Toronto weather in August
Long-run climate averages for Toronto, Ontario in August, plus what the forecast models say for the days ahead.
In August, Toronto averages 23°C by day and 15°C at night. It is the wettest month of the year here.
August in Toronto averages a daytime high of 23°C and an overnight low of 15°C, which reads as warm for this part of the world. It is among the three warmest months of the year here. It is also the wettest month, so build rain into any plan. Across the whole year Toronto sees roughly 924 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like - for that, see the live Toronto forecast with every model compared and how much they currently agree.
Toronto weather by month
what to expect in Toronto through the year, 1991-2020 averagesHere is Toronto's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Toronto by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Toronto, scoring 88/100 on our CheckWeather Score, ahead of the American at 85. See the full CA accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is Toronto in August?
Is August a good time to visit Toronto?
Does it rain a lot in Toronto in August?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .