Eastern Lake Ontario


Marine Forecast

Issued 06:30 PM EDT 22 October 2017

Tonight and Monday.

Strong wind warning in effect.

Wind southeast 10 knots increasing to south 15 this evening and to south 20 near midnight. Wind diminishing to southeast 15 Monday afternoon then increasing to southeast 20 Monday evening.

Chance of showers Monday afternoon and evening.


Issued 06:30 PM EDT 22 October 2017
Tonight and Monday. Waves one half metre or less building to one late overnight then subsiding to one half metre Monday evening.

Extended Forecast

Issued 06:30 PM EDT 22 October 2017
Tuesday Wind southeast 25 knots veering to southwest 25 in the morning.
Wednesday Wind southwest 25 knots.
Thursday Wind west 15 knots.

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 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 Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Port Weller St. Catharines Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport Killarney Western Islands Cove Island Long Point Port Colborne Erieau Point Pelee
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 27 April 2017 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 6:30 PM EDT 22 October 2017

'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 6:30 PM EDT 22 October 2017 Tonight and Monday At 6:30 p.m. EDT tonight low 974 mb located over eastern Hudson Bay.
By 6:30 p.m. EDT Monday low 975 mb located north of Hudson Bay.

By 6:30 p.m. EDT Monday approaching low 995 mb located over
southwestern Ohio.

At 6:30 p.m. EDT tonight cold front located on a line north-south
over Sault Ste. Marie.
By 6:30 p.m. EDT Monday cold front located on a line
northeast-southwest over central Lake Huron.

Great Lakes - Lake Huron Area

Another Region

What we are doing


Summer 2017: Significant weather across Canada

By analyzing weather events, ECCC is collecting more information as to how our climate is changing.

Date modified: