Heating degree days. In a nutshell: heating degree days are a measure of how much (in degrees), and for how long (in days), the outside air temperature was below a certain level. They are commonly used in calculations relating to the energy consumption required to heat buildings.
Ocean Isle Beach is located in southwest Brunswick County at (33.894558, -78.438895 The town spans the barrier island of Ocean Isle Beach, extending 5 miles (8 km) from Tubbs Inlet on the west to Shallotte Inlet on the east, and a section of the mainland to the north along North Carolina Highway 904.
Weather.gov > NWS Wilmington, NC > Oak Island, NC Water Temperature Climatology. Oak Island is a barrier island along the coast of Brunswick County, NC. Stretching almost 13 miles from the mouth of the Cape Fear River to Lockwoods Folly Inlet, Oak Island is one of the few south-facing beaches in North Carolina.