ERA5 almanac comparison — 8 years of real data
Asheville vs Puerto Vallarta: weather in September
Asheville is the clear winner for sun in September: 40% of days historically clear versus just 4% in Puerto Vallarta — a 36-point gap across 8 years of ERA5 data. Puerto Vallarta also sees measurably more rain than Asheville this month (78% vs 32% of days). This isn't close.
Asheville
NC
- Clear days, September
- 40%
- Sample size
- n=240 days
- Avg high
- 78°F
- Early September (1st–15th)
- 41%
- Late September (16th–end)
- 38%
- Rain frequency
- 32% of days
Puerto Vallarta
Mexico
- Clear days, September
- 4%
- Sample size
- n=240 days
- Avg high
- 86°F
- Early September (1st–15th)
- 3%
- Late September (16th–end)
- 4%
- Rain frequency
- 78% of days
Frequently asked
Is Asheville or Puerto Vallarta warmer in September?
Puerto Vallarta runs warmer by day in September. Asheville averages highs of 78°F (highs n=240 days); Puerto Vallarta averages highs of 86°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Asheville or Puerto Vallarta in September?
Puerto Vallarta is measurably wetter than Asheville. Days with measurable rain: Asheville 32%, Puerto Vallarta 78% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in September, Asheville or Puerto Vallarta?
Asheville is the clear winner for sun in September: 40% of days historically clear versus just 4% in Puerto Vallarta — a 36-point gap across 8 years of ERA5 data. Puerto Vallarta also sees measurably more rain than Asheville this month (78% vs 32% of days). This isn't close.
Compare Asheville vs Puerto Vallarta 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.