Weather in September
The perfect water temperature of 79.9°F (26.6°C) makes
September a great period for swimming and other water activities in
Cape Hatteras National Seashore,
North Carolina.
Ocean temperature
In Cape Hatteras National Seashore, in September, the average water temperature is 79.9°F (26.6°C).
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.
Daylight
In Cape Hatteras National Seashore, the average length of the day in September is 12h and 23min.
On the first day of September in Cape Hatteras National Seashore, sunrise is at 6:34 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:46 pm EDT.