Cairns Boat Tours Ranked by Seasickness Risk

We scored 11 boat tours in Cairns from their listings. 5 tours of 11 score 2 or lower on our 1–5 seasickness risk scale. The calmest options are Snorkel & Dive the Reef: Sustainable, Scientific & Cultural Tour (Reef Magic); Cairns Catamaran Harbour and Dinner Cruise (Spirit of Cairns).

This score is our estimate from the listing’s description, not an operator figure. How we score.

TourSeasickness riskOperatorFrom
Snorkel & Dive the Reef: Sustainable, Scientific & Cultural Tour
“Glass-bottom boat and underwater observatory access”
 2/5Reef Magic$233Check dates
Cairns Catamaran Harbour and Dinner Cruise
“A 2.5 hour calm water evening cruise”
 2/5Spirit of Cairns$104Check dates
Snorkelling and Glass Bottom Boat at Green Island from Cairns
“Glass bottom boat tour”
 2/5The Quicksilver Group$112Check dates
Snorkelling or Glass Bottom Boat at Green Island from Cairns
“Choice of snorkelling equipment (mask, snorkel & fins) or glass bottom boat tour”
 2/5The Quicksilver Group$77Check dates
Green Island Reef Cruise - Half-Day Trip from Cairns
“Glass bottom boat tour (if selected)”
 2/5Big Cat Green Island Reef Cruises$79Check dates
Great Barrier Reef Snorkeling and Diving Cruise from Cairns
“Estimate from activity type”
 3/5Down Under Cruise and Dive$197Check dates
Ocean Freedom: Great Barrier Reef Stylish Snorkel, Dive Reef Tour
“Our vessels are open air with good boat movement so less likely to suffer seasickness than some other closed vessels however, if prone to motion sickness we recommend taking travel sickness tablets 20 minutes before…”
 3/5Cairns Premier Reef & Island Tours$160Check dates
Sunlover Great Barrier Reef Day Trip to Moore Reef Pontoon
“The crossing takes about 1 hour 45 minutes each way and can be rough.”
 3/5Sunlover Reef Cruises$220Check dates
Silverswift 3 Great Barrier Reef Sites in 1 Day from Cairns
“Estimate from activity type”
 3/5The Quicksilver Group$220Check dates
Passions of Paradise Great Barrier Reef Cruise by Catamaran
“Cruise aboard a stylish, modern high-speed catamaran”
 4/5Passions of Paradise$197Check dates
Great Barrier Reef Full Day Tour from Cairns
“Tours are subject to the risks and perils of scuba diving in changeable conditions in an open water environment.”
 4/5Divers Den$197Check dates

Questions

Which boat tour in Cairns is best if I get seasick?

Start with Snorkel & Dive the Reef: Sustainable, Scientific & Cultural Tour (Reef Magic); Cairns Catamaran Harbour and Dinner Cruise (Spirit of Cairns); Snorkelling and Glass Bottom Boat at Green Island from Cairns (The Quicksilver Group). Their listings describe the calmest water or most stable boats. Our score is an estimate from the listing text.

How up to date is this information?

We last checked these listings on 2026-11-02 and re-check every listing monthly. Operators can change their rules, so confirm before you book.

Restrictions come from each tour’s listing on GetYourGuide or Viator: the suitability notes, “Know before you go”, booking rules, and what is and isn’t included. Last checked 2026-11-02. Operators change rules, so confirm before you book.

More about boat tours in Cairns

Seasickness risk: boat tours elsewhere