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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 13 August 2026

Tonight and Friday.

Wind west 10 knots becoming light this evening then becoming northeast 15 early Friday morning. Wind diminishing to north 10 near noon Friday then veering to east 10 Friday evening.

Scattered showers Friday evening with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 13 August 2026
Tonight and Friday. Waves 0.5 metres or less building to 0.5 to 1 Friday morning then subsiding to 0.5 or less Friday afternoon.

Extended Forecast

Issued 06:30 PM EDT 13 August 2026
Saturday Wind northeast 15 knots diminishing to light in the morning.
Sunday Wind southeast 15 knots becoming northwest 15 late in the day.
Monday Wind northwest 15 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Hamilton Munro Int'l Airport CFB Trenton Erieau Toronto City Centre Airport Point Pelee Peterborough Municipal Airport Burlington Lift Bridge Point Petre Cobourg Oshawa Executive Airport South Lake Huron - 45149 Port Colborne Brockville 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 Windsor Airport Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Welland-Pelham Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Sarnia Chris Hadfield Airport Vineland Station Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Tobermory
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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 13 August 2026 Tonight and Friday At 6:30 p.m. EDT tonight departing trough located on a line
northeast-southwest over New England.

At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over Lake Superior.
By 6:30 p.m. EDT Friday ridge located on a line northwest-southeast
over northern Ontario.

By 6:30 p.m. EDT Friday approaching trough located over North
Dakota to Ohio.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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