NC has lots of wrecks. One of my favorites is the Hyde. It sits upright in 85 feet of water and was sunk as part of the artificial reef program. The last time I dove it we had exceptional visibility of about 75 feet horizontal. Heck, the worst I've seen it is about 45-50 feet. It's about 18 miles offshore. We went out with Aquatic Safaris in Wilmington. There are a lot of other wrecks in the area but the only other one I've done there is the John D Gill. It also lies in about 85 feet of water, but it is almost unrecognizable as a ship. It was sunk by a German sub during WWII. At one time, a buoy with a concrete anchor was place beside it to mark the site. However, a hurricane come thru several years ago, dragging the concrete anchor thru the ship, ripping it in half. The ship (or at least the bow section) is now nothing more than a pile of twisted metal but it does have an abundance of sea life around it. The bow and stern sections have crept so far apart due to storms and tides that the captain will tell you not to try following the debris field from whichever end you are on to the other because you won't have enough gas to get back. The Markham is another close-by wreck to the Hyde that lies on its port side. That was done intentionally because it was realized that it was too tall to be sunk upright and would interfere with ship traffic. We were supposed to do it the last time we dove the Hyde but they decided to just do the Hyde twice instead of move. I think they said the currents were too strong on the Markham even though we had no current at the Hyde and they are only a few hundred feet apart.
The Morehead City/Beaufort area is another good place to charter from. The U-352 is a well known German u-boat sunk during WWII that is a war grave memorial and is accessible from this area. I haven't dived it yet, but it is definitely on my list to do, hopefully this year. It is about 110 feet to the sand and usually has lots of sea life around it. Sand Tigers are a common site on most of the NC wrecks.
Water temps from July thru the end emd of September will range from the low 70's to around 80°.
There are simply too many shipwrecks on the NC coast that are fairly easy to dive to list them all.