Crystal Palace: sargassum, weather & water today
Charlotte Amalie, St. Thomas, VI · U.S. Virgin Islands, U.S. Virgin Islands · 18.343, -64.933
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Sargassum season at Crystal Palace
Sargassum risk at Crystal Palace typically peaks around June (moderate in a typical year). Lowest-risk months: January, February, March, September, October, November, December. Actual landings vary a lot by year, wind and currents; check the live conditions above.
Typical-year risk from the published seasonality of the Great Atlantic Sargassum Belt × this beach's exposure (34%). Beach faces 159°; onshore winds from that direction push seaweed ashore.
| Month | Typical risk |
|---|---|
| January | Very low |
| February | Low |
| March | Low |
| April | Moderate |
| May | Moderate |
| June | Moderate |
| July | Moderate |
| August | Moderate |
| September | Low |
| October | Low |
| November | Low |
| December | Very low |
Cleanup & barriers
- Offshore barriers
- No offshore barriers; occasional booms at a few resorts
- Public cleanup
- Territorial DPNR / hotel crews rake affected beaches; east-end St. Croix and St. Thomas bays hit hardest
- Resort crews
- Large resorts clear frontage daily in season
- Typical clearing time
- Same-day at resorts; public beaches can lag days
Safety notes
US territory - no State Dept advisory (verify local guidance)
- Petty theft and car break-ins; avoid isolated areas at night in Charlotte Amalie and Christiansted
- Drive on the left; steep, narrow roads
- 2017 Irma/Maria showed high hurricane exposure Aug-Oct
Check official advisories and local flags before swimming. Decomposing sargassum releases hydrogen sulfide; avoid heavy piles.
Things to do near Charlotte Amalie, St. Thomas, VI
- Trunk Bay underwater trail (St. John)
- Virgin Islands National Park hikes
- Magens Bay
- Buck Island Reef National Monument
- Christiansted historic district
- Day sail to the BVI
Fly in for the best beach days
Suggested dates fall in December, typically the lowest-seaweed month ahead for Crystal Palace. Change them to match the live forecast above.
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Nearest airports
- Cyril E. King (St. Thomas) (STT), ~4 km
Nearby resorts
- Frenchman's Reef Marriott (Morning Star Beach) Charlotte Amalie, St. Thomas, VI · 2 km
- Marriott’s Frenchmen Cove Charlotte Amalie, St. Thomas, VI · 3 km
- The Westin Beach Resort & Spa at Frenchman's Reef Charlotte Amalie, St. Thomas, VI · 3 km
- Magens Bay Beach Area Magens Bay, St. Thomas, VI · 3 km
- Island Beachcomber Hotel Charlotte Amalie, St. Thomas, VI · 3 km
- Virgin Islands Camp Ground Charlotte Amalie, St. Thomas, VI · 3 km
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