canIswim

Sea temperature and swimming season in U.S. Virgin Islands

When the sea is warm enough to swim in 2 coastal cities in U.S. Virgin Islands.

CityWarmestColdestSwimming season
Saint Croix 29.7°C Sep 26.9°C Mar all year
Charlotte Amalie 29.6°C Sep 26.7°C Feb all year

Season uses 19°C. Why that number, and where the data comes from