ERA5 almanac comparison — 8 years of real data
Outer Banks vs St. Barthélemy: weather in October
Essentially a tie in October: Outer Banks is 20% clear historically, St. Barthélemy is 20% clear (8-year ERA5 average) — within the noise. Avg high 71°F vs 83°F. St. Barthélemy also sees measurably more rain than Outer Banks this month (57% vs 23% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Outer Banks
NC
- Clear days, October
- 20%
- Sample size
- n=248 days
- Avg high
- 71°F
- Early October (1st–15th)
- 32%
- Late October (16th–end)
- 8%
- Rain frequency
- 23% of days
St. Barthélemy
St Barthelemy
- Clear days, October
- 20%
- Sample size
- n=248 days
- Avg high
- 83°F
- Early October (1st–15th)
- 21%
- Late October (16th–end)
- 20%
- Rain frequency
- 57% of days
Frequently asked
Is Outer Banks or St. Barthélemy warmer in October?
St. Barthélemy runs warmer by day in October. Outer Banks averages highs of 71°F (highs n=248 days); St. Barthélemy averages highs of 83°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Outer Banks or St. Barthélemy in October?
St. Barthélemy is measurably wetter than Outer Banks. Days with measurable rain: Outer Banks 23%, St. Barthélemy 57% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in October, Outer Banks or St. Barthélemy?
Essentially a tie in October: Outer Banks is 20% clear historically, St. Barthélemy is 20% clear (8-year ERA5 average) — within the noise. Avg high 71°F vs 83°F. St. Barthélemy also sees measurably more rain than Outer Banks this month (57% vs 23% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Outer Banks vs St. Barthélemy 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.