San Francisco vs Seattle
How to read the comparison chart
The grouped bars score each city 0–100 on cost, climate and safety — taller is better. San Francisco leads on any axis where its bar is higher, Seattle where its is. The cost bar uses a higher-is-cheaper scale, so Seattle's taller cost bar reflects its lower cost of living, not a higher price.
| Axis | San Francisco | Seattle |
|---|---|---|
| Livability | 51 | 57 |
| Cost (higher=cheaper) | 0 | 19 |
| Climate | 100 | 97 |
| Safety | 59 | 60 |
| Summer °C | 17.5 | 18.6 |
| Winter °C | 10.1 | 4.5 |
| Top disaster risk | earthquake | wildfire |
San Francisco vs Seattle: the short answer
Seattle comes out ahead on overall livability (57/100), modestly above San Francisco (51/100). The two cities diverge most on cost of living. On affordability Seattle is the cheaper base — a wide gap on our cost index (San Francisco 0 vs Seattle 19, where a higher score means a lower cost of living, normalised from World Bank price levels). For climate, Seattle runs warmer in summer (about 18.6°C peak vs 17.5°C in San Francisco), while winter lows sit near 10.1°C in San Francisco and 4.5°C in Seattle. On natural-disaster exposure Seattle is the safer choice (safety 60/100); the dominant modelled hazard is earthquake for San Francisco and wildfire for Seattle.
Which city should you choose?
- On a tight budget → Seattle — lower everyday costs..
- You want warmth → Seattle — hotter summers.
- Safety is the priority → Seattle — lower disaster risk.
- Best all-rounder → Seattle — 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 San Francisco or Seattle better to live in?
Seattle scores higher overall — 57 vs 51 on our 0–100 livability index, which weights cost, climate and safety.
Which is cheaper, San Francisco or Seattle?
Seattle has the lower cost of living (cost index 19 vs 0; higher = cheaper, from World Bank price levels).
Which is warmer, San Francisco or Seattle?
Seattle — summer highs reach about 18.6°C versus 17.5°C in San Francisco.
Which is safer from natural disasters, San Francisco or Seattle?
Seattle (disaster-safety 60/100). Main hazard: earthquake in San Francisco, wildfire in Seattle.
What is the main natural-disaster risk in San Francisco?
earthquake is the dominant modelled hazard for San Francisco on our risk index.
How is the San Francisco vs Seattle 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.