ERA5 almanac comparison — 8 years of real data
Hilton Head vs Kiawah Island: weather in June
Essentially a tie in June: Hilton Head is 20% clear historically, Kiawah Island is 22% clear (8-year ERA5 average) — within the noise. Avg high 86°F vs 84°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Hilton Head
SC
- Clear days, June
- 20%
- Sample size
- n=240 days
- Avg high
- 86°F
- Early June (1st–15th)
- 17%
- Late June (16th–end)
- 24%
- Rain frequency
- 52% of days
Kiawah Island
SC
- Clear days, June
- 22%
- Sample size
- n=240 days
- Avg high
- 84°F
- Early June (1st–15th)
- 21%
- Late June (16th–end)
- 22%
- Rain frequency
- 54% of days
Frequently asked
Is Hilton Head or Kiawah Island warmer in June?
Hilton Head runs warmer by day in June. Hilton Head averages highs of 86°F (highs n=240 days); Kiawah Island averages highs of 84°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Hilton Head or Kiawah Island in June?
Days with measurable rain: Hilton Head 52%, Kiawah Island 54% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in June, Hilton Head or Kiawah Island?
Essentially a tie in June: Hilton Head is 20% clear historically, Kiawah Island is 22% clear (8-year ERA5 average) — within the noise. Avg high 86°F vs 84°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Hilton Head vs Kiawah Island 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.