Catalina Island sits in the Caribbean Sea off the south coast of the Dominican Republic and is reached by boat from Bayahibe or La Romana. The island is best known for two contrasting sites: a shallow, reef-focused area commonly called The Aquarium, and a wall that drops from a few metres to considerable depth. Visibility is strong, frequently reaching twenty metres or more. Water is warm in every month, peaking in September and October. The site range suits beginners and intermediates. December to April tends to be the driest and calmest period.
Monthly water temperature across Catalina Island's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature is warm throughout the year, rising to its highest in September and October and staying above mid-twenties even in the coolest months. December to April brings the driest and calmest conditions, making it a reliable window for day trips from the mainland.
3 operators
La Romana, Dominican Republic
La Romana, Dominican Republic
Water temperature around Catalina Island ranges from about 27°C in January to 30°C in September, based on satellite sea-temperature data for its dive sites.
With water around 27–30°C, a rash guard or 3mm shorty works in Catalina Island year-round.
Fin maps 6 sites in Catalina Island (6 scuba diving sites and 3 snorkelling spots, with some suited to both).
3 more sites to explore
