Learn about unique regional weather. Webtoday's topsail island sea temperature is 25. 5 °c. Sunny with warm air temperatures at topsail.

Webaverage annual water temperature on the coast in topsail beach is 71°f, by the seasons: In winter 61°f, in spring 66°f, in summer 81°f, in autumn 74°f. 23. 2 ° c to 26. 9 ° c.