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Destination Guide

Union Island and Tobago Cays

Union Island logistics, Tobago Cays magic, and one of the Caribbean's best mixed water-playgrounds

Updated Mar 25, 202624 sources

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Overview

Union Island logistics, Tobago Cays magic, and one of the Caribbean's best mixed water-playgrounds

Union Island is the working gateway to the Southern Grenadines: a dry, hilly island with Clifton Harbour, Chatham Bay, Ashton Lagoon, and fast access to the reefs and turtles of Tobago Cays Marine Park. Tobago Cays itself is the jewel: five tiny cays, a vast protected lagoon, the four-kilometre Horseshoe Reef, and some of Saint Vincent and the Grenadines' signature drift, wreck, and turtle-snorkel experiences.

For divers, Union gives you the logistics, local operators, and easy night dives. For snorkelers and freedivers, the inside of Horseshoe Reef and Baradal's turtle reserve are the headline draw. For non-divers, there are ridge hikes, birding, kitesurfing culture, beach barbecues, and sunset coves. The catch is that this is a remote, weather-sensitive destination where boats, moorings, park rules, and storm recovery all matter. Plan well, travel light but smart, and it rewards you with one of the Caribbean's most memorable mixed-water itineraries.

What Makes It Special

  • Protected marine park

    Tobago Cays Marine Park combines turtle habitat, sea-grass beds, bird sanctuaries, mangroves, and the four-kilometre Horseshoe Reef in one managed seascape.

  • Union as the gateway

    Union Island gives you the airport, Clifton Harbour, customs, provisioning, dive operators, and easy launch point that make the whole destination work.

  • Excellent for mixed groups

    Scuba, snorkeling, freediving, hiking, birding, and simple beach days all fit into the same short-stay itinerary without forcing travelers into separate bases.

  • Guided but adventurous

    You still get remote-island flavor and real weather-led planning, but with official park management, local operators, and practical access from Union.

Signature Spots Preview

Quick shortlist before you jump into the full planning page.

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Mayreau Hot Springs dive spot
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Best time to go

December to May

Historical dry season, steadier weather, easier islandhopping, and routine trade winds around 10 km/h to 25 km/h

Main caution: Inside Atlantic hurricane season, with greater chance of rain, swell, transfer changes, and poststorm disruptions

See full season planner

Logistics Preview

  • Union Island Airport · 5 to 10 minutes taxi to Clifton
  • Argyle International Airport · Connect by onward flight or charter to Union Island or Canouan, then continue by road or boat
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Safety Preview

  • Hurricane season changes the risk equation
  • Do not freelance scuba in Tobago Cays
Open Safety Guide

FAQ Preview

  • When is the best time to visit Union Island and Tobago Cays for scuba diving?
  • When is the best time to snorkel with turtles in Tobago Cays?
Open FAQs

About these guides

DiveJourney destination guides are living documents built from local knowledge, operator experience, and publicly available sources. Conditions, regulations, and logistics can change. Each guide shows its last update date and sources used.

Last updated: March 25, 2026 24 sources

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