We have narrowed it down to two rental properties on Topsail, but I'm now getting a little nervous about what the weather will be like in late September. We'll be traveling 9/19 - 9/26. What are the air/ocean temps that time of year. For the past two years we have vacationed in Carolina/Kure Beach and it was hot with warm water temps. Since Topsail is quite a bit north of Cape Fear I'm worried that at that point in September it's not going to be warm enough to spend our days on the beach/in the ocean. Can anyone tell me what the weather is typically like in late September?