San Juan sits on the Atlantic coast and offers a compact range of reef, artificial reef, seagrass, and wreck sites within easy reach of the city. Shore entry is available at several spots, including Escambron Marine Park where a wave breaker keeps conditions consistent, making it a practical choice for beginners and refresher dives. Visibility is typically moderate, and species recorded include green sea turtles, West Indian manatees, spotted scorpionfish, porcupinefish, and parrotfish. Depths across the area range from very shallow to around thirty metres, giving both snorkellers and more experienced divers options.
Monthly water temperature across San Juan's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures are warm throughout the year, climbing from a steady winter baseline to their highest in late summer and early autumn. Visibility at San Juan sites tends to be lower than elsewhere in Puerto Rico, so calmer periods generally offer the clearest water.
Water temperature around San Juan 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 San Juan year-round.
Fin maps 6 sites in San Juan (6 scuba diving sites and 3 snorkelling spots, with some suited to both).
3 more sites to explore
