Lake Ontario Weather

Environment Canada

• Extended Forecast – Western Lake Ontario
  Monday: Wind light becoming east 15 knots in the morning.Tuesday: Wind north 15 knots backing to west 15.Wednesday: Wind light.Issued 03:00 AM EDT 20 June 2026
• Forecast for Today Tonight and Sunday. – Western Lake Ontario
  Wind west 15 knots backing to southwest 15 early this morning then increasing to southwest 20 near noon. Wind diminishing to southwest 15 early this evening and to west 10 near midnight. Wind backing to southwest 10 Sunday morning then becoming light Sunday afternoon. Scattered showers this evening. Issued 03:00 AM EDT 20 June 2026
• Waves for Today Tonight and Sunday. – Western Lake Ontario
  Waves 0.5 to 1 metre subsiding to 0.5 or less this evening.Issued 03:00 AM EDT 20 June 2026
• STRONG WIND WARNING IN EFFECT, Western Lake Ontario
  Issued 03:00 AM EDT 20 June 2026
• Extended Forecast – Eastern Lake Ontario
  Monday: Wind light becoming east 15 knots in the morning.Tuesday: Wind north 15 knots backing to west 15.Wednesday: Wind light.Issued 03:00 AM EDT 20 June 2026

WindFinder – Cobourg