Mumbai is 11.6°C (20.9°F) warmer by day, Mumbai has 5.9°C (10.6°F) warmer nights, Mumbai gets 1,391 mm (54.8 in) more rain a year.
Mumbai is at its warmest in April and coolest in January, while Sydney peaks in January and bottoms out in July. Month for month, Mumbai is the warmer of the two in 12 of 12 months.
Mumbai is the wetter of the two, collecting 2,354 mm (92.7 in) of rain a year against 963 mm (37.9 in) in Sydney. The most comfortable time to visit is January, November and December in Mumbai and March, April and December in Sydney.
| Mumbai | Metric | Sydney |
|---|---|---|
| 🌡️ Temperature | ||
| 32.7°C | 🌡️Average daytime high | 21.1°C |
| 22°C | 🌙Average nighttime low | 16.1°C |
| April | 🔥Hottest month | January |
| January | ❄️Coldest month | July |
| 🌧️ Rain | ||
| 2,354 mm | 🌧️Annual rainfall | 963 mm |
| July | ☔Wettest month | February |
| January | 🏜️Driest month | September |
| 💨 Climate | ||
| 67% | 💧Average humidity | 73% |
| 2.6 m/s | 💨Average wind speed | 3.2 m/s |
Overnight, Mumbai typically falls to around 22°C (71.6°F) while Sydney settles near 16.1°C (61°F).
Mumbai is hottest in April and coldest in January, whereas Sydney peaks in January and is coolest in July.
Mumbai sees the most rain in July and the least in January; Sydney is wettest in February and driest in September.
Sydney feels the more humid of the two, averaging 73% relative humidity against 67%.
For Sydney, the pick of the year is March, April and December.
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 | Sydney | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 16.6 | 24.3 | 32.1 | 20.2 | 22.8🔥 | 25.4 |
| February | 18.4 | 26.6 | 34.7 | 20.5 | 22.8 | 25.1 |
| March | 21.4 | 29.7 | 37.9 | 19.6 | 21.8 | 24 |
| April | 23.9 | 31.6 | 39.2 | 17.5 | 19.7 | 21.9 |
| May | 26.2 | 31.9🔥 | 37.6 | 15 | 17.2 | 19.3 |
| June | 26.2 | 29.1 | 32 | 12.6 | 14.7 | 16.8 |
| July | 25.1 | 26.9 | 28.7 | 11.4 | 13.8❄️ | 16.1 |
| August | 24.4 | 26.3 | 28.2 | 11.7 | 14.4 | 17.1 |
| September | 23.8 | 26.4 | 29 | 13.4 | 16.3 | 19.3 |
| October | 22 | 26.6 | 31.1 | 15.2 | 18.2 | 21.2 |
| November | 19.1 | 25.1 | 31 | 16.9 | 19.7 | 22.5 |
| December | 17.1 | 24.1❄️ | 31.1 | 18.7 | 21.5 | 24.3 |
| Annual Avg | 22 | 27.4 | 32.7 | 16.1 | 18.6 | 21.1 |
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 Sydney feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Mumbai Sydney
See how Mumbai and Sydney 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 Sydney — each drawn straight from the climate figures above.
Mumbai is the warmer of the two. It averages daytime highs of 32.7°C (90.9°F) against 21.1°C (70°F) in Sydney — roughly 11.6°C (20.9°F) warmer by day. Nights are milder in Mumbai, with average lows of 22°C (71.6°F) versus 16.1°C (61°F).
Mumbai is hottest in April, averaging highs of about 39.2°C (102.6°F), while Sydney peaks in January at around 25.4°C (77.7°F). That makes Mumbai the hotter of the two at the height of summer.
Sydney gets colder. In its coldest month (July) overnight lows average about 11.4°C (52.6°F), compared with 16.6°C (61.8°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 963 mm (37.9 in) in Sydney. Mumbai is wettest in July and driest in January; Sydney is wettest in February and driest in September.
Sydney is the more humid of the two, averaging 73% relative humidity over the year against 67% in Mumbai.
The most comfortable months in Mumbai are January, November and December, when average temperatures are at their mildest.
Sydney is at its most pleasant around March, April and December, based on the mildest average temperatures of the year.
Mumbai is the warmer city in all 12 months of the year. The gap is widest in May, about 14.7°C (26.5°F), and narrowest in January, about 1.5°C (2.7°F).
Sydney has the bigger seasonal swing, about 9°C (16.2°F) between its coldest and hottest months versus 7.8°C (14°F) in Mumbai — so Mumbai has the steadier, more even climate.
It depends what matters most to you: choose Mumbai for warmer weather, pick Sydney if you prefer drier conditions and go for Mumbai 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 Mumbai and Sydney, not a single year's weather or a short-range forecast.
