ERA5 almanac comparison — 8 years of real data
Jacksonville vs Miami: weather in August
Jacksonville edges out Miami for sun in August: 7% clear historically versus 2% (8-year ERA5 average, a 5-point gap). Both are viable — Jacksonville is the safer bet.
Jacksonville
FL
- Clear days, August
- 7%
- Sample size
- n=248 days
- Avg high
- 88°F
- Early August (1st–15th)
- 6%
- Late August (16th–end)
- 8%
- Rain frequency
- 77% of days
Miami
FL
- Clear days, August
- 2%
- Sample size
- n=248 days
- Avg high
- 88°F
- Early August (1st–15th)
- 3%
- Late August (16th–end)
- 2%
- Rain frequency
- 83% of days
Frequently asked
Is Jacksonville or Miami warmer in August?
Equally warm by day in August. Jacksonville averages highs of 88°F (highs n=248 days); Miami averages highs of 88°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Jacksonville or Miami in August?
Days with measurable rain: Jacksonville 77%, Miami 83% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in August, Jacksonville or Miami?
Jacksonville edges out Miami for sun in August: 7% clear historically versus 2% (8-year ERA5 average, a 5-point gap). 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.