Dubai is 3.3°C (5.9°F) warmer by day, Dubai has 11.7°C (21.1°F) warmer nights, Perth gets 562 mm (22.1 in) more rain a year.
Dubai is at its warmest in August and coolest in February, while Perth peaks in January and bottoms out in August. Month for month, Dubai is the warmer of the two in 8 of 12 months.
Perth is the wetter of the two, collecting 695 mm (27.4 in) of rain a year against 133 mm (5.2 in) in Dubai. The most comfortable time to visit is January, February and March in Dubai and April, May and November in Perth.
| Dubai | Metric | Perth |
|---|---|---|
| 🌡️ Temperature | ||
| 31.1°C | 🌡️Average daytime high | 27.8°C |
| 24.7°C | 🌙Average nighttime low | 13°C |
| August | 🔥Hottest month | January |
| February | ❄️Coldest month | August |
| 🌧️ Rain | ||
| 133 mm | 🌧️Annual rainfall | 695 mm |
| January | ☔Wettest month | July |
| September | 🏜️Driest month | December |
| 💨 Climate | ||
| 69% | 💧Average humidity | 69% |
| 3.5 m/s | 💨Average wind speed | 5.2 m/s |
Overnight, Dubai typically falls to around 24.7°C (76.5°F) while Perth settles near 13°C (55.4°F).
Dubai is hottest in August and coldest in February, whereas Perth peaks in January and is coolest in August.
Dubai sees the most rain in January and the least in September; Perth is wettest in July and driest in December.
Dubai feels the more humid of the two, averaging 69% 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 | Dubai | Perth | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 18.5 | 21.4❄️ | 24.2 | 15.9 | 25.3 | 34.7 |
| February | 18.3 | 21.5 | 24.8 | 16.3 | 25.4🔥 | 34.5 |
| March | 19.5 | 23.3 | 27 | 15.6 | 24.4 | 33.2 |
| April | 22 | 25.7 | 29.4 | 14.3 | 21.7 | 29.1 |
| May | 25.2 | 28.9 | 32.6 | 12.9 | 19 | 25.1 |
| June | 28.3 | 31.5 | 34.7 | 11.2 | 16.6 | 22.1 |
| July | 30 | 33.5 | 37 | 10.4 | 15.5❄️ | 20.6 |
| August | 31.1 | 34.2🔥 | 37.2 | 10 | 15.5 | 20.9 |
| September | 30.3 | 33 | 35.7 | 10.4 | 16.7 | 23 |
| October | 28.1 | 30.8 | 33.5 | 11.3 | 19 | 26.8 |
| November | 24.4 | 27.4 | 30.5 | 12.9 | 21.7 | 30.5 |
| December | 20.5 | 23.7 | 26.8 | 14.6 | 24 | 33.4 |
| Annual Avg | 24.7 | 27.9 | 31.1 | 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 Dubai and Perth feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Dubai Perth
See how Dubai 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 Dubai and Perth — each drawn straight from the climate figures above.
Dubai is the warmer of the two. It averages daytime highs of 31.1°C (88°F) against 27.8°C (82°F) in Perth — roughly 3.3°C (5.9°F) warmer by day. Nights are milder in Dubai, with average lows of 24.7°C (76.5°F) versus 13°C (55.4°F).
Dubai is hottest in August, averaging highs of about 37.2°C (99°F), while Perth peaks in January at around 34.7°C (94.5°F). That makes Dubai 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 18.3°C (64.9°F) at the low point of the year in Dubai.
Perth is the wetter city, collecting about 695 mm (27.4 in) of rain a year versus 133 mm (5.2 in) in Dubai. Dubai is wettest in January and driest in September; Perth is wettest in July and driest in December.
Humidity is similar in both, averaging around 69% in Dubai and 69% in Perth across the year.
The most comfortable months in Dubai are January, February and March, 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.
Dubai is the warmer city in 8 of the 12 months of the year. The gap is widest in August, about 18.7°C (33.7°F), and narrowest in December, about 0.3°C (0.5°F).
Dubai has the bigger seasonal swing, about 12.8°C (23°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, Dubai comes out ahead — it offers warmer days and less rain than Perth. Perth is the better fit only if you'd actually prefer cooler weather and more rainfall.
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 Dubai and Perth, not a single year's weather or a short-range forecast.
