ERA5 almanac comparison — 8 years of real data
Key West vs Nassau: weather in February
Essentially a tie in February: Key West is 37% clear historically, Nassau is 34% clear (8-year ERA5 average) — within the noise. Avg high 74°F vs 78°F. Nassau also sees measurably more rain than Key West this month (38% vs 21% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Key West
FL
- Clear days, February
- 37%
- Sample size
- n=226 days
- Avg high
- 74°F
- Early February (1st–15th)
- 38%
- Late February (16th–end)
- 35%
- Rain frequency
- 21% of days
Nassau
BS
- Clear days, February
- 34%
- Sample size
- n=226 days
- Avg high
- 78°F
- Early February (1st–15th)
- 37%
- Late February (16th–end)
- 30%
- Rain frequency
- 38% of days
Compare Key West vs Nassau 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 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.