Lake Ontario Weather

Environment Canada

• Extended Forecast – Western Lake Ontario
  Friday: Wind light.Saturday: Wind light becoming southwest 15 knots.Sunday: Wind west 15 knots.Issued 06:30 PM EDT 05 August 2026
• Waves for Tonight and Thursday. – Western Lake Ontario
  Waves 0.5 metres or less.Issued 06:30 PM EDT 05 August 2026
• Forecast for Tonight and Thursday. – Western Lake Ontario
  Wind southeast 10 knots becoming light near midnight. Wind light Thursday. Scattered showers overnight with a risk of thunderstorms. Scattered showers Thursday afternoon and evening with a risk of thunderstorms. Issued 06:30 PM EDT 05 August 2026
• Extended Forecast – Eastern Lake Ontario
  Friday: Wind light.Saturday: Wind light becoming southwest 15 knots.Sunday: Wind west 15 knots.Issued 06:30 PM EDT 05 August 2026
• Waves for Tonight and Thursday. – Eastern Lake Ontario
  Waves 0.5 metres or less.Issued 06:30 PM EDT 05 August 2026

WindFinder – Cobourg