Lake Ontario Weather

Environment Canada

• Extended Forecast – Western Lake Ontario
  Saturday: Wind south 20 knots veering to southwest 25 late in the day.Sunday: Wind southwest 25 knots.Monday: Wind southwest 20 knots.Issued 06:30 PM EST 05 March 2026
• Waves for Tonight and Friday. – Western Lake Ontario
  Waves 1.5 metres subsiding to 1 Friday afternoon.Issued 06:30 PM EST 05 March 2026
• Forecast for Tonight and Friday. – Western Lake Ontario
  Wind northeast 20 knots veering to east 20 late overnight then diminishing to east 15 near noon Friday. Wind diminishing to variable 10 Friday evening. Periods of rain changing to periods of drizzle overnight and ending near noon Friday. Periods of rain Friday evening. Issued 06:30 PM EST 05 March 2026
• Extended Forecast – Eastern Lake Ontario
  Saturday: Wind south 20 knots veering to southwest 25 late in the day.Sunday: Wind southwest 25 knots.Monday: Wind southwest 20 knots.Issued 06:30 PM EST 05 March 2026
• Waves for Tonight and Friday. – Eastern Lake Ontario
  Over open water waves 1 to 1.5 metres subsiding to 1 late overnight.Issued 06:30 PM EST 05 March 2026

WindFinder – Cobourg