ERA5 almanac comparison — 8 years of real data
Antigua vs Jacksonville: weather in October
Jacksonville edges out Antigua for sun in October: 33% clear historically versus 6% (8-year ERA5 average, a 27-point gap). Antigua also sees measurably more rain than Jacksonville this month (67% vs 30% of days). Both are viable — Jacksonville 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.
Antigua
AG
- Clear days, October
- 6%
- Sample size
- n=248 days
- Avg high
- 85°F
- Early October (1st–15th)
- 7%
- Late October (16th–end)
- 5%
- Rain frequency
- 67% of days
Jacksonville
FL
- Clear days, October
- 33%
- Sample size
- n=248 days
- Avg high
- 79°F
- Early October (1st–15th)
- 28%
- Late October (16th–end)
- 37%
- Rain frequency
- 30% of days
Compare Antigua vs Jacksonville 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.