Eastern Lake Ontario
Forecast
Marine Forecast
Issued 06:30 PM EDT 12 June 2025
Tonight and Friday.
Wind west 15 knots diminishing to northwest 10 this evening then increasing to northeast 15 late overnight. Wind diminishing to northeast 10 near noon Friday.
Waves
Issued 06:30 PM EDT 12 June 2025
Tonight and Friday.
Waves 1 metre subsiding to 0.5 or less near midnight then
building to 0.5 to 1 early Friday morning. Waves subsiding to 0.5 or less Friday
afternoon.
Extended Forecast
Issued 06:30 PM EDT 12 June 2025
Saturday
Wind northeast 15 knots diminishing to light
late in the day.
Sunday
Wind light.
Monday
Wind light.
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 16 May 2025 Forecasts have ended for the season.Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 6:30 PM EDT 12 June 2025 Tonight and Friday At 6:30 p.m. EDT tonight high 1027 mb located over northwesternOntario.
By 6:30 p.m. EDT Friday high 1025 mb located near James Bay.
At 6:30 p.m. EDT tonight quasi-stationary cold front located on
a line east-west over Ohio.
Great Lakes - Lake Erie and Lake Ontario Area
Another Region
- Date modified: