About Desecheo Island
Desecheo is an uninhabited island in the Mona Passage off Puerto Rico, administered as a protected area and noted for its marine habitats and diving. It lies to the west of Puerto Rico’s main island and has no resident population or visitor facilities.
The surrounding waters feature coral reefs, surge channels and steep drop-offs that attract recreational divers seeking clear visibility and reef fishes. On land, low rocky shores and small sandy coves provide habitat for seabirds and transient shore life rather than developed beaches.
The island has a history of military use in the 20th century and later conservation management; land restoration and invasive-species removal efforts have been undertaken to protect native wildlife. Because of its protected status and the island’s past, access is managed by authorities and visitors generally arrive only by organised boat trips with permits.
Desecheo sits in the Mona Passage off Puerto Rico’s west coast, administered from the Mayagüez area, and is reached by boat from Puerto Rico.
- Access restrictions: Entry to the island is controlled because it is managed as a protected wildlife area and has been closed or restricted to public access at times; visits typically require permits or are arranged through licensed dive operators.
- Primary attractions: The island is uninhabited and is best known for scuba diving and marine wildlife rather than visitor infrastructure.
What to See#
- Reefs and dive sites: Fringing coral reefs and submerged drop-offs form the principal dive sites around the island, offering clear water and a variety of reef fish and invertebrates.
- Beaches and wildlife areas: Small rocky beaches and ledges provide nesting habitat for seabirds and resting spots for visiting marine fauna, but there are no facilities for overnight stays.
Best Time to Visit Desecheo Island
Visit during the dry season (roughly December-April) when seas are calmer and diving/snorkeling conditions are best.
Weather & Climate near Desecheo Island
Tropical climate with consistently warm temperatures year-round. Temperatures range from 19°C to 32°C. Abundant rainfall (1504 mm/year), wettest in May.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | 20° - 29° | 24° | 51 mm | - | - | 4.3 m/s | - | - |
| February | - | 19° - 29° | 24° | 50 mm | - | - | 4.5 m/s | - | - |
| March | - | 20° - 29° | 24° | 69 mm | - | - | 4.5 m/s | - | - |
| April | - | 20° - 30° | 25° | 108 mm | - | - | 4.4 m/s | - | - |
| May | - | 21° - 31° | 26° | 191 mm | - | - | 4.0 m/s | - | - |
| June | - | 22° - 32° | 27° | 150 mm | - | - | 4.2 m/s | - | - |
| July | - | 22° - 32° | 27° | 148 mm | - | - | 4.7 m/s | - | - |
| August | - | 22° - 32° | 27° | 183 mm | - | - | 4.3 m/s | - | - |
| September | - | 22° - 32° | 27° | 180 mm | - | - | 3.8 m/s | - | - |
| October | - | 22° - 32° | 27° | 177 mm | - | - | 3.5 m/s | - | - |
| November | - | 21° - 31° | 26° | 117 mm | - | - | 3.9 m/s | - | - |
| December | - | 20° - 29° | 25° | 80 mm | - | - | 4.3 m/s | - | - |
How to Get to Desecheo Island
Desecheo Island is an uninhabited island off the west coast of Puerto Rico and has no regular ferry or public transport. It can only be reached by private boat or authorized dive charter from ports on Puerto Rico’s west coast (charters typically depart from towns in the Mayagüez/Aguadilla/Cabo Rojo area); landing is by boat only and there are no roads on the island. If you plan a visit, arrange transport and any necessary permits in advance with an experienced operator in western Puerto Rico.
Tips for Visiting Desecheo Island
- Obtain permission from the U.S. Fish & Wildlife Service before planning a visit-Desecheo is a wildlife refuge with restricted access and no public facilities.
- Travel only with an experienced licensed dive/snorkel/boat operator out of Mayagüez or Cabo Rojo; operators handle permits, landing procedures and the island's often choppy seas.
- Plan a morning trip for calmer seas and better underwater visibility; there are no services or overnight stays permitted, so treat it strictly as a day trip and follow refuge rules and landing instructions.