Lake Ontario Weather

Environment Canada

• Waves for Today Tonight and Friday. – Western Lake Ontario
  Waves 1 metre subsiding to 0.5 or less Friday afternoon.Issued 03:00 AM EDT 31 July 2025
• Extended Forecast – Western Lake Ontario
  Saturday: Wind light becoming southwest 15 knots in the afternoon.Sunday: Wind light.Monday: Wind light.Issued 03:00 AM EDT 31 July 2025
• Forecast for Today Tonight and Friday. – Western Lake Ontario
  Wind northeast 15 knots backing to north 15 Friday morning then diminishing to north 10 near noon Friday. Scattered showers ending this afternoon with a risk of thunderstorms. Issued 03:00 AM EDT 31 July 2025
• Extended Forecast – Eastern Lake Ontario
  Saturday: Wind light becoming southwest 15 knots in the afternoon.Sunday: Wind light.Monday: Wind light.Issued 03:00 AM EDT 31 July 2025
• Waves for Today Tonight and Friday. – Eastern Lake Ontario
  Waves 1.5 metres subsiding to 0.5 to 1 this afternoon and to 0.5 or less near noon Friday.Issued 03:00 AM EDT 31 July 2025

WindFinder – Cobourg