ERA5 almanac comparison — 8 years of real data
Cayman Islands vs Hilton Head: weather in April
Hilton Head edges out Cayman Islands for sun in April: 38% clear historically versus 10% (8-year ERA5 average, a 28-point gap). Cayman Islands also sees measurably more rain than Hilton Head this month (58% vs 28% of days). Both are viable — Hilton Head is the safer bet.
Cayman Islands
Cayman Islands
- Clear days, April
- 10%
- Sample size
- n=240 days
- Avg high
- 84°F
- Early April (1st–15th)
- 15%
- Late April (16th–end)
- 5%
- Rain frequency
- 58% of days
Hilton Head
SC
- Clear days, April
- 38%
- Sample size
- n=240 days
- Avg high
- 74°F
- Early April (1st–15th)
- 31%
- Late April (16th–end)
- 44%
- Rain frequency
- 28% of days
Frequently asked
Is Cayman Islands or Hilton Head warmer in April?
Cayman Islands runs warmer by day in April. Cayman Islands averages highs of 84°F (highs n=240 days); Hilton Head averages highs of 74°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Cayman Islands or Hilton Head in April?
Cayman Islands is measurably wetter than Hilton Head. Days with measurable rain: Cayman Islands 58%, Hilton Head 28% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in April, Cayman Islands or Hilton Head?
Hilton Head edges out Cayman Islands for sun in April: 38% clear historically versus 10% (8-year ERA5 average, a 28-point gap). Cayman Islands also sees measurably more rain than Hilton Head this month (58% vs 28% of days). Both are viable — Hilton Head is the safer bet.
Compare Cayman Islands vs Hilton Head 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.