Perth is 1.7°C (3.1°F) warmer by day, Perth has 5.8°C (10.4°F) warmer nights, Melbourne gets 57 mm (2.2 in) more rain a year.
Melbourne is at its warmest in January and coolest in July, while Perth peaks in January and bottoms out in August. Month for month, Perth is the warmer of the two in 12 of 12 months.
Melbourne is the wetter of the two, collecting 752 mm (29.6 in) of rain a year against 695 mm (27.4 in) in Perth. The most comfortable time to visit is March, November and December in Melbourne and April, May and November in Perth.
| Melbourne | Metric | Perth |
|---|---|---|
| 🌡️ Temperature | ||
| 26.1°C | 🌡️Average daytime high | 27.8°C |
| 7.2°C | 🌙Average nighttime low | 13°C |
| January | 🔥Hottest month | January |
| July | ❄️Coldest month | August |
| 🌧️ Rain | ||
| 752 mm | 🌧️Annual rainfall | 695 mm |
| October | ☔Wettest month | July |
| February | 🏜️Driest month | December |
| 💨 Climate | ||
| 75% | 💧Average humidity | 69% |
| 3.3 m/s | 💨Average wind speed | 5.2 m/s |
Overnight, Melbourne typically falls to around 7.2°C (45°F) while Perth settles near 13°C (55.4°F).
Melbourne is hottest in January and coldest in July, whereas Perth peaks in January and is coolest in August.
Melbourne sees the most rain in October and the least in February; Perth is wettest in July and driest in December.
Melbourne feels the more humid of the two, averaging 75% relative humidity against 69%.
For Perth, the pick of the year is April, May and November.
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 | Perth | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 11.2 | 23.8🔥 | 36.5 | 15.9 | 25.3 | 34.7 |
| February | 11.5 | 23.4 | 35.3 | 16.3 | 25.4🔥 | 34.5 |
| March | 10.6 | 21.5 | 32.5 | 15.6 | 24.4 | 33.2 |
| April | 8.3 | 17.6 | 27 | 14.3 | 21.7 | 29.1 |
| May | 5.9 | 13.7 | 21.6 | 12.9 | 19 | 25.1 |
| June | 3.8 | 10.3 | 16.9 | 11.2 | 16.6 | 22.1 |
| July | 3 | 9.3❄️ | 15.6 | 10.4 | 15.5❄️ | 20.6 |
| August | 3.6 | 10.5 | 17.4 | 10 | 15.5 | 20.9 |
| September | 4.6 | 12.8 | 21 | 10.4 | 16.7 | 23 |
| October | 6 | 15.9 | 25.7 | 11.3 | 19 | 26.8 |
| November | 7.7 | 19 | 30.3 | 12.9 | 21.7 | 30.5 |
| December | 9.6 | 21.6 | 33.6 | 14.6 | 24 | 33.4 |
| Annual Avg | 7.2 | 16.6 | 26.1 | 13 | 20.4 | 27.8 |
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 Perth feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Melbourne Perth
See how Melbourne and Perth 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 Perth — each drawn straight from the climate figures above.
Perth is the warmer of the two. It averages daytime highs of 27.8°C (82°F) against 26.1°C (79°F) in Melbourne — roughly 1.7°C (3.1°F) warmer by day. Nights are milder in Perth, with average lows of 13°C (55.4°F) versus 7.2°C (45°F).
Melbourne is hottest in January, averaging highs of about 36.5°C (97.6°F), while Perth peaks in January at around 34.7°C (94.5°F). That makes Melbourne the hotter of the two at the height of summer.
Melbourne gets colder. In its coldest month (July) overnight lows average about 3°C (37.3°F), compared with 10°C (50°F) at the low point of the year in Perth.
Melbourne is the wetter city, collecting about 752 mm (29.6 in) of rain a year versus 695 mm (27.4 in) in Perth. Melbourne is wettest in October and driest in February; Perth is wettest in July and driest in December.
Melbourne is the more humid of the two, averaging 75% relative humidity over the year against 69% in Perth.
The most comfortable months in Melbourne are March, November and December, when average temperatures are at their mildest.
Perth is at its most pleasant around April, May and November, based on the mildest average temperatures of the year.
Perth is the warmer city in all 12 months of the year. The gap is widest in June, about 6.3°C (11.3°F), and narrowest in January, about 1.5°C (2.7°F).
Melbourne has the bigger seasonal swing, about 14.5°C (26.1°F) between its coldest and hottest months versus 9.9°C (17.8°F) in Perth — so Perth has the steadier, more even climate.
On climate alone, Perth comes out ahead — it offers warmer days, less rain and lower humidity than Melbourne. Melbourne is the better fit only if you'd actually prefer cooler weather, more rainfall and a more humid climate.
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 Perth, not a single year's weather or a short-range forecast.
