ERA5 almanac comparison — 8 years of real data
Aruba vs Costa Rica — Manuel Antonio: weather in April
Aruba edges out Costa Rica — Manuel Antonio for sun in April: 33% clear historically versus 8% (8-year ERA5 average, a 25-point gap). Costa Rica — Manuel Antonio also sees measurably more rain than Aruba this month (63% vs 24% 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 April. For this
week’s actual forecast, each destination links to its live page below.
Aruba
AW
- Clear days, April
- 33%
- Sample size
- n=240 days
- Avg high
- 86°F
- Early April (1st–15th)
- 40%
- Late April (16th–end)
- 26%
- Rain frequency
- 24% of days
Costa Rica — Manuel Antonio
CR
- Clear days, April
- 8%
- Sample size
- n=240 days
- Avg high
- 86°F
- Early April (1st–15th)
- 14%
- Late April (16th–end)
- 3%
- Rain frequency
- 63% of days
Compare Aruba vs Costa Rica — Manuel Antonio 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.