Mississauga and Toronto have similar daytime temperatures, and both get similar annual rainfall.
Mississauga is at its warmest in July and coolest in January, while Toronto peaks in July and bottoms out in January.
Both collect a similar amount of rain over the year — 685 mm (27 in) in Mississauga and 685 mm (27 in) in Toronto. The most comfortable time to visit is June, July and August in Mississauga and June, July and August in Toronto.
| Mississauga | Metric | Toronto |
|---|---|---|
| 🌡️ Temperature | ||
| 18°C | 🌡️Average daytime high | 18°C |
| -0.5°C | 🌙Average nighttime low | -0.5°C |
| July | 🔥Hottest month | July |
| January | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 685 mm | 🌧️Annual rainfall | 685 mm |
| July | ☔Wettest month | July |
| February | 🏜️Driest month | February |
| 💨 Climate | ||
| 78% | 💧Average humidity | 78% |
| 4.1 m/s | 💨Average wind speed | 4.1 m/s |
Overnight, Mississauga typically falls to around -0.5°C (31.1°F) while Toronto settles near -0.5°C (31.1°F).
Mississauga is hottest in July and coldest in January, whereas Toronto peaks in July and is coolest in January.
Mississauga sees the most rain in July and the least in February; Toronto is wettest in July and driest in February.
Mississauga feels the more humid of the two, averaging 78% relative humidity against 78%.
For Toronto, the pick of the year is June, July and August.
Month by month, here is the coldest night, the average day and the hottest afternoon each city can expect. Switch Compare to read rainfall, humidity, wind or solar instead, and Period to move between the long-term 45-year average and any single year — the shading is a quick warm-to-cool guide.
| Month | Mississauga | Toronto | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | -13.9 | -3.7❄️ | 6.5 | -13.9 | -3.7❄️ | 6.5 |
| February | -13.4 | -3.3 | 6.8 | -13.4 | -3.3 | 6.8 |
| March | -10.3 | 0.8 | 12 | -10.3 | 0.8 | 12 |
| April | -3.1 | 6.7 | 16.4 | -3.1 | 6.7 | 16.4 |
| May | 2.3 | 12.5 | 22.6 | 2.3 | 12.5 | 22.6 |
| June | 7.8 | 17.2 | 26.5 | 7.8 | 17.2 | 26.5 |
| July | 13 | 20.7🔥 | 28.5 | 13 | 20.7🔥 | 28.5 |
| August | 13.3 | 20.6 | 28 | 13.3 | 20.6 | 28 |
| September | 8.5 | 17.1 | 25.7 | 8.5 | 17.1 | 25.7 |
| October | 2.5 | 11.4 | 20.3 | 2.5 | 11.4 | 20.3 |
| November | -3.3 | 5.4 | 14 | -3.3 | 5.4 | 14 |
| December | -9.2 | -0.3 | 8.6 | -9.2 | -0.3 | 8.6 |
| Annual Avg | -0.5 | 8.8 | 18 | -0.5 | 8.8 | 18 |
Min / mean / max temperature (°C). 🔥 marks each city's hottest month, ❄️ its coldest; shading runs cool blue to warm red.
The same figures plotted out, so the shape of a typical year is easier to see than in a grid. Where the two lines run close together Mississauga and Toronto feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Mississauga Toronto
See how Mississauga and Toronto stack up against other cities. Swipe for more.
Choose which city to keep, then search for any other city in our database — we'll build the comparison for you.
Quick answers to the questions people ask most when comparing Mississauga and Toronto — each drawn straight from the climate figures above.
Mississauga and Toronto are about equally warm. Daytime highs average 18°C (64.4°F) in Mississauga and 18°C (64.4°F) in Toronto, so neither is clearly the warmer choice over the year.
Mississauga is hottest in July, averaging highs of about 28.5°C (83.2°F), while Toronto peaks in July at around 28.5°C (83.2°F). That makes Mississauga the hotter of the two at the height of summer.
Mississauga gets colder. In its coldest month (January) overnight lows average about -13.9°C (7°F), compared with -13.9°C (7°F) at the low point of the year in Toronto.
They get a similar amount of rain over a year — about 685 mm (27 in) in Mississauga and 685 mm (27 in) in Toronto. Mississauga is wettest in July and driest in February; Toronto is wettest in July and driest in February.
Humidity is similar in both, averaging around 78% in Mississauga and 78% in Toronto across the year.
The most comfortable months in Mississauga are June, July and August, when average temperatures are at their mildest.
Toronto is at its most pleasant around June, July and August, based on the mildest average temperatures of the year.
Both have a similar seasonal range — around 24.4°C (43.9°F) between the coldest and hottest months — so neither climate is noticeably more extreme than the other.
Every figure on this page is calculated from NASA POWER satellite climate data spanning 1981–2025 (45 years). The averages describe the long-term climate of Mississauga and Toronto, not a single year's weather or a short-range forecast.
