ERA5 almanac comparison — 8 years of real data
Amelia Island vs Hilton Head: weather in May
Essentially a tie in May: Amelia Island is 38% clear historically, Hilton Head is 39% clear (8-year ERA5 average) — within the noise. Avg high 82°F vs 81°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Amelia Island
FL
- Clear days, May
- 38%
- Sample size
- n=248 days
- Avg high
- 82°F
- Early May (1st–15th)
- 45%
- Late May (16th–end)
- 31%
- Rain frequency
- 41% of days
Hilton Head
SC
- Clear days, May
- 39%
- Sample size
- n=248 days
- Avg high
- 81°F
- Early May (1st–15th)
- 44%
- Late May (16th–end)
- 35%
- Rain frequency
- 39% of days
Frequently asked
Is Amelia Island or Hilton Head warmer in May?
Amelia Island runs warmer by day in May. Amelia Island averages highs of 82°F (highs n=248 days); Hilton Head averages highs of 81°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Amelia Island or Hilton Head in May?
Days with measurable rain: Amelia Island 41%, Hilton Head 39% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in May, Amelia Island or Hilton Head?
Essentially a tie in May: Amelia Island is 38% clear historically, Hilton Head is 39% clear (8-year ERA5 average) — within the noise. Avg high 82°F vs 81°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Amelia Island 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.