ERA5 almanac comparison — 8 years of real data

Aruba vs Palm Beach: weather in January

Essentially a tie in January: Aruba is 24% clear historically, Palm Beach is 27% clear (8-year ERA5 average) — within the noise. Avg high 84°F vs 73°F. Aruba also sees measurably more rain than Palm Beach this month (47% vs 31% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.

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.

Aruba

Clear days, January: 24%
Sample size: n=248 days
Avg high: 84°F
Early January (1st–15th): 22%
Late January (16th–end): 25%
Rain frequency: 47% of days

Palm Beach

Clear days, January: 27%
Sample size: n=248 days
Avg high: 73°F
Early January (1st–15th): 32%
Late January (16th–end): 23%
Rain frequency: 31% of days

Compare Aruba vs Palm Beach 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.