Auckland is 3.3°C (5.9°F) warmer by day, Auckland has 10°C (18°F) warmer nights, Auckland gets 381 mm (15 in) more rain a year.
Auckland is at its warmest in January and coolest in July, while Mississauga peaks in July and bottoms out in January. Month for month, Auckland is the warmer of the two in 8 of 12 months.
Auckland is the wetter of the two, collecting 1,066 mm (42 in) of rain a year against 685 mm (27 in) in Mississauga. The most comfortable time to visit is January, February and March in Auckland and June, July and August in Mississauga.
| Auckland | Metric | Mississauga |
|---|---|---|
| 🌡️ Temperature | ||
| 21.3°C | 🌡️Average daytime high | 18°C |
| 9.5°C | 🌙Average nighttime low | -0.5°C |
| January | 🔥Hottest month | July |
| July | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 1,066 mm | 🌧️Annual rainfall | 685 mm |
| July | ☔Wettest month | July |
| February | 🏜️Driest month | February |
| 💨 Climate | ||
| 79% | 💧Average humidity | 78% |
| 4.6 m/s | 💨Average wind speed | 4.1 m/s |
Overnight, Auckland typically falls to around 9.5°C (49.1°F) while Mississauga settles near -0.5°C (31.1°F).
Auckland is hottest in January and coldest in July, whereas Mississauga peaks in July and is coolest in January.
Auckland sees the most rain in July and the least in February; Mississauga is wettest in July and driest in February.
Auckland feels the more humid of the two, averaging 79% relative humidity against 78%.
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 | Auckland | Mississauga | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 13.5 | 19.8 | 26.1 | -13.9 | -3.7❄️ | 6.5 |
| February | 14.4 | 20.2🔥 | 26 | -13.4 | -3.3 | 6.8 |
| March | 12.6 | 18.7 | 24.7 | -10.3 | 0.8 | 12 |
| April | 10.5 | 16.6 | 22.8 | -3.1 | 6.7 | 16.4 |
| May | 8.1 | 14 | 19.9 | 2.3 | 12.5 | 22.6 |
| June | 6.2 | 11.9 | 17.7 | 7.8 | 17.2 | 26.5 |
| July | 5.3 | 10.8❄️ | 16.3 | 13 | 20.7🔥 | 28.5 |
| August | 5.7 | 11.1 | 16.5 | 13.3 | 20.6 | 28 |
| September | 6.9 | 12.5 | 18.2 | 8.5 | 17.1 | 25.7 |
| October | 8.2 | 14.1 | 20.1 | 2.5 | 11.4 | 20.3 |
| November | 10.4 | 16.4 | 22.3 | -3.3 | 5.4 | 14 |
| December | 12.2 | 18.3 | 24.5 | -9.2 | -0.3 | 8.6 |
| Annual Avg | 9.5 | 15.4 | 21.3 | -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 Auckland and Mississauga feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Auckland Mississauga
See how Auckland 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 Auckland and Mississauga — each drawn straight from the climate figures above.
Auckland is the warmer of the two. It averages daytime highs of 21.3°C (70.3°F) against 18°C (64.4°F) in Mississauga — roughly 3.3°C (5.9°F) warmer by day. Nights are milder in Auckland, with average lows of 9.5°C (49.1°F) versus -0.5°C (31.1°F).
Auckland is hottest in January, averaging highs of about 26.1°C (78.9°F), while Mississauga 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 5.3°C (41.6°F) at the low point of the year in Auckland.
Auckland is the wetter city, collecting about 1,066 mm (42 in) of rain a year versus 685 mm (27 in) in Mississauga. Auckland is wettest in July and driest in February; Mississauga is wettest in July and driest in February.
Humidity is similar in both, averaging around 79% in Auckland and 78% in Mississauga across the year.
The most comfortable months in Auckland are January, February and March, 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.
Auckland is the warmer city in 8 of the 12 months of the year. The gap is widest in January, about 23.5°C (42.3°F), and narrowest in May, about 1.5°C (2.7°F).
Mississauga has the bigger seasonal swing, about 24.4°C (43.9°F) between its coldest and hottest months versus 9.4°C (16.9°F) in Auckland — so Auckland has the steadier, more even climate.
It depends what matters most to you: choose Auckland for warmer weather and pick Mississauga if you prefer drier conditions. 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 Auckland and Mississauga, not a single year's weather or a short-range forecast.
