ERA5 almanac comparison — 8 years of real data
Jacksonville vs Miami: weather in May
Jacksonville edges out Miami for sun in May: 41% clear historically versus 20% (8-year ERA5 average, a 21-point gap). Miami also sees measurably more rain than Jacksonville this month (57% vs 33% of days). Both are viable — Jacksonville is the safer bet.
Jacksonville
FL
- Clear days, May
- 41%
- Sample size
- n=248 days
- Avg high
- 85°F
- Early May (1st–15th)
- 46%
- Late May (16th–end)
- 37%
- Rain frequency
- 33% of days
Miami
FL
- Clear days, May
- 20%
- Sample size
- n=248 days
- Avg high
- 85°F
- Early May (1st–15th)
- 23%
- Late May (16th–end)
- 18%
- Rain frequency
- 57% of days
Frequently asked
Is Jacksonville or Miami warmer in May?
Equally warm by day in May. Jacksonville averages highs of 85°F (highs n=248 days); Miami averages highs of 85°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Jacksonville or Miami in May?
Miami is measurably wetter than Jacksonville. Days with measurable rain: Jacksonville 33%, Miami 57% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in May, Jacksonville or Miami?
Jacksonville edges out Miami for sun in May: 41% clear historically versus 20% (8-year ERA5 average, a 21-point gap). Miami also sees measurably more rain than Jacksonville this month (57% vs 33% of days). Both are viable — Jacksonville is the safer bet.
Compare Jacksonville 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.