ERA5 almanac comparison — 8 years of real data
Kiawah Island vs The Hamptons: weather in May
Kiawah Island is the clear winner for sun in May: 38% of days historically clear versus just 3% in The Hamptons — a 35-point gap across 8 years of ERA5 data. This isn't close.
Kiawah Island
SC
- Clear days, May
- 38%
- Sample size
- n=248 days
- Avg high
- 80°F
- Early May (1st–15th)
- 45%
- Late May (16th–end)
- 32%
- Rain frequency
- 37% of days
The Hamptons
NY
- Clear days, May
- 3%
- Sample size
- n=248 days
- Avg high
- 62°F
- Early May (1st–15th)
- 0%
- Late May (16th–end)
- 5%
- Rain frequency
- 34% of days
Frequently asked
Is Kiawah Island or The Hamptons warmer in May?
Kiawah Island runs warmer by day in May. Kiawah Island averages highs of 80°F (highs n=248 days); The Hamptons averages highs of 62°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Kiawah Island or The Hamptons in May?
Days with measurable rain: Kiawah Island 37%, The Hamptons 34% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in May, Kiawah Island or The Hamptons?
Kiawah Island is the clear winner for sun in May: 38% of days historically clear versus just 3% in The Hamptons — a 35-point gap across 8 years of ERA5 data. This isn't close.
Compare Kiawah Island vs The Hamptons 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.