Avg weather in August
13 Hrs per day
46 mm per month
73 % avg
8 Mph avg


What’s the weather like in Toronto in August?

With a continental climate affected by the vast waters of Lake Ontario, Toronto experiences warm summers lasting from June until September, with sunny, often humid weather. August is mild and bright, making it a great month for you to explore the city. With a chance of rain along with hot sunshine, it’s worth packing for all weathers on your holiday to Toronto.


At this time of year the average temperature in Toronto is a mild 21°C, with highs of 28°C and lows of 16°C after dark. The city has around nine rainy days during the month of August, so make sure you pack a rain jacket in case of showers. At the start of the month, the days have around 14 and a half hours of daylight, with sunrise at 6.10am and sunset at 8.40pm. As August goes on the daylight hours get shorter and shorter, reducing to almost 13 hours by the end of the month.

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