ERA5 almanac comparison — 8 years of real data
Costa Rica — Guanacaste vs Mexico City: weather in February
Costa Rica — Guanacaste edges out Mexico City for sun in February: 84% clear historically versus 71% (8-year ERA5 average, a 13-point gap). Both are viable — Costa Rica — Guanacaste is the safer bet.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific February. For this
week’s actual forecast, each destination links to its live page below.
Costa Rica — Guanacaste
CR
- 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
Mexico City
MX
- Clear days, February
- 71%
- Sample size
- n=226 days
- Avg high
- 77°F
- Early February (1st–15th)
- 64%
- Late February (16th–end)
- 79%
- Rain frequency
- 9% of days
Compare Costa Rica — Guanacaste vs Mexico City 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.