ERA5 almanac comparison — 8 years of real data
Anguilla vs Aruba: weather in January
Aruba edges out Anguilla for sun in January: 24% clear historically versus 17% (8-year ERA5 average, a 7-point gap). 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 January. For this
week’s actual forecast, each destination links to its live page below.
Anguilla
AI
- Clear days, January
- 17%
- Sample size
- n=248 days
- Avg high
- 79°F
- Early January (1st–15th)
- 14%
- Late January (16th–end)
- 20%
Aruba
AW
- Clear days, January
- 24%
- Sample size
- n=248 days
- Avg high
- 84°F
- Early January (1st–15th)
- 22%
- Late January (16th–end)
- 25%
Compare Anguilla vs Aruba 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.