Great Barrier ReefSNORKEL TOUR
Port Douglas · 11 reef tours compared

Great Barrier Reef Snorkel Tour Port Douglas

Port Douglas has 11 reef trips on GetYourGuide — out to Agincourt Reef on the outer reef, about 90 minutes away, or to Low Isles, a coral cay 15–30 minutes from the marina.

What kind of day?
Agincourt reef5 tours
· from A$319Low Isles5 tours
· from A$190
Updated Oct 2026 · Prices checked Oct 2026
Reef boat over Agincourt Reef off Port DouglasPort Douglas outer reef cruise · rated 4.94 (889)
Silversonic (Agincourt) — Port DouglasOUR PORT DOUGLAS PICK · MOST REEF TIME
OUR PORT DOUGLAS PICK · MOST TIME ON THE REEF★ 4.80 (437)

Silversonic (Agincourt)

Port Douglas · 8 h · 3 Agincourt sites · guided snorkelPort Douglas · 8 h · ★ 4.80 (437)
5h
5 h at the reefof an 8 h day
From · per personA$328≈US$226 · per personCheck dates
11reef tours leave Port Douglas
≈90minutes by boat to Agincourt Reef
15–30minutes to Low Isles
4.94top rating, 889 reviews
The short answer

From Port Douglas most people go to Agincourt Reef: A$319–329 for a full day, and Silversonic and Poseidon list 5 hours at three sites. Low Isles is closer and calmer — from A$190 for a short trip, A$365 for a full day on a luxury catamaran.

See the 5 Agincourt trips →
Key takeaways
  1. 1

    11 reef tours leave Port Douglas; most board at the Crystalbrook Superyacht Marina, 44 Wharf St.

  2. 2

    Most time on the reef: Silversonic and Poseidon, 5 h at three Agincourt sites.

  3. 3

    Top rated: Port Douglas outer reef cruise, 4.94 from 889 reviews.

  4. 4

    Cheapest: Low Isles reef snorkel from A$190 — a 2¼-hour trip.

  5. 5

    Low Isles is 15–30 min away; Agincourt Reef about 90 min.

By kind of day

Port Douglas Great Barrier Reef Snorkel Tour Options, by Kind of Day

Two kinds of reef day leave Port Douglas. Choose one — the list shows only tours with a 4.0+ rating and 20+ reviews, most reviewed first.

Agincourt snorkel & dive — Port Douglas

Agincourt snorkel & dive

7.5 h· Crystalbrook Marina★ 4.84 (533)
not stated
Reef time not stated3 sites · pickup available
From · per personA$319≈US$220 · per personCheck dates
Poseidon (Agincourt) — Port Douglas

Poseidon (Agincourt)

8 h· Crystalbrook Marina★ 4.85 (34)
5h
5 h at the reef3 Agincourt sites
From · per personA$328≈US$226 · per personCheck dates
Agincourt platform + helicopter — Port Douglas

Agincourt platform + helicopter

7 h· Crystalbrook Marina★ 4.66 (24)
5h
5 h at the reef+ 10-min helicopter flight
From · per personA$540≈US$373 · per personCheck dates
Source: GetYourGuide tour pages · checked Oct 2026 · time on the reef as each tour page states it
Shortlist · 11 tours

Find Your Port Douglas Great Barrier Reef Snorkel Tour in Two Taps

Tell us what matters most — we show the top 5, not all 11.

1What matters most?
2Kind of day
1Most time on the reefSilversonic (Agincourt)Agincourt reef · 8 h · Crystalbrook Marina5h5 h at the reef★ 4.80 (437)A$328Check dates
2Most time on the reefPoseidon (Agincourt)Agincourt reef · 8 h · Crystalbrook Marina5h5 h at the reef★ 4.85 (34)A$328Check dates
3Most time on the reefAgincourt platform + helicopterAgincourt reef · 7 h · Crystalbrook Marina5h5 h at the reef★ 4.66 (24)A$540Check dates
4Most time on the reefLow Isles catamaran dayLow Isles · 8 h · Crystalbrook Marina4.5h4.5 h on Low Isles★ 4.85 (109)A$365Check dates
5Most time on the reefLow Isles reef snorkelLow Isles · 2.25 h · Crystalbrook Marina1.5h1.5 h at Low Isles★ 4.56 (71)A$190Check dates
Source: GetYourGuide · prices checked Oct 2026 · A$ = Australian dollars, per person · tours with under 20 reviews appear only in the full list
Low Isles vs Agincourt

Low Isles or Agincourt Reef: Which Great Barrier Reef Snorkel Tour from Port Douglas?

Low Isles coral cay from the airLow Isles5 trips · from A$190
vs
Reef boat over Agincourt ReefAgincourt Reef5 day trips · from A$319
better15–30 min
Boat ride
About 90 min each way
Up to 4.5 h on the island (catamaran day)
Time in the water
5 h at three sites on Silversonic and Poseidonbetter
A coral cay with a fringing reef and a lagoon
What you see
Outer reef — reviewers mention giant clams, turtles and tropical fishbetter
betterGlass-bottom boat, walk around the cay
Not snorkelling?
A reef platform day with a helicopter option
betterA$190
From
A$319
5 Low Isles trips
Choice
5 Agincourt trips

Pick Low Isles if you have kids, non-swimmers or only half a day.

Low Isles
✓ = better on this point

Pick Agincourt if you want the outer reef at its best.

Agincourt
Short trips

Low Isles Great Barrier Reef Snorkel Tour from Port Douglas

Three short Low Isles trips are back in 2¼–4 hours — a speedboat, a half-day lagoon snorkel or a glass-bottom boat.

Low Isles coral cayOr a full day on Low Isles — luxury catamaran, 4.5 h on the island, from A$365. See all Low Isles trips →
1 / 3swipe for more
Low Isles reef snorkel — Port Douglas

Low Isles reef snorkel

2.25 h trip · 15-min speedboat · ★ 4.56 (71)
1.5h
1.5h1.5 h at Low Isles15-min speedboat
From · per personA$190≈US$131 · per personCheck dates
Low Isles half-day speedboat — Port Douglas

Low Isles half-day speedboat

3.5 h trip · half-day · lagoon · ★ 4.85 (37)
2h
2h2 h at Low Isleshalf-day · lagoon
From · per personA$250≈US$172 · per personCheck dates
Low Isles glass-bottom & snorkel — Port Douglas

Low Isles glass-bottom & snorkel

4 h trip · glass-bottom boat · 30-min ride · ★ 4.65 (555)
not stated
not statedReef time not statedglass-bottom boat · 30-min ride
From · per personA$246≈US$170 · per personCheck dates
Low Isles coral cayOr a full day on Low Isles — luxury catamaran, 4.5 h on the island, from A$365. See all Low Isles trips →
Before you book

What to Know Before a Great Barrier Reef Snorkel Tour from Port Douglas

Stinger seasonNov – May

Trips keep running; full-body lycra suits are usually provided on board.

Reef taxA$8.50

Environmental Management Charge for a full day. Most tickets include it — check “Includes”.

Wet seasonNov – Apr

Heaviest rain Jan–Mar. Rough seas can cancel or shorten a day.

Intro divesAge 12+

Usually from 12. Most snorkel tours take children with flotation.

Where you board: most tours leave from the Crystalbrook Superyacht Marina (44 Wharf St, Port Douglas). A few offer hotel pickup — your ticket names the meeting point.

Source: GBRMPA, reef operators · checked Oct 2026Port Douglas prices →
Reviews

What Travellers Say About Port Douglas Great Barrier Reef Snorkel Tours

4.78★★★★★
average of 10 Port Douglas tours
2,797 GetYourGuide reviews10 Port Douglas tours · 2,797 reviews
Heads-up from reviewers

“The only downside was too much sugar. I would have appreciated fruit after swimming instead of cookies…” — Nancy, Port Douglas outer reef cruise

1 / 4swipe for more

“…beautiful snorkeling spots. Super fun and knowledgeable staff on the boat who provided good guidance in the sea.”

PPeter · GetYourGuide review
Port Douglas outer reef cruise

“A fantastic day out on the reef - 3 stops - all spectacular! The crew was great - the food very good…”

PPeter · GetYourGuide review
Silversonic

“…plenty of time in the water snorkeling amongst tropical fish, intricate coral, giant clams…”

AAnne · GetYourGuide review
Port Douglas outer reef cruise

“Well organized, motivated staff, good equipment. Both snorkeling and diving was very good on all three spots.”

BBoerge · GetYourGuide review
Silversonic
Heads-up from reviewers

“The only downside was too much sugar. I would have appreciated fruit after swimming instead of cookies…” — Nancy, Port Douglas outer reef cruise

Quotes from GetYourGuide reviews · Oct 2026

Not set on Port Douglas?

Great Barrier Reef Snorkel Tour Towns Near Port Douglas

CairnsSouth along the coastCairns46 tours · from A$108
Cape TribulationDaintree coast, further northCape Tribulation1 tour · from A$217
Airlie BeachWhitsundaysAirlie Beach12 tours · from A$239
FAQ

Port Douglas Great Barrier Reef Snorkel Tour FAQ

How long is the boat ride from Port Douglas to the reef?

About 90 minutes each way to Agincourt Reef on the outer reef. Low Isles is much closer — 15 to 30 minutes, depending on the boat.

Which Port Douglas tour gives the most time on the reef?

Silversonic and Poseidon both list 5 hours at three Agincourt sites. The Agincourt platform day with a helicopter flight also lists 5 hours.

Low Isles or Agincourt Reef?

Agincourt is the outer reef — bigger coral and open-water fish, a longer ride and A$319+. Low Isles is a small coral cay close to shore: calmer, cheaper and good with kids.

Can non-swimmers do a reef tour from Port Douglas?

Low Isles with the glass-bottom boat is the easiest choice. Check each tour’s rules — the Port Douglas outer reef cruise asks that guests can swim 50 m without a flotation device.

Where do Port Douglas reef tours leave from?

Most board at the Crystalbrook Superyacht Marina, 44 Wharf St. A few offer hotel pickup.

What is the cheapest reef trip from Port Douglas?

The Low Isles reef snorkel from A$190 (about 2¼ hours). Outer reef days to Agincourt start at A$319.

Port Douglas or Cairns for snorkelling?

Cairns has far more choice (46 tours) and outer reef days from A$230. From Port Douglas, Agincourt days start at A$319 and two of them list 5 hours at three sites.

Can I see the reef from the air from Port Douglas?

Yes — the Agincourt platform day adds a scenic helicopter flight, from A$540.

Check dates and live prices ↓
Ready?

Check Dates for a Great Barrier Reef Snorkel Tour from Port Douglas

Port Douglas pick · Silversonic · ≈US$226from A$328
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