Lake Ontario Weather

Environment Canada

• Extended Forecast – Western Lake Ontario
  Tuesday: Wind northeast 15 knots diminishing to light in the afternoon.Wednesday: Wind light.Thursday: Wind light becoming southwest 15 knots.Issued 03:00 AM EDT 20 July 2025
• Waves for Today Tonight and Monday. – Western Lake Ontario
  Waves 0.5 metres or less building to 0.5 to 1 this morning then subsiding to 0.5 or less near noon Monday.Issued 03:00 AM EDT 20 July 2025
• Forecast for Today Tonight and Monday. – Western Lake Ontario
  Wind light becoming northwest 15 knots early this morning then veering to north 15 near midnight. Wind diminishing to north 10 Monday morning then becoming variable 10 Monday afternoon. Showers ending near noon with a risk of thunderstorms. Issued 03:00 AM EDT 20 July 2025
• Extended Forecast – Eastern Lake Ontario
  Tuesday: Wind northeast 15 knots diminishing to light in the afternoon.Wednesday: Wind light.Thursday: Wind light becoming southwest 15 knots.Issued 03:00 AM EDT 20 July 2025
• Waves for Today Tonight and Monday. – Eastern Lake Ontario
  Waves 0.5 metres or less building to 0.5 to 1 near noon then subsiding to 0.5 or less near noon Monday.Issued 03:00 AM EDT 20 July 2025

WindFinder – Cobourg