Lake Ontario Weather

Environment Canada

• Extended Forecast – Western Lake Ontario
  Saturday: Wind west 20 knots diminishing to light late in the day.Sunday: Wind light.Monday: Wind light increasing to northeast 20 knots.Issued 03:00 AM EDT 18 June 2026
• Forecast for Today Tonight and Friday. – Western Lake Ontario
  Wind southwest 25 knots increasing to southwest 30 this morning then veering to west 25 early this evening. Wind backing to southwest 20 Friday morning then diminishing to west 15 Friday evening. Rain changing to scattered showers this morning and ending this evening. Scattered showers Friday late in the day. Risk of thunderstorms today and […]
• Waves for Today Tonight and Friday. – Western Lake Ontario
  Waves 0.5 to 1 metre building to 1.5 early this morning and to 2 near noon. Waves subsiding to 1.5 this evening and to 1 overnight.Issued 03:00 AM EDT 18 June 2026
• STRONG WIND WARNING IN EFFECT, Western Lake Ontario
  Issued 03:00 AM EDT 18 June 2026
• Extended Forecast – Eastern Lake Ontario
  Saturday: Wind west 20 knots diminishing to light late in the day.Sunday: Wind light.Monday: Wind light increasing to northeast 20 knots.Issued 03:00 AM EDT 18 June 2026

WindFinder – Cobourg