Lake Ontario Weather

Environment Canada

• Extended Forecast – Western Lake Ontario
  Wednesday: Wind light.Thursday: Wind light.Friday: Wind southwest 15 knots diminishing to light late in the day.Issued 03:00 AM EDT 22 June 2026
• Waves for Today Tonight and Tuesday. – Western Lake Ontario
  Waves 0.5 metres or less.Issued 03:00 AM EDT 22 June 2026
• Forecast for Today Tonight and Tuesday. – Western Lake Ontario
  Wind light becoming northeast 10 knots near noon then becoming light near midnight. Wind becoming west 10 Tuesday morning. Periods of rain today. Issued 03:00 AM EDT 22 June 2026
• Extended Forecast – Eastern Lake Ontario
  Wednesday: Wind light.Thursday: Wind light.Friday: Wind southwest 15 knots diminishing to light late in the day.Issued 03:00 AM EDT 22 June 2026
• Waves for Today Tonight and Tuesday. – Eastern Lake Ontario
  Waves 0.5 metres or less building to 0.5 to 1 Tuesday morning.Issued 03:00 AM EDT 22 June 2026

WindFinder – Cobourg