ERA5 almanac comparison — 8 years of real data
Cancún vs Naples: weather in June
Essentially a tie in June: Cancún is 10% clear historically, Naples is 7% clear (8-year ERA5 average) — within the noise. Avg high 86°F vs 87°F. Naples also sees measurably more rain than Cancún this month (82% vs 62% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Cancún
MX
- Clear days, June
- 10%
- Sample size
- n=240 days
- Avg high
- 86°F
- Early June (1st–15th)
- 11%
- Late June (16th–end)
- 8%
- Rain frequency
- 62% of days
Naples
FL
- Clear days, June
- 7%
- Sample size
- n=240 days
- Avg high
- 87°F
- Early June (1st–15th)
- 6%
- Late June (16th–end)
- 8%
- Rain frequency
- 82% of days
Compare Cancún 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 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.