January 2026
Today Tonight and Monday. Waves 0.5 to 1 metre building to 1.5 this morning and to 2 this afternoon. Waves subsiding to 1.5 Monday morning then building to 2 Monday evening.

Extended Forecast

Issued 03:00 AM EST 25 January 2026
Tuesday Wind west 25 knots backing to southwest 30 in the morning.
Wednesday Wind northwest 20 knots.
Thursday Wind northwest 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

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

Ice Forecasts

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

Warnings (In effect)

Freezing spray warning in effect

Western Lake Ontario

Issued 03:00 AM EST 25 January 2026

Moderate or severe freezing spray is 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 25 January 2026 Today Tonight and Monday At 3:00 a.m. EST today ridge from 1042 mb high located over Lake
Michigan to Vermont.
By 3:00 a.m. EST Monday ridge from 1040 mb high located on a line
northeast-southwest over Lake Superior.

At 3:00 a.m. EST today dissipating low located over Lake Superior.

At 3:00 a.m. EST today low 1008 mb located near Texas.
By 3:00 a.m. EST Monday low 1004 mb located east of New York State.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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