ERA5 almanac comparison — 8 years of real data
Costa Rica — Guanacaste vs Sea Island: weather in February
Costa Rica — Guanacaste is the clear winner for sun in February: 84% of days historically clear versus just 8% in Sea Island — a 76-point gap across 8 years of ERA5 data. Sea Island also sees measurably more rain than Costa Rica — Guanacaste this month (33% vs 3% of days). This isn't close.
Costa Rica — Guanacaste
Costa Rica
- Clear days, February
- 84%
- Sample size
- n=226 days
- Avg high
- 93°F
- Early February (1st–15th)
- 84%
- Late February (16th–end)
- 84%
- Rain frequency
- 3% of days
Sea Island
GA
- Clear days, February
- 8%
- Sample size
- n=226 days
- Avg high
- 65°F
- Early February (1st–15th)
- 3%
- Late February (16th–end)
- 13%
- Rain frequency
- 33% of days
Frequently asked
Is Costa Rica — Guanacaste or Sea Island warmer in February?
Costa Rica — Guanacaste runs warmer by day in February. Costa Rica — Guanacaste averages highs of 93°F (highs n=226 days); Sea Island averages highs of 65°F (highs n=226 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Costa Rica — Guanacaste or Sea Island in February?
Sea Island is measurably wetter than Costa Rica — Guanacaste. Days with measurable rain: Costa Rica — Guanacaste 3%, Sea Island 33% (n=226 and n=226 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in February, Costa Rica — Guanacaste or Sea Island?
Costa Rica — Guanacaste is the clear winner for sun in February: 84% of days historically clear versus just 8% in Sea Island — a 76-point gap across 8 years of ERA5 data. Sea Island also sees measurably more rain than Costa Rica — Guanacaste this month (33% vs 3% of days). This isn't close.
Compare Costa Rica — Guanacaste 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.