ERA5 almanac comparison — 8 years of real data
Hilton Head vs Punta Mita: weather in December
Punta Mita is the clear winner for sun in December: 88% of days historically clear versus just 6% in Hilton Head — a 82-point gap across 8 years of ERA5 data. Hilton Head also sees measurably more rain than Punta Mita this month (27% vs 6% of days). This isn't close.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific December. For this
week’s actual forecast, each destination links to its live page below.
Hilton Head
SC
- Clear days, December
- 6%
- Sample size
- n=248 days
- Avg high
- 62°F
- Early December (1st–15th)
- 3%
- Late December (16th–end)
- 8%
- Rain frequency
- 27% of days
Punta Mita
MX
- Clear days, December
- 88%
- Sample size
- n=248 days
- Avg high
- 80°F
- Early December (1st–15th)
- 88%
- Late December (16th–end)
- 88%
- Rain frequency
- 6% of days
Compare Hilton Head vs Punta Mita 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.