ERA5 almanac comparison — 8 years of real data
30A / Seaside vs Sea Island: weather in May
30A / Seaside edges out Sea Island for sun in May: 42% clear historically versus 36% (8-year ERA5 average, a 6-point gap). Both are viable — 30A / Seaside is the safer bet.
30A / Seaside
FL
- Clear days, May
- 42%
- Sample size
- n=248 days
- Avg high
- 81°F
- Early May (1st–15th)
- 51%
- Late May (16th–end)
- 34%
- Rain frequency
- 38% of days
Sea Island
GA
- Clear days, May
- 36%
- Sample size
- n=248 days
- Avg high
- 81°F
- Early May (1st–15th)
- 41%
- Late May (16th–end)
- 31%
- Rain frequency
- 36% of days
Frequently asked
Is 30A / Seaside or Sea Island warmer in May?
Equally warm by day in May. 30A / Seaside averages highs of 81°F (highs n=248 days); Sea Island averages highs of 81°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in 30A / Seaside or Sea Island in May?
Days with measurable rain: 30A / Seaside 38%, Sea Island 36% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in May, 30A / Seaside or Sea Island?
30A / Seaside edges out Sea Island for sun in May: 42% clear historically versus 36% (8-year ERA5 average, a 6-point gap). Both are viable — 30A / Seaside is the safer bet.
Compare 30A / Seaside vs Sea 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.