Lake Ontario Weather

Environment Canada

• Extended Forecast – Western Lake Ontario
  Saturday: Wind northwest 25 knots.Sunday: Wind light becoming southwest 15 knots late in the day.Monday: Wind southwest 25 knots increasing to southwest 30.Issued 03:00 AM EDT 30 October 2025
• Forecast for Today Tonight and Friday. – Western Lake Ontario
  Wind east 15 knots increasing to northeast 20 this morning then backing to north 20 near midnight. Wind backing to northwest 25 Friday morning then increasing to northwest 30 near noon Friday. Rain beginning early this morning changing to scattered showers Friday evening. Issued 03:00 AM EDT 30 October 2025
• Waves for Today Tonight and Friday. – Western Lake Ontario
  Waves 0.5 to 1 metre building to 2 to 3 near noon then subsiding to 1.5 overnight. Waves building to 2 Friday afternoon.Issued 03:00 AM EDT 30 October 2025
• STRONG WIND WARNING IN EFFECT, Western Lake Ontario
  Issued 03:00 AM EDT 30 October 2025
• Extended Forecast – Eastern Lake Ontario
  Saturday: Wind northwest 25 knots.Sunday: Wind light becoming southwest 15 knots late in the day.Monday: Wind southwest 25 knots increasing to southwest 30.Issued 03:00 AM EDT 30 October 2025

WindFinder – Cobourg