Cairns Great Barrier Reef Tours Green Island

A laid-back reef day from Cairns

Green Island is a coral cay with a forested centre, white sand and a reef edge that you can reach on foot from the beach. It sits 27 kilometres off Cairns and the catamaran crossing takes about 45 minutes^[2], so the day does not disappear into transit. The full-day cruise from Cairns is the simplest way to see it: the tour runs for 8 hours and comes with a live English-speaking guide^[1]. That makes it a good pick for families, couples and anyone who prefers one straightforward booking.

You do not need to be a strong swimmer to enjoy Green Island. The island has a protected side where the water is calm, and the reef starts right at the sand. The boat trip is short enough to leave plenty of time on the island, and the return schedule is a single day rather than an overnight commitment. Once you are there, you can walk the beach, shade under the trees or slip into the water for your first look at tropical fish.

What the full-day cruise offers

The From Cairns: Full-Day Green Island Cruise is listed from US$77^[1]. It lasts 8 hours^[1] and comes with a live tour guide who speaks English^[1]. You can reserve now and pay later, and cancellation is free up to 24 hours in advance for a full refund^[1], which makes it an easy booking to hold even if your plans are not final. Start by checking availability for the date you want, as starting times vary. GetYourGuide travellers give it an overall rating of 4.48 from 1,692 reviews^[1].

The standard Reef Environmental Management Charge is currently $8.50 per person for reef trips of three hours or more^[5]. The full-day cruise runs 8 hours^[1], and the standard charge applies to trips of that length. Confirm at the time of booking whether the fee is already included in the price, as operators handle this in different ways. With the base price from US$77^[1], the day remains a budget-friendly reef option from Cairns.

Green Island is a coral cay with a protected lagoon and a reef that starts at the sand.

Green Island or outer reef?

Green Island is close to Cairns, which keeps travel time short. A modern catamaran from Cairns to the outer reef takes about 90 minutes one way^[10], while Green Island is only 27 kilometres offshore and about 45 minutes away^[2]. The outer reef pontoons, such as Moore Reef, are moored about 40-50 kilometres offshore^[11]. A Green Island day keeps the boat ride shorter, leaving more time on the island.

If you want a full all-inclusive day with a scuba dive, the Cairns: Best Value All-inclusive Reef Trip With Scuba Dive starts from US$196 and is a solid alternative^[12]. It visits the outer Great Barrier Reef rather than a coral cay, and the tour runs for one day with English-speaking instruction^[12]. Choose that when diving is the main goal; choose Green Island when you want a beach-and-reef mix with a shorter crossing.

When to go and what to wear

Cairns has two main seasons. The dry season runs from May to October, and the wet season runs from November to April^[3]. The dry season brings sunny skies, low humidity and warm, comfortable days, while the wet season is hot and humid with frequent afternoon showers^[3]. For a reef trip, the dry season is the most comfortable window, but boats run year-round and each season has its own atmosphere.

From November through to May, tropical Queensland is in the marine stinger season, when the risk from dangerous jellyfish is higher^[4]. Pack a rash shirt and follow the crew's advice about stinger suits. Sun protection matters on any reef day, and a light layer helps against the sea breeze. Water temperatures on northern reef dive areas range from 24°C/75°F in winter to 30°C/86°F in summer^[9], so a thin wetsuit or lycra suit is enough for most people.

Getting to the terminal

Reef boats from Cairns depart from the Reef Fleet Terminal at 1 Spence Street, Cairns^[8]. The terminal sits on the waterfront, close to the city centre, and is an easy walk from many hotels. For a full-day cruise, plan to arrive before the published departure time; the tour is listed as 8 hours long^[1], starting times vary, and the crew will want everyone checked in before loading.

If you are staying outside the city, ask your accommodation about the best way to reach the terminal. Leave extra time for parking or a taxi, and check with the operator about meeting arrangements. Being at the terminal early also gives you a chance to check the day's conditions, meet the crew and settle any questions about snorkelling or reef safety before you board.

There is also plenty to do beyond the beach. You can walk the island's forest trail, find quiet spots away from the main jetty, or simply sit and watch the tide move over the reef. Exact activities depend on weather and tide, so keep the schedule loose. The full-day cruise leaves room for that unhurried pace.

Costs, booking and flexibility

The full-day Green Island cruise is from US$77^[1]. You can reserve now and pay later, and you can cancel up to 24 hours in advance for a full refund^[1]. The Reef Environmental Management Charge is currently $8.50 per person for reef trips of three hours or more^[5], so check whether that is included in the ticket price before you compare with other trips.

If you want a shorter day, the half-day morning cruise from Cairns costs from US$77 and runs 4 hours^[6], while a later-start option costs from US$77 and runs 6 hours^[7]. Both have a live English-speaking guide^[6][7]. The full-day version gives you more time on the island, and its from price is the same as the shorter options, which makes it an easy recommendation.

Once your dates are firm, book early to lock in the day you want. Peak-season places can fill quickly, and the free cancellation window makes it easy to shift if something changes. Even if you decide to book later, the reserve-now-pay-later option means you can secure a spot without paying today.^[1]

A reef worth protecting

The Great Barrier Reef is the world's largest coral reef system, spanning more than 2,300 kilometres along the northeast coast of Australia and made up of some 3,000 individual coral reefs^[13]. It is home to over 1,600 species of fish and over 600 species of corals^[14]. A trip to Green Island is also a chance to see why that diversity matters.

On the northern Great Barrier Reef, hard coral cover increased from 30.0% in 2025 to 35.1% in 2026^[15], a reminder that the reef is still a living system. Choose a tour that follows responsible reef etiquette: use reef-safe sunscreen, do not stand on coral, and listen to the crew. From Cairns, the reef is an easy day trip, and Green Island makes that first visit feel effortless.

Even if you stay dry, the island gives you a window into a much bigger ecosystem. The water is clear enough in the shallows to see fish moving over coral, and the lagoon changes with the tide. Once you have seen it, you will understand why so many people come back to this part of Queensland.

Plan your Green Island day

1. Choose your cruise

   The full-day cruise is listed from US$77, runs 8 hours, and has a live English-speaking guide.^[1]

2. Meet at the terminal

   Reef boats from Cairns depart from the Reef Fleet Terminal at 1 Spence Street.^[8]

3. Reach the island

   Green Island is 27 kilometres off Cairns and the catamaran crossing takes about 45 minutes.^[2]

4. Pay the reef fee

   The Reef Environmental Management Charge is $8.50 per person for trips of three hours or more.^[5]

5. Know the season

   The dry season runs from May to October, and the wet season from November to April.^[3]

6. Pack for the day

   Stinger season runs from November through to May, so take a rash shirt and sun protection.^[4]

Worth knowing