Diving the Great Barrier Reef and Coral Sea from Singapore

Southern hemisphere, so the calendar inverts: the good months are the ones that are cold at home.

Best months: Jun–Oct
Also good: May, Nov
From Singapore: ~16h 42m each way
On the map: 24 dive sites

When to go

Prime

October is as good as it gets here.

The year here

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Best here: June, July, August, September, October.

The Great Barrier Reef and Coral Sea — no monsoon here; the season is rain and water temperature. Written by hand from how the season actually runs, calibrated against what the boats do, since a season that disagrees with the operators is wrong however good the meteorology behind it. It describes most years, not this one: the forecast above is what knows about next week.

Wet season and stingers (Nov–May) — Cyclones, runoff onto the inshore reef, and box jellyfish — a full-body suit is compulsory rather than advisable.

Where to dive in The Great Barrier Reef and Coral Sea

The sites · 24 sites

Admiralty Anchorage
Agincourt Reef No. 1 - Trigger Fish City
Castle
Challenger Bay
Clipper
Cod Hole
Cruise Whitsundays Pontoon
Down Under Diving
Flare Point
Goggle Gardens
Halfway Wall
Light Reef
and 12 more on the map

Every site opens onto this week's sea forecast and the marine life seen there. See them on the map →

Getting there from Singapore

~16h 42m

door to water, each way · 4 legs

FlightCairns (CNS)~9h 12mFlight time plus the airports at both ends. A connection adds to it.Find flights →
Transferthe jetty~5hRoad transfer to the coast, usually arranged by the resort or liveaboard.Directions →
Ferrythe crossing~2hAt this distance the last stretch is a scheduled crossing rather than a dive boat, so book it before the flight — a missed sailing usually costs a day. Which crossing it is has been worked out from the distance and not from a timetable; ask the operator.
Dive boatAdmiralty Anchorage~30 minThen the dive boat out from the island.

📍 Admiralty Anchorage on Google Maps 🧭 Route from Cairns

Times marked ~ are estimated from straight-line distance and will be roughly right at best. The road legs are the ones Google Maps answers properly; it will not plan the ferry or the dive boat at all. A dive site's coordinates put a pin in open water, so the map link drops you on the site, not on a jetty.

Is it good right now?

The forecast for Admiralty Anchorage shows this week's swell and wind — and you can ask to be told when it looks good. Or see where to dive this month.

Planning The Great Barrier Reef and Coral Sea with friends?

Hear when a site looks goodFollow any dive site and we'll tell you when a good spell is on the forecast.
Plan trips with your groupEveryone answers going, maybe or can't, and the club calendar shows the dates most people can make.
Join a trip from the group chatTap “Count me in” on a shared trip link and you're in the club and down as going.
Keep a log bookLog your dives with the conditions you found, which become your group's reports on that site.
Your group's own spacePosts, photos and private messages, seen by members only.
Add missing dive sitesPut a site the map doesn't have yet where the boat actually goes.

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