Sydney is 2.7°C (4.9°F) warmer by day, Sydney has 3°C (5.4°F) warmer nights, Auckland gets 103 mm (4.1 in) more rain a year.
Auckland is at its warmest in February and coolest in July, while Sydney peaks in January and bottoms out in July. Month for month, Sydney is the warmer of the two in 12 of 12 months.
Auckland is the wetter of the two, collecting 1,066 mm (42 in) of rain a year against 963 mm (37.9 in) in Sydney. The most comfortable time to visit is January, February and March in Auckland and March, April and December in Sydney.
| Auckland | Metric | Sydney |
|---|---|---|
| 🌡️ Temperature | ||
| 18.4°C | 🌡️Average daytime high | 21.1°C |
| 13.1°C | 🌙Average nighttime low | 16.1°C |
| February | 🔥Hottest month | January |
| July | ❄️Coldest month | July |
| 🌧️ Rain | ||
| 1,066 mm | 🌧️Annual rainfall | 963 mm |
| July | ☔Wettest month | February |
| February | 🏜️Driest month | September |
| 💨 Climate | ||
| 79% | 💧Average humidity | 73% |
| 4.6 m/s | 💨Average wind speed | 3.2 m/s |
Overnight, Auckland typically falls to around 13.1°C (55.6°F) while Sydney settles near 16.1°C (61°F).
Auckland is hottest in February and coldest in July, whereas Sydney peaks in January and is coolest in July.
Auckland sees the most rain in July and the least in February; Sydney is wettest in February and driest in September.
Auckland feels the more humid of the two, averaging 79% relative humidity against 73%.
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 | Auckland | Sydney | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 16.7 | 19.9 | 23.1 | 20.2 | 22.8🔥 | 25.4 |
| February | 17.3 | 20.5🔥 | 23.6 | 20.5 | 22.8 | 25.1 |
| March | 16.2 | 19.1 | 22.1 | 19.6 | 21.8 | 24 |
| April | 14.4 | 17 | 19.7 | 17.5 | 19.7 | 21.9 |
| May | 12.4 | 14.7 | 17 | 15 | 17.2 | 19.3 |
| June | 10.6 | 12.7 | 14.8 | 12.6 | 14.7 | 16.8 |
| July | 9.4 | 11.6❄️ | 13.8 | 11.4 | 13.8❄️ | 16.1 |
| August | 9.5 | 11.8 | 14.1 | 11.7 | 14.4 | 17.1 |
| September | 10.4 | 12.9 | 15.4 | 13.4 | 16.3 | 19.3 |
| October | 11.7 | 14.4 | 17 | 15.2 | 18.2 | 21.2 |
| November | 13.3 | 16.2 | 19.1 | 16.9 | 19.7 | 22.5 |
| December | 15.4 | 18.4 | 21.4 | 18.7 | 21.5 | 24.3 |
| Annual Avg | 13.1 | 15.8 | 18.4 | 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 Auckland and Sydney feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Auckland Sydney
See how Auckland 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 Auckland and Sydney — each drawn straight from the climate figures above.
Sydney is the warmer of the two. It averages daytime highs of 21.1°C (70°F) against 18.4°C (65.1°F) in Auckland — roughly 2.7°C (4.9°F) warmer by day. Nights are milder in Sydney, with average lows of 16.1°C (61°F) versus 13.1°C (55.6°F).
Auckland is hottest in February, averaging highs of about 23.6°C (74.4°F), while Sydney peaks in January at around 25.4°C (77.7°F). That makes Sydney the hotter of the two at the height of summer.
Auckland gets colder. In its coldest month (July) overnight lows average about 9.4°C (49°F), compared with 11.4°C (52.6°F) at the low point of the year in Sydney.
Auckland is the wetter city, collecting about 1,066 mm (42 in) of rain a year versus 963 mm (37.9 in) in Sydney. Auckland is wettest in July and driest in February; Sydney is wettest in February and driest in September.
Auckland is the more humid of the two, averaging 79% relative humidity over the year against 73% in Sydney.
The most comfortable months in Auckland are January, February and March, 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.
Sydney is the warmer city in all 12 months of the year. The gap is widest in October, about 3.8°C (6.8°F), and narrowest in June, about 2°C (3.6°F).
Both have a similar seasonal range — around 9°C (16.2°F) between the coldest and hottest months — so neither climate is noticeably more extreme than the other.
On climate alone, Sydney comes out ahead — it offers warmer days, less rain and lower humidity than Auckland. Auckland 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 Auckland and Sydney, not a single year's weather or a short-range forecast.
