ERA5 almanac comparison — 8 years of real data
Aruba vs Sea Island: weather in October
Sea Island edges out Aruba for sun in October: 42% clear historically versus 14% (8-year ERA5 average, a 28-point gap). Both are viable — Sea Island is the safer bet.
Aruba
Aruba
- Clear days, October
- 14%
- Sample size
- n=248 days
- Avg high
- 88°F
- Early October (1st–15th)
- 17%
- Late October (16th–end)
- 12%
- Rain frequency
- 37% of days
Sea Island
GA
- Clear days, October
- 42%
- Sample size
- n=248 days
- Avg high
- 77°F
- Early October (1st–15th)
- 40%
- Late October (16th–end)
- 44%
- Rain frequency
- 30% of days
Frequently asked
Is Aruba or Sea Island warmer in October?
Aruba runs warmer by day in October. Aruba averages highs of 88°F (highs n=248 days); Sea Island averages highs of 77°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Aruba or Sea Island in October?
Days with measurable rain: Aruba 37%, Sea Island 30% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in October, Aruba or Sea Island?
Sea Island edges out Aruba for sun in October: 42% clear historically versus 14% (8-year ERA5 average, a 28-point gap). Both are viable — Sea Island is the safer bet.
Compare Aruba 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.