Toronto weather in May
Long-run climate averages for Toronto, Ontario in May, plus what the forecast models say for the days ahead.
In May, Toronto averages 18°C by day and 9°C at night. The wettest month is usually April.
May in Toronto averages a daytime high of 18°C and an overnight low of 9°C, which reads as mild for this part of the world. Across the whole year Toronto sees roughly 969 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 yearHere 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 82/100 on our CheckWeather Score, ahead of the American at 80. See the full CA accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is Toronto in May?
Is May a good time to visit Toronto?
Does it rain a lot in Toronto in May?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .