Mumbai is 7.9°C (14.2°F) warmer by day, Mumbai has 6.4°C (11.5°F) warmer nights, Mumbai gets 1,659 mm (65.3 in) more rain a year.
Mumbai is at its warmest in April and coolest in January, while Perth peaks in January and bottoms out in August. Month for month, Mumbai is the warmer of the two in 10 of 12 months.
Mumbai is the wetter of the two, collecting 2,354 mm (92.7 in) of rain a year against 695 mm (27.4 in) in Perth. The most comfortable time to visit is January, November and December in Mumbai and April, May and November in Perth.
| Mumbai | Metric | Perth |
|---|---|---|
| 🌡️ Temperature | ||
| 35.7°C | 🌡️Average daytime high | 27.8°C |
| 19.4°C | 🌙Average nighttime low | 13°C |
| April | 🔥Hottest month | January |
| January | ❄️Coldest month | August |
| 🌧️ Rain | ||
| 2,354 mm | 🌧️Annual rainfall | 695 mm |
| July | ☔Wettest month | July |
| January | 🏜️Driest month | December |
| 💨 Climate | ||
| 67% | 💧Average humidity | 69% |
| 2.6 m/s | 💨Average wind speed | 5.2 m/s |
Overnight, Mumbai typically falls to around 19.4°C (66.9°F) while Perth settles near 13°C (55.4°F).
Mumbai is hottest in April and coldest in January, whereas Perth peaks in January and is coolest in August.
Mumbai sees the most rain in July and the least in January; Perth is wettest in July and driest in December.
Perth feels the more humid of the two, averaging 69% relative humidity against 67%.
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 | Mumbai | Perth | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 12.7 | 24.1 | 35.5 | 15.9 | 25.3 | 34.7 |
| February | 14.5 | 26.7 | 38.9 | 16.3 | 25.4🔥 | 34.5 |
| March | 17.8 | 30 | 42.3 | 15.6 | 24.4 | 33.2 |
| April | 20.9 | 32 | 43 | 14.3 | 21.7 | 29.1 |
| May | 24 | 32.7🔥 | 41.5 | 12.9 | 19 | 25.1 |
| June | 24.8 | 30.9 | 36.9 | 11.2 | 16.6 | 22.1 |
| July | 24.1 | 27.3 | 30.4 | 10.4 | 15.5❄️ | 20.6 |
| August | 23.4 | 26.5 | 29.6 | 10 | 15.5 | 20.9 |
| September | 22.3 | 27.1 | 31.8 | 10.4 | 16.7 | 23 |
| October | 18.4 | 25.8 | 33.3 | 11.3 | 19 | 26.8 |
| November | 15.8 | 24.3 | 32.7 | 12.9 | 21.7 | 30.5 |
| December | 13.6 | 23.3❄️ | 33.1 | 14.6 | 24 | 33.4 |
| Annual Avg | 19.4 | 27.6 | 35.8 | 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 Mumbai and Perth feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Mumbai Perth
See how Mumbai 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 Mumbai and Perth — each drawn straight from the climate figures above.
Mumbai is the warmer of the two. It averages daytime highs of 35.7°C (96.3°F) against 27.8°C (82°F) in Perth — roughly 7.9°C (14.2°F) warmer by day. Nights are milder in Mumbai, with average lows of 19.4°C (66.9°F) versus 13°C (55.4°F).
Mumbai is hottest in April, averaging highs of about 43°C (109.5°F), while Perth peaks in January at around 34.7°C (94.5°F). That makes Mumbai the hotter of the two at the height of summer.
Perth gets colder. In its coldest month (August) overnight lows average about 10°C (50°F), compared with 12.7°C (54.8°F) at the low point of the year in Mumbai.
Mumbai is the wetter city, collecting about 2,354 mm (92.7 in) of rain a year versus 695 mm (27.4 in) in Perth. Mumbai is wettest in July and driest in January; Perth is wettest in July and driest in December.
Humidity is similar in both, averaging around 67% in Mumbai and 69% in Perth across the year.
The most comfortable months in Mumbai are January, 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.
Mumbai is the warmer city in 10 of the 12 months of the year. The gap is widest in June, about 14.3°C (25.7°F), and narrowest in December, about 0.7°C (1.3°F).
Both have a similar seasonal range — around 9.9°C (17.8°F) between the coldest and hottest months — so neither climate is noticeably more extreme than the other.
It depends what matters most to you: choose Mumbai for warmer weather and pick Perth 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 Mumbai and Perth, not a single year's weather or a short-range forecast.
