Tobago Cays, Grenadines tide times

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived.

Model-derived from a global ocean grid. Useful indication; expect about ±45 minutes on average vs. a local harmonic gauge, individual stations vary widely. See /methodology for per-region detail. Not for navigation.

Conditions as of 18:00 local time. Refreshes daily.

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived. · Not for navigation.

The angler tradition for major/minor fishing windows: major ≈3-hour windows around moon transit and opposition; minor ≈2-hour windows around moonrise and moonset. Times are America/St Vincent local. Folk tradition, not a scientific forecast.

The Tobago Cays are a group of five uninhabited islands — Petit Bateau, Petit Tabac, Baradal, Jamesby, and Petit Rameau — enclosed within the Horseshoe Reef, a continuous barrier reef that curves around the eastern side of the group and breaks the Atlantic swell into the turquoise lagoon inside. The cays sit in the southern Grenadines, within the Tobago Cays Marine Park, approximately 45 kilometres south of Bequia. Access is by boat only; no regular ferry serves the cays directly. Day-charter boats from Union Island (the closest inhabited island, 10 kilometres south) and from Bequia, Saint Vincent, and the other Grenadines run regular trips. The tidal regime at the Tobago Cays is Caribbean mixed semidiurnal, spring range 0.3 to 0.4 metres — at the minimal end of the Caribbean microtidal spectrum. The Horseshoe Reef partially dampens the tidal signal inside the lagoon. Two unequal high tides and two unequal low tides per day. The tide is essentially irrelevant for snorkelling and swimming planning inside the lagoon; water depth changes by 0.3 metres or less. The tidal current through the passages between the cays is more relevant — the channels between Petit Bateau and Petit Tabac, and between Petit Tabac and Baradal, run with the tide, and the direction change at the turn produces brief slack-water windows that are the best conditions for drifting through the channels with a mask. The marine park is the best-known snorkelling and diving destination in the Grenadines. The interior lagoon has exceptional water clarity, typically 20 to 30 metres horizontal visibility in normal conditions. Hawksbill turtles are resident in the lagoon and feed on the sea grass beds immediately around the cays; snorkellers encounter them with high reliability in the morning before the day-charter boats arrive. The sea grass on the lagoon floor between the cays at Baradal is a designated turtle sanctuary; anchoring in the sea grass is prohibited. Green turtles also use the cays; both species nest on the beaches. The Horseshoe Reef itself — accessible by swimming from the inner lagoon at the reef's west face or by boat to the break zone on the Atlantic side — has the most dramatic coral architecture in the southern Grenadines. Large elk and staghorn coral formations on the reef crest, massive brain corals on the slopes below, and high fish diversity in the fish-rich upwelling zone where the Atlantic meets the reef face. Nurse sharks rest under the reef overhangs in the afternoon. Anchoring in the Tobago Cays Marine Park requires a permit purchased from park rangers who patrol the cays. Day visitors and charter boats typically anchor in the designated zones off Petit Bateau and Petit Tabac. Overnight anchoring is permitted in the designated zones; the park rangers collect fees from visiting vessels. No waste may be discharged in the park; all rubbish must be removed by visiting boats. Tide predictions for the Tobago Cays come from Open-Meteo Marine, a global gridded ocean model. Accuracy is typically within plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height. The management of the Tobago Cays Marine Park has improved significantly since its formal establishment in 2006. The permit system, the ranger patrol, and the waste management requirements have reduced the anchor damage and the plastic accumulation that characterised the anchorage in earlier decades. The coral condition in the protected zones has measurably improved compared to 2005 survey baselines. The challenge is enforcement consistency: the ranger patrol has limited resources, and the number of vessels anchoring simultaneously can exceed the patrol capacity on busy days in the main December through April season.