Day Reef is a remote, pristine outer-shelf ribbon reef in the northern Great Barrier Reef Marine Park, located roughly 30 km east of Lizard Island. This ribbon reef features sheer coral walls dropping into deep blue water, shallow coral gardens, and abundant hard and soft coral formations. Its isolated location means exceptionally clear visibility and uncrowded snorkeling conditions, offering a true wilderness reef experience. Access is exclusively by boat — typically via multi-day liveaboard tours or private charter from Lizard Island or Cairns. The reef is part of the protected ribbon reef system and is known for its dramatic underwater topography and diverse coral ecosystems.
Day Reef
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Wave Height 0.3 mSwell Period 5.8 sWind Speed 10.0 knPrecipitation 2.9 mmTidal Phase flood
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Community contribution: submitted by Daniel
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Moderate risk: Strong tidal currents
As an outer ribbon reef, Day Reef experiences significant tidal flows that can sweep snorkelers along the reef wall. Snorkel only during slack tide or with a guide.
Moderate risk: Marine stingers
Box jellyfish and Irukandji may be present in warmer months. Wear a stinger suit and check local warnings.
Low risk: Deep drop-offs
The reef edge drops abruptly into deep water. Snorkelers should stay aware of their position relative to the reef wall and avoid drifting beyond the coral shelf.
Low risk: Remote location
Day Reef is far from medical facilities. Any injury or marine envenomation requires evacuation by boat or helicopter. Travel with a guided tour operator.
Low risk: Sun exposure
Intense tropical sun with limited shade on tour boats. Use reef-safe sunscreen, wear a rash guard, and hydrate regularly.
Wildlife Guide
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Gallery
2 photos from the community
Getting in
Boat
Entry
Day Reef is located approximately 30 km east of Lizard Island, Queensland, in the northern Great Barrier Reef Marine Park. Access is by boat only — typically via guided day trips from Lizard Island Resort, or as part of multi-day liveaboard tours departing from Cairns or Port Douglas. No public ferry service. Private charters can also arrange visits.
Parking & facilities
No parking at the reef itself. Parking is available at Lizard Island Resort (guests only) or at marina parking facilities in Cairns and Port Douglas if joining a tour from there.
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Gallery ┬╖ 2 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