ERA5 almanac comparison — 8 years of real data
Cancún vs Naples: weather in May
Naples edges out Cancún for sun in May: 28% clear historically versus 21% (8-year ERA5 average, a 7-point gap). Both are viable — Naples is the safer bet.
Cancún
Mexico
- Clear days, May
- 21%
- Sample size
- n=248 days
- Avg high
- 87°F
- Early May (1st–15th)
- 24%
- Late May (16th–end)
- 18%
- Rain frequency
- 45% of days
Naples
FL
- Clear days, May
- 28%
- Sample size
- n=248 days
- Avg high
- 87°F
- Early May (1st–15th)
- 34%
- Late May (16th–end)
- 23%
- Rain frequency
- 48% of days
Frequently asked
Is Cancún or Naples warmer in May?
Equally warm by day in May. Cancún averages highs of 87°F (highs n=248 days); Naples averages highs of 87°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Cancún or Naples in May?
Days with measurable rain: Cancún 45%, Naples 48% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in May, Cancún or Naples?
Naples edges out Cancún for sun in May: 28% clear historically versus 21% (8-year ERA5 average, a 7-point gap). Both are viable — Naples is the safer bet.
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 forecast for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.