ERA5 almanac comparison — 8 years of real data
Palm Beach vs Wilmington: weather in September
Wilmington is the clear winner for sun in September: 36% of days historically clear versus just 6% in Palm Beach — a 30-point gap across 8 years of ERA5 data. Palm Beach also sees measurably more rain than Wilmington this month (79% vs 42% of days). This isn't close.
Palm Beach
FL
- Clear days, September
- 6%
- Sample size
- n=240 days
- Avg high
- 86°F
- Early September (1st–15th)
- 5%
- Late September (16th–end)
- 8%
- Rain frequency
- 79% of days
Wilmington
NC
- Clear days, September
- 36%
- Sample size
- n=240 days
- Avg high
- 82°F
- Early September (1st–15th)
- 33%
- Late September (16th–end)
- 38%
- Rain frequency
- 42% of days
Frequently asked
Is Palm Beach or Wilmington warmer in September?
Palm Beach runs warmer by day in September. Palm Beach averages highs of 86°F (highs n=240 days); Wilmington averages highs of 82°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Palm Beach or Wilmington in September?
Palm Beach is measurably wetter than Wilmington. Days with measurable rain: Palm Beach 79%, Wilmington 42% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in September, Palm Beach or Wilmington?
Wilmington is the clear winner for sun in September: 36% of days historically clear versus just 6% in Palm Beach — a 30-point gap across 8 years of ERA5 data. Palm Beach also sees measurably more rain than Wilmington this month (79% vs 42% of days). This isn't close.
Compare Palm Beach vs Wilmington 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.