ERA5 almanac comparison — 8 years of real data
Aruba vs Sea Island: weather in July
Aruba edges out Sea Island for sun in July: 22% clear historically versus 14% (8-year ERA5 average, a 8-point gap). Sea Island also sees measurably more rain than Aruba this month (64% vs 40% of days). Both are viable — Aruba is the safer bet.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific July. For this
week’s actual forecast, each destination links to its live page below.
Aruba
AW
- Clear days, July
- 22%
- Sample size
- n=248 days
- Avg high
- 87°F
- Early July (1st–15th)
- 18%
- Late July (16th–end)
- 25%
- Rain frequency
- 40% of days
Sea Island
GA
- Clear days, July
- 14%
- Sample size
- n=248 days
- Avg high
- 87°F
- Early July (1st–15th)
- 12%
- Late July (16th–end)
- 16%
- Rain frequency
- 64% of days
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 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.