Caribbean
St. John
U.S. Virgin Islands
Tarpon schools at Carval Rock and coral cays a short boat ride out

Country
3 dive destinations in the U.S. Virgin Islands, up to 60 km apart. Water temperature across them runs 25–30 °C. All 3 are in season in Jun and Dec–Apr. 16 named dive sites have their own pages.
St. Thomas · photo Becky A. Dayhuff, Environmental Educator
RegionCaribbean
Numbers match the table below. Land outline: Natural Earth (public domain).
| # | Destination | Best months | Water | Visibility | Depth | Level | Access | Sites |
|---|---|---|---|---|---|---|---|---|
| 1 | St. John | Mar–Apr | 25–30°C | 18–30 m | 5–18 m | Beginnersites from beginner to advanced | Day boat | 4 |
| 2 | St. Thomas | Jun | 25–30°C | — | 9–24 m | Beginnersites from beginner to intermediate | Day boat | 7 |
| 3 | St. Croix | Dec–May | 25–30°C | 15–35 m | 5–40 m | Beginnersites from beginner to intermediate | Shore, Day boat | 5 |
The most destinations are rated good or prime at the same time in Jun and Dec–Apr: 3 of 3. Each row is one destination's own season rating.
| Destination | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1St. John | Good | Good | Prime | Prime | Good | Good | Fair | Fair | Fair | Fair | Fair | Good |
| 2St. Thomas | Good | Good | Good | Good | Fair | Prime | Fair | Fair | Fair | Fair | Fair | Good |
| 3St. Croix | Prime | Prime | Prime | Prime | Prime | Good | Good | Fair | Fair | Fair | Good | Prime |
| Good or prime | 3 | 3 | 3 | 3 | 2 | 3 | 1 | 0 | 0 | 0 | 1 | 3 |
Destinations that fit within 200 km of each other end to end and share at least one month rated good or prime. Distances are straight lines between destinations, not travel routes.
65 km end to end
In season together: Jun and Dec–Apr
Caribbean
U.S. Virgin Islands
Tarpon schools at Carval Rock and coral cays a short boat ride out
Swim-through rocks, a multi-level reef wall and two big wrecks
Swim off a beach onto a wall that drops past 900 metres