ERA5 almanac comparison — 8 years of real data
New Orleans vs San Antonio: weather in October
San Antonio edges out New Orleans for sun in October: 49% clear historically versus 42% (8-year ERA5 average, a 7-point gap). Both are viable — San Antonio 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.
New Orleans
LA
- Clear days, October
- 42%
- Sample size
- n=248 days
- Avg high
- 79°F
- Early October (1st–15th)
- 48%
- Late October (16th–end)
- 37%
San Antonio
TX
- Clear days, October
- 49%
- Sample size
- n=248 days
- Avg high
- 84°F
- Early October (1st–15th)
- 58%
- Late October (16th–end)
- 40%
- Rain frequency
- 26% of days
Compare New Orleans vs San 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.