ERA5 almanac comparison — 8 years of real data
Cancún vs Naples: weather in December
Naples edges out Cancún for sun in December: 45% clear historically versus 20% (8-year ERA5 average, a 25-point gap). Cancún also sees measurably more rain than Naples this month (47% vs 21% of days). Both are viable — Naples is the safer bet.
Cancún
Mexico
- Clear days, December
- 20%
- Sample size
- n=248 days
- Avg high
- 80°F
- Early December (1st–15th)
- 22%
- Late December (16th–end)
- 18%
- Rain frequency
- 47% of days
Naples
FL
- Clear days, December
- 45%
- Sample size
- n=248 days
- Avg high
- 77°F
- Early December (1st–15th)
- 53%
- Late December (16th–end)
- 38%
- Rain frequency
- 21% of days
Frequently asked
Is Cancún or Naples warmer in December?
Cancún runs warmer by day in December. Cancún averages highs of 80°F (highs n=248 days); Naples averages highs of 77°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Cancún or Naples in December?
Cancún is measurably wetter than Naples. Days with measurable rain: Cancún 47%, Naples 21% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in December, Cancún or Naples?
Naples edges out Cancún for sun in December: 45% clear historically versus 20% (8-year ERA5 average, a 25-point gap). Cancún also sees measurably more rain than Naples this month (47% vs 21% of days). 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.