ERA5 almanac comparison — 8 years of real data
Oaxaca vs Zion / Springdale: weather in October
Oaxaca edges out Zion / Springdale for sun in October: 28% clear historically versus 20% (8-year ERA5 average, a 8-point gap). Oaxaca also sees measurably more rain than Zion / Springdale this month (46% vs 13% of days). Both are viable — Oaxaca is the safer bet.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific October. For this
week’s actual forecast, each destination links to its live page below.
Oaxaca
MX
- Clear days, October
- 28%
- Sample size
- n=248 days
- Avg high
- 77°F
- Early October (1st–15th)
- 22%
- Late October (16th–end)
- 34%
- Rain frequency
- 46% of days
Zion / Springdale
UT
- Clear days, October
- 20%
- Sample size
- n=248 days
- Avg high
- 64°F
- Early October (1st–15th)
- 32%
- Late October (16th–end)
- 9%
- Rain frequency
- 13% of days
Compare Oaxaca vs Zion / Springdale 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.