Ontario weather in August 2024

Expect 25°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Ontario in August. Check more long-term weather averages for Ontario in August before you book your next holiday to Ontario in 2024/2025.

  • 25°C maximum daytime temperature in August in Ontario (Toronto)25
    25°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in August in Ontario (Toronto)10
    10 days with some rainfall
  • 15°C minimum night-time temperature in August in Ontario (Toronto)15
    15°C min night temperature
  • 14 hours of daylight per day in August in Ontario (Toronto)14
    14 hours of daylight per day
  • Low heat & humidity in August in Ontario (Toronto)L
    Low heat & humidity
  • 83 mm monthly rainfall in August in Ontario (Toronto)83
    83 mm of monthly rainfall
  • UV (maximum) index 7 (High) in August in Ontario (Toronto)7
    7 (High) UV index
  • 21°C sea temperature in August in Ontario (Toronto)21
    21°C sea temperature

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