ERA5 almanac comparison — 8 years of real data
Mexico City vs Naples: weather in October
Essentially a tie in October: Mexico City is 20% clear historically, Naples is 23% clear (8-year ERA5 average) — within the noise. Avg high 74°F vs 86°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Mexico City
Mexico
- Clear days, October
- 20%
- Sample size
- n=248 days
- Avg high
- 74°F
- Early October (1st–15th)
- 10%
- Late October (16th–end)
- 29%
- Rain frequency
- 50% of days
Naples
FL
- Clear days, October
- 23%
- Sample size
- n=248 days
- Avg high
- 86°F
- Early October (1st–15th)
- 12%
- Late October (16th–end)
- 34%
- Rain frequency
- 48% of days
Frequently asked
Is Mexico City or Naples warmer in October?
Naples runs warmer by day in October. Mexico City averages highs of 74°F (highs n=248 days); Naples averages highs of 86°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Mexico City or Naples in October?
Days with measurable rain: Mexico City 50%, Naples 48% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in October, Mexico City or Naples?
Essentially a tie in October: Mexico City is 20% clear historically, Naples is 23% clear (8-year ERA5 average) — within the noise. Avg high 74°F vs 86°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Mexico City vs Naples 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.