Martin Island

New South Wales, Australiareef20 m maxintermediate

Conditions & tides

Martin IslandNew South Wales

Fair · 4/5

conditions visualisation

Fair4/5

Some chop right now — best window today 8 AM.

Wind25 kn SSW

Current~0.4 kn NNE · model

Swell

1.4 m · 7s · SSE

Water

19 °C

Max depth

20 m

Conditions through the day

7 AM7 PM

Calmest current near slack — 14:45 & 02:30 local

Sunrise 05:49 · Sunset 19:31 local

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Tide · local

Outlook — select a day for full conditions

On-face swell 0.0 m — the component of the swell aimed at this site’s exposed face. Current is a regional model value (Copernicus, ~9 km grid) — a guide to the area, not a precise reef measurement. Imagery © Esri · not depth or visibility.

Scored by DiveConnect's site-physics model

Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.

Dived here today? How were conditions vs. what we showed?

About this site

Martin Island is a reef dive site in Sydney's waters, accessible by boat, and notable for hosting a resident colony of seals.

The reef reaches a maximum depth of 19.5 m, with a bottom type of reef. The site suits beginner divers, though deeper sections carry medium current and require more care.

Martin Island's marine life includes weedy sea dragons, turtles, blue grouper, cuttlefish, nudibranchs, pygmy pipehorses, reef sharks, Port Jackson sharks, wobbegong, pomfrets, red Indian fish, eagle rays, giant cuttlefish, humpback whales, dolphins, and a colony of seals. Port Jackson sharks are more reliably seen in winter.

Read the full guide

Conditions vary with season and swell direction: the site is protected in northerly swells but exposed to southerlies greater than 1.2 m, which should be avoided. Water temperature ranges from 15–24°C year-round, and an incoming tide is preferred; the outgoing tide creates stronger currents in deeper sections. Visibility is generally good, benefiting from the site's offshore position. Hazards include fishing lines, sea urchins, southerly swells, and currents in deeper areas.

AI-written site guide