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 29.6 °C — NOAA Geo-Polar Blended (5 km), measured 20/09/2026 08:00.
Low tide at 10:48, High tide at 18:37 (Local time at the spot).
Swimming spots in Altona · Charlotte Amalie · Swimming spots in the U.S. Virgin Islands · Caribbean Sea · On the map