Fitzroy Island vs Green Island: Which Should You Visit?

Quick answer: Fitzroy Island or Green Island?

Both are Great Barrier Reef islands close to Cairns, but they’re genuinely different experiences. Fitzroy Island is a large, rainforest-covered national park with granite peaks up to 269m, 4 walking tracks, a turtle rehabilitation centre and a resort — reached in 45 minutes by fast catamaran. Green Island is a tiny 12ha coral cay with flat, easy walks and rich birdlife, gazetted as national park all the way back in 1937. Want hiking, wildlife and a full day out? Fitzroy wins. Want a short, easy, historic island stop? Green Island fits the bill.

Fitzroy Island vs Green Island at a glance

Here’s how the two islands compare on the facts that matter most when you’re deciding where to spend your day on the reef.

Getting there: Cairns to Fitzroy Island vs Cairns to Green Island

Fitzroy Island sits 25km east of Cairns. Sunlover runs the crossing by fast catamaran in around 45 minutes, departing from the Cairns waterfront. It’s close enough that Sunlover’s Reef & Island in a Day tour combines it with a morning on the Outer Great Barrier Reef at Moore Reef, so you get completely different environments in the same day — an outer reef pontoon and a rainforest island.

Green Island is a little further out at 27km offshore, and is reached by commercial cruise from Cairns.

Whichever island you choose, book ahead if you can — especially in peak season. The earliest departures are typically the first to fill, and turning up hoping for a same-day spot is a gamble you don’t need to take on a limited holiday.

Why are these islands protected? World Heritage waters, different rules

Fitzroy Island and Green Island both sit inside the Great Barrier Reef World Heritage Area, and both are surrounded by waters with real legal protection — not just a name on a map. The Great Barrier Reef Marine Park Authority zones the entire Marine Park by activity: some zones allow fishing and collecting, others don’t. Green Island’s surrounding waters are managed as a Marine National Park (Green) Zone, one of the more strictly protected zone types — the kind of zoning where you can snorkel, dive, swim and boat, but you can’t fish or take anything from the reef. Queensland Parks and Wildlife Service confirms fishing is prohibited in Green Island’s waters for exactly this reason.

Fitzroy Island’s fringing reef sits within the broader Great Barrier Reef Marine Park protections too, with its own no-camping, no-campfire rules on land to protect the rainforest and granite habitat that gives the island its character.

The practical upshot for visitors: the reef you’re snorkelling at either island is actively protected, actively monitored, and part of the reason the Great Barrier Reef carries World Heritage status in the first place. Treating both islands gently — no touching coral, no feeding fish, no taking shells — keeps it that way.

Best time to visit

Fitzroy Island and Green Island sit close enough to Cairns that they share its broad climate pattern, even though reef and island conditions can vary from the mainland day to day. According to the Bureau of Meteorology’s long-term Cairns climate averages, the warmest, wettest months are January and February (mean maximums around 31.5°C, with 400mm+ of rain each month), while the cooler, drier months from June to August sit around 26°C with far less rain (as low as 27mm in August). Cairns records rainfall in every month of the year, so there’s no genuine “dry season” to bank on — the trend simply eases through the middle of the year.

For island walking specifically, the cooler months (June–September) make Fitzroy Island’s steeper tracks — Lighthouse Road and the Summit Track — a noticeably more comfortable climb. For snorkelling at either island, warmer water in the summer months is a trade-off against heavier rain and stronger tropical humidity.

Continental island or coral cay? Why the geology is so different

This is the single biggest reason Fitzroy Island and Green Island feel so different to visit, and it comes straight from how each one formed.

Fitzroy Island is a continental island — in plain terms, it’s a chunk of the mainland’s granite that was cut off when sea levels rose thousands of years ago. That’s why it has real elevation (a 269m summit), exposed granite boulders, rainforest gullies and even mangroves, alongside its coral fringing reef and beaches. According to Queensland Parks and Wildlife Service, the island’s landscape is made up of “granite outcrops, open woodlands, rainforest, mangroves and coral beaches” — a genuinely varied terrain packed into one island.

Green Island is a true coral cay — a completely different kind of island that was built, not cut off. Queensland Parks and Wildlife Service describes it as “a true coral cay formed over thousands of years by the build-up of sand and coral rubble deposited on the calm side of a platform reef.” There’s no rock, no elevation and no mainland geology at all — just sand, coral rubble and, over time, enough soil for a rainforest canopy to take hold on top. At just 12ha, you can walk around the whole thing in well under an hour.

Neither is “better” geology — they’re simply different products. A continental island gives you elevation, hiking and varied terrain. A coral cay gives you a small, flat, easy-to-explore footprint sitting right on top of the reef itself.

That same geology shapes what’s happening underwater around each island, too. Fitzroy Island’s fringing reef drops into deep water passages on all sides of the island — but in its sheltered bays, the coral itself sits right at the shoreline in shallow water. Green Island’s coral cay sits on a broad, shallow platform reef instead, so its beaches slope out gradually across sand and seagrass rather than dropping away.

Walking tracks and hiking: which island has more to explore?

If getting out and walking is part of why you’re visiting, this is where Fitzroy Island and Green Island really part ways.

Fitzroy Island’s national park has 4 signed walking tracks, all within Queensland Parks and Wildlife Service’s official grading:

• Secret Garden track — 700m return, allow 25 minutes. A short rainforest walk past granite boulders to a viewing platform over a seasonal creek.
• Nudey Beach track — 1.2km return, allow 45 minutes. Rainforest and coastal woodland walking to one of Australia’s most photographed beaches.
• Lighthouse Road — 3.6km return, allow 2 hours. A steeper concrete wheel track through rainforest, with ocean views and the chance of whale sightings in winter.
• Summit Track — 4km return (including part of Lighthouse Road), allow 3 hours. Climbs to the island’s 269m summit through granite slabs and casuarina trees, with panoramic views over the island and reef.

Green Island’s walks are built for a much smaller footprint. Queensland Parks and Wildlife Service lists a beach walk, a jetty walk and a boardwalk through the island’s rainforest interior, showcasing native plants and resident birds. None are officially timed or measured at any real length — because on a 12ha cay, there simply isn’t the room. It’s a stroll, not a hike.

If you want a proper walk with a summit view and a few hours of variety, Fitzroy Island is built for it. If you want to stretch your legs for 10–15 minutes between snorkels, Green Island’s short walks suit that instead.

Snorkelling and marine life

Both islands sit inside the Great Barrier Reef World Heritage Area and both give you reef access without a long boat trip.

At Fitzroy Island, the fringing reef around Welcome Bay and off Nudey Beach is where most snorkelling happens, with Queensland Parks and Wildlife Service noting diverse fish species living on the coral right off the beach. Sunlover’s Fitzroy Island day packages also include a glass-bottom boat for guests who’d rather stay dry and still see the reef.

Green Island sits on its own platform reef and is surrounded by coral on every side, which Queensland Parks and Wildlife Service credits with supporting clownfish, corals, clams, stingrays and both green and hawksbill turtles — including turtles regularly spotted right from the jetty. The surrounding waters are protected as a Marine National Park (Green) Zone, meaning fishing is prohibited and the reef is managed specifically for conservation and low-impact recreation like snorkelling, swimming and diving.

Because Green Island is smaller and entirely surrounded by reef, snorkelling is available close to shore in almost any direction. Fitzroy Island’s snorkelling is more concentrated around specific bays, but is paired with the option of walking to a lookout or beach in between.

There’s also a real practical difference in how far you have to swim to actually see coral. At Fitzroy Island’s sheltered snorkelling bays, the reef starts close in — coral sections within around 10m of the shoreline, in shallow water you can walk straight into. At Green Island, the beach slopes out gradually across a wide, shallow stretch of sand and seagrass with comparatively little coral right at the shore, so reaching the reef itself typically means a longer swim out. Self-guided snorkelling is available at both islands, but if wading in and finding coral within a few strokes matters to you, that’s a point in Fitzroy Island’s favour.

Wildlife and nature: turtles, birds and butterflies

Fitzroy Island’s standout for wildlife lovers is its turtle rehabilitation centre, where sick and injured sea turtles recover before being released back to the reef — meeting the resident turtles is a highlight for many visitors, and something Green Island doesn’t offer. On land, Queensland Parks and Wildlife Service notes Fitzroy Island is home to Ulysses butterflies and monitor lizards, alongside the marine stingers and crocodile warnings typical of tropical North Queensland waterways (crocodiles are a general regional caution, not a common sighting on the island itself).

Green Island’s wildlife story is mostly about birds. Queensland Parks and Wildlife Service records more than 35 species of seabirds and 28 species of forest birds on the island, plus resident buff-banded rails wandering the boardwalk. Add the green and hawksbill turtles visible from the jetty and the reef life just offshore, and a small island punches well above its size for nature spotting.

History: from a 1770s naming to one of Queensland’s oldest national parks

Fitzroy Island has a genuinely layered history. Lieutenant (later Captain) James Cook gave the island its current name in 1770. It later became a quarantine station for Chinese arrivals heading to the Palmer River Goldfields in 1876. A carbide gaslight was installed on Little Fitzroy Island in 1923, followed by a wartime light in 1943, before the current lighthouse was built on the main island in 1970 — reportedly the last staffed lighthouse purpose-built in Australia, and possibly the world. The island itself was gazetted as national park in July 1989.

Green Island’s history runs even further back as a protected area. It was gazetted as national park in 1937, well before Fitzroy — one of Queensland’s oldest island national parks. It gained marine park status in 1974, was folded into the Great Barrier Reef Marine Park in 1975, listed as World Heritage in 1981, and had its recreation area formally declared in 1990 (extending 1.6km beyond the reef edge). Queensland Parks and Wildlife Service also recognises the Guru-Gulu Gungandji Aboriginal people as Traditional Owners of the island, known to them as Wunyami, with a tourism history stretching back more than a century.

Facilities, dining and accessibility

Fitzroy Island has the larger footprint of visitor infrastructure: a resort, Foxy’s (the island’s casual eatery), a kiosk, day-use picnic areas and the turtle centre. A picnic box is included if you book the Best of Island package; otherwise you can grab lunch at Foxy’s or bring your own. It’s set up for a full day, or longer if you’re staying at the resort.

Green Island’s facilities are simpler but well-equipped for a day visit: refreshments, toilets, showers, a patrolled swimming beach, and watersports and snorkelling equipment hire through the resort and beach hire hut. Queensland Parks and Wildlife Service notes wheelchair access is available, though it may require assistance in places.

Neither island permits camping or campfires — both are day-use national parks (with Fitzroy Island Resort the exception for overnight stays on that island).

A day trip to Fitzroy Island: what to expect

A typical Sunlover day at Fitzroy Island starts with the 45-minute fast catamaran crossing from Cairns. Once you’re on the island, the day is yours to shape — snorkel Welcome Bay or Nudey Beach, take the glass-bottom boat if you’d rather stay dry, walk one of the 4 national park tracks, or simply settle in on the beach. If you’ve booked the Best of Island package, lunch is a picnic box included in your fare; otherwise, grab something at Foxy’s or bring your own. A visit to the turtle rehabilitation centre — home to sick and injured sea turtles recovering before release — rounds out the day for most families, with tour times available to check once you arrive.

Because the island packs rainforest, granite peaks, coral beaches and a working turtle centre into one place, it suits a genuinely flexible day: as active or as relaxed as you want to make it, in a way a smaller island can’t quite match.

Photography: Nudey Beach and Green Island’s boardwalk

Fitzroy Island’s Nudey Beach — reached via the 1.2km return track through rainforest and coastal woodland — is regularly described as one of Australia’s most photographed beaches, and it’s easy to see why once you’re standing on it: fine white sand, granite boulders framing the bay, and coral visible in the shallows. It rewards the short walk in with a view that’s rarely crowded compared to the main beach near the resort.

Green Island’s photography strength is different — its boardwalk winds through genuine rainforest canopy on a coral cay, a slightly surreal combination you don’t get elsewhere on the reef, and the jetty offers reliable turtle sightings for anyone hoping to capture one in the wild without a dive.

What does a Fitzroy Island day trip cost?

Sunlover’s current Fitzroy Island pricing (per person, valid for travel from 1 April 2026 to 31 March 2027; family = 2 adults + 2 children aged 4–15, with the second child free):

• Return ferry only — $109 adult / $63 child / $281 family
• Island Essentials Package — $134 adult / $85 child / $353 family
• Island Value Package — $166 adult / $110 child / $442 family
• Best of Island Package — $202 adult / $137 child / $541 family
• Reef & Island in a Day (Moore Reef pontoon in the morning, the afternoon on Fitzroy Island) — $347 adult / $195 child / $889 family, fuel levy included

Fitzroy Island fares don’t carry a fuel levy; Reef & Island in a Day does, and it’s already included in the price above.

So which island should you choose?

There’s no wrong answer — it depends on what kind of day you’re after.

• Choose Fitzroy Island if: you want a proper walk or hike, a mix of rainforest and beach, a turtle-centre visit, resort-style dining, or you want to combine it with a morning on the Outer Great Barrier Reef in a single day.
• Choose Green Island if: you want a short, easy visit with minimal walking, you’re keen on birdwatching, or you want to visit one of Queensland’s oldest protected islands.
• Can’t decide? Sunlover’s Reef & Island in a Day tour is currently the only way to pair the Outer Reef with Fitzroy Island in one trip — the closest thing to “both” that a single day allows.

Sources: Queensland Parks and Wildlife Service — Fitzroy Island National Park and Green Island National Park park guides (about, things-to-do). Great Barrier Reef Marine Park Authority — Marine Park zoning framework. Bureau of Meteorology — Cairns Aero climate averages (station 031011). Pricing per Sunlover Reef Cruises, current price list, travel 1 April 2026 – 31 March 2027.