ERA5 almanac comparison — 8 years of real data
Key West vs Miami: weather in October
Essentially a tie in October: Key West is 13% clear historically, Miami is 11% clear (8-year ERA5 average) — within the noise. Avg high 82°F vs 84°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Key West
FL
- Clear days, October
- 13%
- Sample size
- n=248 days
- Avg high
- 82°F
- Early October (1st–15th)
- 8%
- Late October (16th–end)
- 18%
- Rain frequency
- 52% of days
Miami
FL
- Clear days, October
- 11%
- Sample size
- n=248 days
- Avg high
- 84°F
- Early October (1st–15th)
- 6%
- Late October (16th–end)
- 16%
- Rain frequency
- 66% of days
Frequently asked
Is Key West or Miami warmer in October?
Miami runs warmer by day in October. Key West averages highs of 82°F (highs n=248 days); Miami averages highs of 84°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Key West or Miami in October?
Days with measurable rain: Key West 52%, Miami 66% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in October, Key West or Miami?
Essentially a tie in October: Key West is 13% clear historically, Miami is 11% clear (8-year ERA5 average) — within the noise. Avg high 82°F vs 84°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Key West vs Miami in another month
All percentages are historical averages from the ERA5 reanalysis via Open-Meteo, 8 full years (2018–2025). “Clear” means avg high ≥ 72 °F, precipitation < 1 mm, and a non-precipitation weather code. This is history, not a forecast. The live forecast for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.