Emerald Beach Resort beach & sargassum forecast
Charlotte Amalie, St. Thomas, VI · U.S. Virgin Islands, U.S. Virgin Islands · 18.335, -64.964
Seaweed, water and beach grades update every 6 hours; live conditions load below.
Tell me when Emerald Beach Resort is clear
One email when the seaweed clears or the beach grades A, at most once a week per beach. We only ask for your email address, and every email has a one-click unsubscribe.
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Questions about Emerald Beach Resort
Does Emerald Beach Resort get sargassum (seaweed)?
Only a little in most years. At Emerald Beach Resort the typical-year risk stays low, even around July, the usual peak (moderate or heavier seaweed on the beach in an estimated 10% of weeks). Landings vary by year, wind and currents.
How warm is the water at Emerald Beach Resort?
About 86°F in October. The sea is warmest in September and October (about 86°F) and coolest in February and March (about 80°F).
When is the best time to visit Emerald Beach Resort?
For warm water and dry weather, aim for January through June. June is usually the quietest of those, with about 11 rainy days and a sea near 84°F.
When is hurricane season in U.S. Virgin Islands?
The Atlantic hurricane season runs June through November and peaks around September. Veabird rates the storm risk in U.S. Virgin Islands as moderate compared with the other beaches it covers; flexible bookings and travel insurance help in the peak months.
What guests say about Emerald Beach Resort
Guests like Great location · Friendly staff
Watch for Cleanliness issues · Poor food quality
- Cleanliness
6.8 - Service
8.3 - Location
9.3 - Room Quality
6.8 - Amenities
7.8 - Value for Money
7.2 - Food and Beverage
5.3 - Overall Experience
7.8
Read all 1,004 reviews · Compare on Expedia
Scores and reviews come from guests who stayed, through LiteAPI (Nuitée). The likes, watch-fors and category scores are an AI summary of those reviews. Partner links: Veabird may earn a commission.
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Sargassum season at Emerald Beach Resort
Low sargassum risk year-round at Emerald Beach Resort: even around July, the usual peak, Veabird estimates moderate or heavier seaweed on the beach in about 10% of weeks. Actual landings vary a lot by year, wind and currents; check the live conditions above.
Estimated share of weeks in each month with moderate or heavier seaweed on the beach. Veabird takes the landing season seen on Quintana Roo's beaches (a Puerto Morelos beach camera, 2015–2020, and the Mexican Navy's beach alerts, 2022–2026), the nearest coast with a multi-year beach record (this one has none), and scales it by how often NOAA AOML satellites see notable seaweed within about 20 km of this stretch of coast: 8% of weeks here on average, against 54% off Quintana Roo, so 15% of that season. The satellite share (2016–2024, the top fifth of all coast-weeks, adjusted for this beach's exposure of 30%) measures seaweed offshore, not on the sand: off the Riviera Maya it reads high even in winter, when little lands. Very low under 10%, Low 10–24%, Moderate 25–44%, High 45–69%, Very high 70%+. Beach faces 225°; onshore winds from that direction push seaweed ashore. The satellite record as open data.
Weather, water & seaweed by month at Emerald Beach Resort
Average highs run from about 79°F in January, February, March and April to 84°F in August, September and October. The sea is warmest in September and October (about 86°F) and coolest in February and March (about 80°F). March is usually the driest, with about 10 rainy days; October is the wettest, with about 17 rainy days.
| Month | Avg high | Sea | Rainy days | Sargassum |
|---|---|---|---|---|
| Jan | 79°F | 81°F | 11 | Very low |
| Feb | 79°F | 80°F | 12 | Very low |
| Mar | 79°F | 80°F | 10 | Very low |
| Apr | 79°F | 81°F | 12 | Very low |
| May | 82°F | 83°F | 12 | Very low |
| Jun | 83°F | 84°F | 11 | Very low |
| Jul | 83°F | 84°F | 14 | Low |
| Aug | 84°F | 85°F | 15 | Very low |
| Sep | 84°F | 86°F | 15 | Very low |
| Oct | 84°F | 86°F | 17 | Very low |
| Nov | 82°F | 84°F | 16 | Very low |
| Dec | 81°F | 82°F | 13 | Very low |
Monthly averages from 6 years of ERA5 reanalysis (Open-Meteo) for this area's 0.5° grid cell; rainy days have at least 1 mm (0.04 in). Sargassum is the typical-year estimate described above. Any given year can differ.
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 are a week in December. Change them to match the live forecast above.
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Nearest airports
- Cyril E. King (St. Thomas) (STT), ~1 km
Nearby resorts
- Island Beachcomber Hotel Charlotte Amalie, St. Thomas, VI · 0 km
- Carib Beach Resort Charlotte Amalie, St. Thomas, VI · 1 km
- Virgin Islands Camp Ground Charlotte Amalie, St. Thomas, VI · 2 km
- Windward Passage Hotel Charlotte Amalie, St. Thomas, VI · 3 km
- Crystal Palace Charlotte Amalie, St. Thomas, VI · 3 km
- Frenchman's Reef Marriott (Morning Star Beach) Charlotte Amalie, St. Thomas, VI · 4 km
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