ERA5 almanac comparison — 8 years of real data
Fort Lauderdale vs Key West: weather in May
Key West edges out Fort Lauderdale for sun in May: 33% clear historically versus 20% (8-year ERA5 average, a 13-point gap). Fort Lauderdale also sees measurably more rain than Key West this month (55% vs 38% of days). Both are viable — Key West is the safer bet.
Fort Lauderdale
FL
- Clear days, May
- 20%
- Sample size
- n=248 days
- Avg high
- 85°F
- Early May (1st–15th)
- 26%
- Late May (16th–end)
- 15%
- Rain frequency
- 55% of days
Key West
FL
- Clear days, May
- 33%
- Sample size
- n=248 days
- Avg high
- 82°F
- Early May (1st–15th)
- 38%
- Late May (16th–end)
- 29%
- Rain frequency
- 38% of days
Frequently asked
Is Fort Lauderdale or Key West warmer in May?
Fort Lauderdale runs warmer by day in May. Fort Lauderdale averages highs of 85°F (highs n=248 days); Key West averages highs of 82°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Fort Lauderdale or Key West in May?
Fort Lauderdale is measurably wetter than Key West. Days with measurable rain: Fort Lauderdale 55%, Key West 38% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in May, Fort Lauderdale or Key West?
Key West edges out Fort Lauderdale for sun in May: 33% clear historically versus 20% (8-year ERA5 average, a 13-point gap). Fort Lauderdale also sees measurably more rain than Key West this month (55% vs 38% of days). Both are viable — Key West is the safer bet.
Compare Fort Lauderdale vs Key West 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.