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Agincourt Reef (The Rocks)

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Wave Height 0.2 mSwell Period 6.7 sWind Speed 8.1 knPrecipitation 3.8 mmTidal Phase flood

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Primary photo of Agincourt Reef (The Rocks) © Robert Linsdell

The spot

Community-maintained

Community contribution: submitted by Daniel

Agincourt Reef sits at the outer ribbon of the Great Barrier Reef, approximately 45 km from Port Douglas, North QLD. This pristine reef system features steep ribbon reefs rising from deep water — with a sheltered inner lagoon on one side and a dramatic outer wall dropping into the Coral Sea on the other. Snorkellers float above vibrant coral gardens in crystal-clear water (visibility regularly exceeding 20 metres), encountering enormous sea turtles, reef sharks, and schools of trevally. The 'The Rocks' site is known for its dramatic bommies and strong coral formations, making it one of the most rewarding snorkel destinations on the outer reef.

Know before you go

Logged by the community, confirmed by mods

  • Moderate risk: Tidal currents on outer reef wall

    Strong currents can occur along the outer reef edge, particularly when tidal flows accelerate between ribbon reef channels. Snorkellers are advised to stay within marked safe zones.

  • Moderate risk: Stinger season (marine stingers)

    Box jellyfish (Chironex fleckeri) and Irukandji may be present in warmer months, primarily November to May. Reef-safe stinger suits are provided or recommended.

  • Low risk: Open ocean swell and boat motion

    The ocean crossing from Port Douglas to the outer reef can be rough. Motion sickness is common, especially in the dry season trade winds (June–September).

  • Low risk: Sharp coral formations

    Coral cuts and scrapes are possible when snorkelling over shallow bommies or when entering/exiting the water near the pontoon. Maintain buoyancy and avoid touching coral.

  • Low risk: Intense tropical sun exposure

    Sun exposure is extreme on the open water. UV levels are high year-round in tropical North QLD. Reef-safe sunscreen, hats, and rash guards are essential.

Wildlife Guide

No wildlife notes for this spot yet.

Gallery

3 photos from the community

Getting in

Snorkel tour
Entry

Agincourt Reef is located approximately 45 km northeast of Port Douglas, North QLD. Daily tours depart from Port Douglas Marina via high-speed catamaran (approx. 90-minute journey). Quicksilver Cruises is the primary operator, with other operators like Silversonic and Calypso Reef Cruises also offering trips.

Parking & facilities

Parking available at Port Douglas Marina public car parks. Arrive early as spaces fill quickly during peak season (June–September). Fees apply in some lots. Alternatively, use the Port Douglas shuttle or accommodation transfers if arranged through your tour operator.

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Gallery ┬╖ 3 photos

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About this data

Conditions last evaluated
Spot data last updated
Data sources
Open-Meteo (marine & weather conditions), tide predictions via UTide, community contributors (descriptions, hazards, marine life).
License
Spot content licensed under CC BY-SA 4.0. How's the Spot is open source.
Weather & swell ┬╖ Open-Meteo marine & weather APIs Tides ┬╖ UTide harmonic analysis Sea & safety ┬╖ community reports