Coast, Altona, Charlotte Amalie. We calculate high and low water here from an ocean tide model — accurate to about 5 cm on open coasts, considerably less in tidal flats and river mouths. This spot is officially monitored, but the responsible authority publishes no annual classification of the water quality.
Water temperature 29.8 °C — NOAA Geo-Polar Blended (5 km), measured 04/11/2026 08:00.
High tide at 07:08, Low tide at 13:54 (Local time at the spot).
Swimming spots in Altona · Charlotte Amalie · Swimming spots in the U.S. Virgin Islands · Caribbean Sea · On the map