When is sargassum season in Cayo Santa María?

Sargassum is heaviest in Cayo Santa María from June and July, in heavy bloom years. The clearest stretch is November through April.

What is the best time to visit Cayo Santa María to avoid seaweed?

November through April is the best window for clear water in Cayo Santa María.

Villa Clara (Jardines del Rey) · Cuba

Yes — Light in season

Cayo Santa María usually gets only light sargassum. The record 2026 season brought large arrivals from late May, so summer is rated conservatively.

Jan

Light

Feb

Light

Mar

Light

Apr

Light

May

Light

Jun

Moderate

Jul

Moderate

Aug

Light

Sep

Light

Oct

Light

Nov

Light

Dec

Light

LightModerate

Worst months

June and July, in heavy bloom years

Clearest water

November through April

•In July 2025 Cuba's tourism ministry promoted Cayo Santa María as immune to sargassum, crediting currents that push the mats out to sea. The 2026 reporting contradicts that, so take the claim with caution.
•This was one of the hardest-hit destinations in Cuba's 2026 hotel consolidation. Valentin Perla Blanca, Sol Cayo Santa María and Meliá Buenavista were among the hotels closed as of February 2026, so confirm the resort you book is open.
•Cayo Santa María is reached through Santa Clara airport, which Sunwing and WestJet Vacations scheduled to reopen to their flights on October 25, 2026, after a suspension that began June 20.