Melbourne is 8.1°C (14.6°F) warmer by day, Melbourne has 7.7°C (13.9°F) warmer nights, Melbourne gets 67 mm (2.6 in) more rain a year.
Melbourne is at its warmest in January and coolest in July, while Mississauga peaks in July and bottoms out in January. Month for month, Melbourne is the warmer of the two in 8 of 12 months.
Melbourne is the wetter of the two, collecting 752 mm (29.6 in) of rain a year against 685 mm (27 in) in Mississauga. The most comfortable time to visit is March, November and December in Melbourne and June, July and August in Mississauga.
| Melbourne | Metric | Mississauga |
|---|---|---|
| 🌡️ Temperature | ||
| 26.1°C | 🌡️Average daytime high | 18°C |
| 7.2°C | 🌙Average nighttime low | -0.5°C |
| January | 🔥Hottest month | July |
| July | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 752 mm | 🌧️Annual rainfall | 685 mm |
| October | ☔Wettest month | July |
| February | 🏜️Driest month | February |
| 💨 Climate | ||
| 75% | 💧Average humidity | 78% |
| 3.3 m/s | 💨Average wind speed | 4.1 m/s |
Overnight, Melbourne typically falls to around 7.2°C (45°F) while Mississauga settles near -0.5°C (31.1°F).
Melbourne is hottest in January and coldest in July, whereas Mississauga peaks in July and is coolest in January.
Melbourne sees the most rain in October and the least in February; Mississauga is wettest in July and driest in February.
Mississauga feels the more humid of the two, averaging 78% relative humidity against 75%.
For Mississauga, 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 | Melbourne | Mississauga | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 11.2 | 23.8🔥 | 36.5 | -13.9 | -3.7❄️ | 6.5 |
| February | 11.5 | 23.4 | 35.3 | -13.4 | -3.3 | 6.8 |
| March | 10.6 | 21.5 | 32.5 | -10.3 | 0.8 | 12 |
| April | 8.3 | 17.6 | 27 | -3.1 | 6.7 | 16.4 |
| May | 5.9 | 13.7 | 21.6 | 2.3 | 12.5 | 22.6 |
| June | 3.8 | 10.3 | 16.9 | 7.8 | 17.2 | 26.5 |
| July | 3 | 9.3❄️ | 15.6 | 13 | 20.7🔥 | 28.5 |
| August | 3.6 | 10.5 | 17.4 | 13.3 | 20.6 | 28 |
| September | 4.6 | 12.8 | 21 | 8.5 | 17.1 | 25.7 |
| October | 6 | 15.9 | 25.7 | 2.5 | 11.4 | 20.3 |
| November | 7.7 | 19 | 30.3 | -3.3 | 5.4 | 14 |
| December | 9.6 | 21.6 | 33.6 | -9.2 | -0.3 | 8.6 |
| Annual Avg | 7.2 | 16.6 | 26.1 | -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 Melbourne and Mississauga feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Melbourne Mississauga
See how Melbourne and Mississauga 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 Melbourne and Mississauga — each drawn straight from the climate figures above.
Melbourne is the warmer of the two. It averages daytime highs of 26.1°C (79°F) against 18°C (64.4°F) in Mississauga — roughly 8.1°C (14.6°F) warmer by day. Nights are milder in Melbourne, with average lows of 7.2°C (45°F) versus -0.5°C (31.1°F).
Melbourne is hottest in January, averaging highs of about 36.5°C (97.6°F), while Mississauga peaks in July at around 28.5°C (83.2°F). That makes Melbourne 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 3°C (37.3°F) at the low point of the year in Melbourne.
Melbourne is the wetter city, collecting about 752 mm (29.6 in) of rain a year versus 685 mm (27 in) in Mississauga. Melbourne is wettest in October and driest in February; Mississauga is wettest in July and driest in February.
Mississauga is the more humid of the two, averaging 78% relative humidity over the year against 75% in Melbourne.
The most comfortable months in Melbourne are March, November and December, when average temperatures are at their mildest.
Mississauga is at its most pleasant around June, July and August, based on the mildest average temperatures of the year.
Melbourne is the warmer city in 8 of the 12 months of the year. The gap is widest in January, about 27.5°C (49.5°F), and narrowest in May, about 1.2°C (2.2°F).
Mississauga has the bigger seasonal swing, about 24.4°C (43.9°F) between its coldest and hottest months versus 14.5°C (26.1°F) in Melbourne — so Melbourne has the steadier, more even climate.
It depends what matters most to you: choose Melbourne for warmer weather, pick Mississauga if you prefer drier conditions and go for Melbourne if you want lower humidity. There is no single "better" climate — it comes down to whether you value warmth, dryness or comfort most.
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 Melbourne and Mississauga, not a single year's weather or a short-range forecast.
