ERA5 almanac comparison — 8 years of real data
Outer Banks vs St. Barthélemy: weather in August
Outer Banks edges out St. Barthélemy for sun in August: 35% clear historically versus 14% (8-year ERA5 average, a 21-point gap). Both are viable — Outer Banks is the safer bet.
Outer Banks
NC
- Clear days, August
- 35%
- Sample size
- n=248 days
- Avg high
- 81°F
- Early August (1st–15th)
- 30%
- Late August (16th–end)
- 39%
- Rain frequency
- 44% of days
St. Barthélemy
St Barthelemy
- Clear days, August
- 14%
- Sample size
- n=248 days
- Avg high
- 84°F
- Early August (1st–15th)
- 10%
- Late August (16th–end)
- 18%
- Rain frequency
- 46% of days
Frequently asked
Is Outer Banks or St. Barthélemy warmer in August?
St. Barthélemy runs warmer by day in August. Outer Banks averages highs of 81°F (highs n=248 days); St. Barthélemy averages highs of 84°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Outer Banks or St. Barthélemy in August?
Days with measurable rain: Outer Banks 44%, St. Barthélemy 46% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in August, Outer Banks or St. Barthélemy?
Outer Banks edges out St. Barthélemy for sun in August: 35% clear historically versus 14% (8-year ERA5 average, a 21-point gap). Both are viable — Outer Banks is the safer bet.
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.