Webget the latest topsail island beach weather updates, including current water temperatures, surf conditions, and live webcams for north topsail beach, surf city, and. Websurf city, pender county water and sea temperatures for today, this week, this month and this year. Websurf city pier water temperatures peak in the range 27 to 29°c (81 to 84°f) on around the 25th of july and are at their lowest on about the 3rd of february, in the range 17 to 21°c.