ERA5 almanac comparison — 8 years of real data
Naples vs Tampa: weather in September
Essentially a tie in September: Naples is 9% clear historically, Tampa is 12% clear (8-year ERA5 average) — within the noise. Avg high 88°F vs 87°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Naples
FL
- Clear days, September
- 9%
- Sample size
- n=240 days
- Avg high
- 88°F
- Early September (1st–15th)
- 6%
- Late September (16th–end)
- 12%
- Rain frequency
- 72% of days
Tampa
FL
- Clear days, September
- 12%
- Sample size
- n=240 days
- Avg high
- 87°F
- Early September (1st–15th)
- 6%
- Late September (16th–end)
- 18%
- Rain frequency
- 67% of days
Frequently asked
Is Naples or Tampa warmer in September?
Naples runs warmer by day in September. Naples averages highs of 88°F (highs n=240 days); Tampa averages highs of 87°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Naples or Tampa in September?
Days with measurable rain: Naples 72%, Tampa 67% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in September, Naples or Tampa?
Essentially a tie in September: Naples is 9% clear historically, Tampa is 12% clear (8-year ERA5 average) — within the noise. Avg high 88°F vs 87°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Naples vs Tampa 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.