A national park beach with an underwater snorkelling trail.
Trunk Bay is in St. John, U.S. Virgin Islands, on the Atlantic coast.
Trunk Bay is inside Virgin Islands National Park on the north shore of St. John, best known for the marked underwater snorkelling trail across its offshore reef. The park charges a fee and provides restrooms, showers and a snack bar, and pets are not allowed on any beach in the park. Tides come from the gauge at Hawksnest Beach, half a mile west along the same shore.
Today's flag, water temperature, surf, wind, UV and tide times for Trunk Bay load on this page automatically. Conditions change through the day, so nothing on this page is a substitute for the flag flying when you arrive.
Amenity details are Coasti's own notes and can go out of date. Fees, lifeguard seasons and dog rules are set locally.
Flags run from green for low hazard to double red for water closed — see what each flag color means.
Tide predictions come from NOAA station Hawksnest Beach, St. John (9751417).
Weather and marine forecasts come from the National Weather Service at St. Thomas, Cyril E. King (TIST).
That depends on the flag and the surf, and both change through the day. Coasti shows the posted lifeguard flag when a current one exists, and estimates from surf, wind and rip-current risk when it does not. Today's answer for Trunk Bay loads at the top of this page.
Parking at Trunk Bay is paid. Park lot at the beach, national park entrance fee applies. Fees and lot hours change, so check locally before you go.
Dogs are not allowed on the beach at Trunk Bay. Nearby rules vary, so check locally before you go.