Mary's Boon Beach Resort: sargassum, weather & water today
Simpson Bay, Sint Maarten · Leeward Islands (Anguilla to Antigua), Antigua & Barbuda · 18.041, -63.105
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Sargassum season at Mary's Boon Beach Resort
Sargassum risk at Mary's Boon Beach Resort typically peaks around June (moderate in a typical year). Lowest-risk months: January, February, March, April, 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 (30%). Beach faces 184°; onshore winds from that direction push seaweed ashore.
| Month | Typical risk |
|---|---|
| January | Very low |
| February | Very low |
| March | Low |
| April | Low |
| May | Moderate |
| June | Moderate |
| July | Moderate |
| August | Moderate |
| September | Low |
| October | Low |
| November | Very low |
| December | Very low |
Cleanup & barriers
- Offshore barriers
- Few booms (some in St. Martin/St. Barths lagoons)
- Public cleanup
- Collectivité crews on French side; hotels elsewhere; Orient Bay and Grand Cul-de-Sac frequently inundated
- Resort crews
- Luxury resorts rake daily
- Typical clearing time
- Same-day at resorts; windward bays can stay fouled for weeks in peak years
Safety notes
US State Dept: Antigua & Barbuda, St. Kitts & Nevis, Anguilla Level 1; Sint Maarten Level 1; St. Martin (France) Level 2 per France (verify)
- Petty and vehicle crime in Philipsburg/Marigot; watch valuables
- Drive left on English islands, right on French side
- High hurricane exposure (Irma 2017, Luis 1995)
Check official advisories and local flags before swimming. Decomposing sargassum releases hydrogen sulfide; avoid heavy piles.
Things to do near Simpson Bay, Sint Maarten
- Nelson's Dockyard, Antigua
- Shoal Bay East, Anguilla
- Maho Beach plane-spotting, SXM
- Gustavia shopping, St. Barths
- Brimstone Hill Fortress, St. Kitts
- Barbuda Frigate Bird Sanctuary
Fly in for the best beach days
Suggested dates fall in December, typically the lowest-seaweed month ahead for Mary's Boon Beach Resort. Change them to match the live forecast above.
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Nearest airports
- Princess Juliana Intl (Sint Maarten) (SXM), ~0 km
Nearby resorts
- Aqualina Beach Club Simpson Bay, Sint Maarten · 1 km
- Simpson Bay Beach Resorts Simpson Bay, Sint Maarten · 1 km
- Sonesta Maho Beach Resort Maho Bay, Sint Maarten · 2 km
- The Morgan Resort Maho Bay, Sint Maarten · 2 km
- Simpson Bay Resort, Marina & Spa Simpson Bay, Sint Maarten · 2 km
- Flamingo Beach Resort By Diamond Resorts Simpson Bay, Sint Maarten · 2 km
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