ERA5 almanac comparison — 8 years of real data
Charlotte vs Huatulco: weather in September
Charlotte is the clear winner for sun in September: 44% of days historically clear versus just 4% in Huatulco — a 40-point gap across 8 years of ERA5 data. Huatulco also sees measurably more rain than Charlotte this month (90% vs 31% of days). This isn't close.
Charlotte
NC
- Clear days, September
- 44%
- Sample size
- n=240 days
- Avg high
- 82°F
- Early September (1st–15th)
- 47%
- Late September (16th–end)
- 41%
- Rain frequency
- 31% of days
Huatulco
Mexico
- Clear days, September
- 4%
- Sample size
- n=240 days
- Avg high
- 84°F
- Early September (1st–15th)
- 5%
- Late September (16th–end)
- 4%
- Rain frequency
- 90% of days
Frequently asked
Is Charlotte or Huatulco warmer in September?
Huatulco runs warmer by day in September. Charlotte averages highs of 82°F (highs n=240 days); Huatulco averages highs of 84°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Charlotte or Huatulco in September?
Huatulco is measurably wetter than Charlotte. Days with measurable rain: Charlotte 31%, Huatulco 90% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in September, Charlotte or Huatulco?
Charlotte is the clear winner for sun in September: 44% of days historically clear versus just 4% in Huatulco — a 40-point gap across 8 years of ERA5 data. Huatulco also sees measurably more rain than Charlotte this month (90% vs 31% of days). This isn't close.
Compare Charlotte vs Huatulco 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.