Tobago Cays and Union Island sit in the Caribbean Sea within a protected marine park, where five islets are sheltered by a horseshoe-shaped coral reef. The park encompasses reef, seagrass, lagoon, and mangrove habitats, and all scuba diving must be conducted through a registered local operator. Sites range from very shallow snorkelling grounds to intermediate-level drift dives, with visibility commonly reaching up to thirty metres. Divers encounter nurse sharks, green sea turtles, eagle rays, and a wide variety of reef fish, while the Puruni Wreck, a WWI-era British gunship resting at around twelve metres, adds a historical dimension suited to beginners and intermediate divers alike.
Monthly water temperature across Tobago Cays & Union Island's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature stays warm year-round, sitting in the mid- to upper-twenties Celsius from December through June and climbing into the low thirties by September and October. The best conditions for diving are generally December to May, when seas tend to be calmer and visibility is most reliable. A thin wetsuit or dive skin is sufficient for most of the year.
10 operators
Scarborough, Saint Vincent and the Grenadines
Roxborough, Saint Vincent and the Grenadines
Hillsborough, Saint Vincent and the Grenadines
Roxborough, Saint Vincent and the Grenadines
Hillsborough, Saint Vincent and the Grenadines
Scarborough, Saint Vincent and the Grenadines
Water temperature around Tobago Cays & Union 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 Tobago Cays & Union Island year-round.
Fin maps 5 sites in Tobago Cays & Union Island (5 scuba diving sites and 2 snorkelling spots, with some suited to both).
1 more site to explore
