Outer Banks weather in September
September in Outer Banks: warm, rainy, with very humid — an excellent time to visit.
#3 of 12 months in Outer Banks · #479 of 897 destinations to visit in September · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Outer Banks in September
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Outer Banks climate normals — September
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 23°C / 74°F | |
| Rainfall | 100 mm / 3.9 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 19°C / 67°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 12.4 h | |
| Wind | 30 km/h / 19 mph | |
| Air quality (US AQI) | 53 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Outer Banks in September — FAQ
- Is September a good time to visit Outer Banks?
- September in Outer Banks: warm, rainy, with very humid — an excellent time to visit. It ranks #3 of 12 months for Outer Banks on SeasonMap's comfort score (82/100).
- What is the weather like in Outer Banks in September?
- In September, Outer Banks averages a daily high of 24.9°C and a low of 23.1°C, with about 100 mm of rain over roughly 9.2 rainy days.
- What is the air quality in Outer Banks in September?
- Outer Banks has a mean US Air Quality Index of about 53 in September.