Language selection

My Weather Profile Weather Topics  | 

Georgian Bay


Marine Forecast

Issued 03:00 AM EDT 17 September 2021

Today Tonight and Saturday.

Strong wind warning in effect.

Wind south 15 knots increasing to northwest 20 this evening then diminishing to north 15 Saturday morning. Wind diminishing to north 10 near noon Saturday then becoming light Saturday evening.

Scattered showers tonight with a risk of thunderstorms.


Issued 03:00 AM EDT 17 September 2021
Today Tonight and Saturday. Waves one half to one metre building to one to one and one half metres near midnight then subsiding to one half to one metre Saturday morning. Waves subsiding to one half metre or less Saturday afternoon.

Extended Forecast

Issued 06:30 PM EDT 16 September 2021
Saturday Wind northwest 15 knots diminishing to light in the morning.
Sunday Wind light.
Monday Wind light.

Stay connected


Weather Conditions

Skip Image

Zoom-in to make a selection

Map of Great Lakes - Lake Huron marine weather areas N Huron - 45003 W Erie - 45005 S Huron - 45008 Lake Ontario - 45012 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 Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
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 9 May 2021 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 03:00 AM EDT 17 September 2021

'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 or Weatheradio stations.


Technical Marine Synopsis

Issued 3:00 AM EDT 17 September 2021 Today Tonight and Saturday At 3:00 a.m. EDT today cold front located on a line
northeast-southwest over western Lake Superior.
By 3:00 a.m. EDT Saturday cold front located on a line
northeast-southwest over southern Ontario.

By 3:00 a.m. EDT Saturday approaching high 1025 mb located over

Great Lakes - Lake Huron Area

Another Region

What we are doing

Date modified: