🇺🇸 Key West vs 🇺🇸 San Francisco
Weather Comparison
Current Weather Right Now
🇺🇸
Key West

81°F
Light Rain
Feels like 85°F
H 82°F / L 80°F
Humidity: 67%
🇺🇸
San Francisco

78°F
Scattered Clouds
Feels like 78°F
H 84°F / L 72°F
Humidity: 41%
Climate Overview
Key West
Key West at America's southernmost point has a true tropical climate — the only place in the continental US where it genuinely never gets cold. Surrounded by water on all sides, temperatures are moderated dramatically with winters in the 70s and summers rarely above 92°F. Hurricane risk is severe, and the Florida Straits can generate massive swells.
San Francisco
San Francisco's climate is shaped by its position on a peninsula surrounded by the Pacific Ocean and San Francisco Bay. The coastal fog (Karl the Fog) rolls in through the Golden Gate each summer afternoon, keeping temperatures mild year-round. The city has dramatically different microclimates — the Sunset District fog-bound while the Mission basks in sun on the same day.
Key West vs San Francisco: Frequently Asked Questions
Does Key West or San Francisco have better weather?
Key West and San Francisco have very different climates. Key West at America's southernmost point has a true tropical climate — the only place in the contine San Francisco: San Francisco's climate is shaped by its position on a peninsula surrounded by the Pacific Ocean and. The best city depends on your preferred season and temperature range.
When is the best time to visit Key West vs San Francisco?
Best time for Key West: spring and fall. Best time for San Francisco: spring and fall.