ERA5 almanac comparison — 8 years of real data
Jacksonville vs Nashville: weather in August
Nashville edges out Jacksonville for sun in August: 32% clear historically versus 7% (8-year ERA5 average, a 25-point gap). Jacksonville also sees measurably more rain than Nashville this month (77% vs 47% of days). Both are viable — Nashville is the safer bet.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific August. For this
week’s actual forecast, each destination links to its live page below.
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
Nashville
TN
- Clear days, August
- 32%
- Sample size
- n=248 days
- Avg high
- 87°F
- Early August (1st–15th)
- 23%
- Late August (16th–end)
- 41%
- Rain frequency
- 47% of days
Compare Jacksonville vs Nashville 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.