Lake Ontario Weather

Environment Canada

• Waves for Today Tonight and Monday. – Western Lake Ontario
  Waves 0.5 metres or less subsiding to less than 0.5 Monday afternoon.Issued 10:30 AM EDT 15 June 2025
• Forecast for Today Tonight and Monday. – Western Lake Ontario
  Wind northeast 10 knots becoming light near noon Monday. Fog patches forming Monday afternoon. Issued 10:30 AM EDT 15 June 2025
• Waves for Today Tonight and Monday. – Eastern Lake Ontario
  Waves 0.5 metres or less.Issued 10:30 AM EDT 15 June 2025
• Forecast for Today Tonight and Monday. – Eastern Lake Ontario
  Wind northeast 10 knots becoming light early this evening then becoming east 10 Monday morning. Fog patches forming Monday morning. Issued 10:30 AM EDT 15 June 2025
• Extended Forecast – Western Lake Ontario
  Tuesday: Wind southeast 15 knots.Wednesday: Wind light.Thursday: Wind southwest 20 knots.Issued 03:00 AM EDT 15 June 2025

WindFinder – Cobourg