Eastern Lake Ontario
Forecast
Marine Forecast
Issued 10:30 AM EDT 11 May 2025
Today Tonight and Monday.
Wind variable 10 knots becoming light early this evening then becoming east 10 Monday evening.
Waves
Issued 10:30 AM EDT 11 May 2025
Today Tonight and Monday.
Waves 0.5 to 1 metre subsiding to 0.5 or less near
noon.
Extended Forecast
Issued 03:00 AM EDT 11 May 2025
Tuesday
Wind light becoming southeast 15 knots in the
afternoon.
Wednesday
Wind southeast 15 knots.
Thursday
Wind light.
Ice Forecast*
Issued 12:00 PM EDT 11 May 2025 Today Tonight and Monday Ice free.
*Ice Forecast and Warnings also apply to U.S. waters
Stay connected
Weather Conditions
Zoom-in to make a selection

Legend:


Ice Conditions
*Ice Forecast and Warnings also apply to U.S. waters
Ice Forecasts
Issued 12:00 PM EDT 11 May 2025 Today Tonight and MondayIce Coverage
Ice free.
Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 10:30 AM EDT 11 May 2025 Today Tonight and Monday At 10:30 a.m. EDT today high 1028 mb located over central Ontario.By 10:30 a.m. EDT Monday departing high 1028 mb located over the
East Coast of the U.S.
At 10:30 a.m. EDT today quasi-stationary trough located on a line
east-west over northern Ontario.
Great Lakes - Lake Huron Area
Another Region
- Date modified: