Cape Hatteras lies in the chain of long, thin barrier islands of the
Outer Banks, which arch out into the Atlantic Ocean away from the
U.S. mainland, then back toward the mainland, creating
lagoons and
estuaries sheltered from the
Atlantic Ocean. It is the site where the two great basins of the East Coast meet. The cape's
shoals are collectively known as
Diamond Shoals.
Climate Cape Hatteras has a
humid subtropical climate (
Köppen:
Cfa), with long, hot summers, and short, mild winters. Most of the area falls into
USDA Plant Hardiness Zone 9. Cape Hatteras is surrounded by water, with
Pamlico Sound to the west and the Atlantic Ocean to the east. The proximity to water moderates conditions throughout the year, producing cooler summers and warmer winters than inland areas of North Carolina. The cape is the northern limit of tropical fauna. For all narrative below, consult the climate table, showing climate data for the 1991–2020 period. During the summer, average daily highs are in the range, and occasional intense (but usually brief) thundershowers occur. As a result of its proximity to water, temperatures above are rare, with an average of only 2.3 days annually above ; }} ==History==