ERA5 almanac comparison — 8 years of real data
Austin vs Puerto Rico: weather in October
Austin is the clear winner for sun in October: 48% of days historically clear versus just 9% in Puerto Rico — a 39-point gap across 8 years of ERA5 data. Puerto Rico also sees measurably more rain than Austin this month (71% vs 31% of days). This isn't close.
Austin
TX
- Clear days, October
- 48%
- Sample size
- n=248 days
- Avg high
- 83°F
- Early October (1st–15th)
- 62%
- Late October (16th–end)
- 35%
- Rain frequency
- 31% of days
Puerto Rico
PR
- Clear days, October
- 9%
- Sample size
- n=248 days
- Avg high
- 86°F
- Early October (1st–15th)
- 8%
- Late October (16th–end)
- 9%
- Rain frequency
- 71% of days
Frequently asked
Is Austin or Puerto Rico warmer in October?
Puerto Rico runs warmer by day in October. Austin averages highs of 83°F (highs n=248 days); Puerto Rico averages highs of 86°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Austin or Puerto Rico in October?
Puerto Rico is measurably wetter than Austin. Days with measurable rain: Austin 31%, Puerto Rico 71% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in October, Austin or Puerto Rico?
Austin is the clear winner for sun in October: 48% of days historically clear versus just 9% in Puerto Rico — a 39-point gap across 8 years of ERA5 data. Puerto Rico also sees measurably more rain than Austin this month (71% vs 31% of days). This isn't close.
Compare Austin vs Puerto Rico 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.