The best time to visit Mississauga
Month-by-month climate averages for Mississauga, Ontario, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Mississauga is usually May, June, July and September, when daytime highs sit in the pleasant 16-26°C range and the heaviest August rain is behind you.
Mississauga is warmest in July (highs near 25°C) and coldest in February (lows around -10°C), with roughly 935 mm of precipitation across the year and August the wettest month. The sweet spot for most visitors is May, June, July and September. Expect overnight frost in January, February, March, November and December.
These are long-run averages. For the actual days you are travelling, check the live Mississauga forecast - and note how much the models agree, because that tells you how much to trust it.
Mississauga weather by month
what to expect in Mississauga through the year, 1991-2020 averagesHere is Mississauga'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 Mississauga by season.