Sydney vs Adelaide
How to read the comparison chart
The grouped bars score each city 0–100 on cost, climate and safety — taller is better. Sydney leads on any axis where its bar is higher, Adelaide where its is. The cost bar uses a higher-is-cheaper scale, so Sydney's taller cost bar reflects its lower cost of living, not a higher price.
| Axis | Sydney | Adelaide |
|---|---|---|
| Livability | 57 | 56 |
| Cost (higher=cheaper) | 5 | 0 |
| Climate | 100 | 100 |
| Safety | 73 | 75 |
| Summer °C | 22.6 | 19.9 |
| Winter °C | 12.4 | 9.0 |
| Top disaster risk | storms (hurricane/cyclone) | wildfire |
Sydney vs Adelaide: the short answer
Sydney comes out ahead on overall livability (57/100), only marginally above Adelaide (56/100). The two cities diverge most on cost of living. On affordability Sydney is the cheaper base — nearly identical prices on our cost index (Sydney 5 vs Adelaide 0, where a higher score means a lower cost of living, normalised from World Bank price levels). For climate, Sydney runs warmer in summer (about 22.6°C peak vs 19.9°C in Adelaide), while winter lows sit near 12.4°C in Sydney and 9.0°C in Adelaide. On natural-disaster exposure Adelaide is the safer choice (safety 75/100); the dominant modelled hazard is storms (hurricane/cyclone) for Sydney and wildfire for Adelaide.
Which city should you choose?
- On a tight budget → Sydney — lower everyday costs..
- You want warmth → Sydney — hotter summers.
- Safety is the priority → Adelaide — lower disaster risk.
- Best all-rounder → Sydney — highest overall livability.
Data & methodology
Cost scores are normalised from World Bank price-level data. Climate figures (summer highs, winter lows) are drawn from 1991–2020 climate normals. Disaster-safety blends USGS earthquake history (magnitude 4.5+ within 300 km since 1980), tropical-cyclone basin position, flood/elevation exposure and Köppen climate zone. The livability score is the weighted composite of cost, climate and safety. All figures are planning indicators for 2026, not guarantees — verify specifics before relocating.
FAQ
Is Sydney or Adelaide better to live in?
Sydney scores higher overall — 57 vs 56 on our 0–100 livability index, which weights cost, climate and safety.
Which is cheaper, Sydney or Adelaide?
Sydney has the lower cost of living (cost index 5 vs 0; higher = cheaper, from World Bank price levels).
Which is warmer, Sydney or Adelaide?
Sydney — summer highs reach about 22.6°C versus 19.9°C in Adelaide.
Which is safer from natural disasters, Sydney or Adelaide?
Adelaide (disaster-safety 75/100). Main hazard: storms (hurricane/cyclone) in Sydney, wildfire in Adelaide.
What is the main natural-disaster risk in Sydney?
storms (hurricane/cyclone) is the dominant modelled hazard for Sydney on our risk index.
How is the Sydney vs Adelaide comparison calculated?
Cost comes from World Bank price levels, climate from 1991–2020 normals, and disaster risk from USGS earthquake data, cyclone-basin position and flood exposure; livability is their weighted composite.