Ontario - Canada weather in August 2025
Ontario - Canada weather in August 2025
Day
26 °C
Night
15 °C
Sea
14 °C
Precipitation
79 mm
in month
Rainy days
10 days
in month
Daylight
14 hours
average
Sunshine
8 hours
average
Humidity
73 %
Day
26 °C
Night
15 °C
Sea
14 °C
Precipitation
79 mm
in month
Rainy days
10 days
in month
Daylight
14 hours
average
Sunshine
8 hours
average
Humidity
73 %
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Weather overview and FAQs
Weather overview
In August in Ontario, the average air temperature ranges from 26 °C (78 °F) during the day to 15 °C (60 °F) at night. There are 10 days of rain on average, where the rainfall is 79 mm (3.10 in).
Is August a good month to visit Ontario?
In August in Ontario, there are ideal conditions for a vacation. The daily temperatures in this month reach pleasant 26 °C (78 °F). There are only 10 days of rain in the whole month, so you can leave your umbrella at home. The temperature of 15 °C (60 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the air temperature in August in Ontario at night?
The average night temperature in Ontario in August is 15 °C (60 °F). This temperature is pleasant for a wide range of evening, night, and morning activities from sports to sitting outside in restaurants or evening walks.
What temperature can I expect during the day in August in Ontario?
In Ontario in August, the average daily temperatures will be 26 °C (78 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
How many sunny hours can I expect in August in Ontario?
In Ontario in August, you can expect around 8 hours of sunshine.
How many days of precipitation on average can I expect in Ontario in August?
There are 10 days, which are rainy in August in Ontario, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.3 days of the week, or in general - 33 % days.
What is the rainfall intensity in August in Ontario?
In Ontario in August, there is 79 mm (3.10 in) rainfall, which means on average 3 mm (0.10 in) rainfall per day.
How long is the day (from dawn till dusk) in Ontario in August?
The length of daylight in Ontario in August is 14 hours.
What is the temperature trend in August in Ontario?
During August in Ontario, the day temperatures are decreasing - from 26 °C (79 °F) at the beginning of the month to 24 °C (75 °F) at the end of the month.
Is the weather in Ontario warmer in August than in July?
No, August is not warmer in Ontario than July.
Is Ontario rainier in August than in July?
No, August in Ontario is not a rainier month than July.
What level of humidity is to expect in Ontario in August?
Humidity in Ontario in August is 73 %.
How windy is Ontario in August?
An average wind scale that can be expected in Ontario in August is 3. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.