MARINE REPORT / 72 HOURS

Cairns Snorkel Report Today

Australia · Updated Sun 23:22 (AEST) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 23:22 (AEST)

Cairns has a usable snorkeling window around Mon 10:00. The main thing to watch is waves.

Right now (forecast)

Poor · 0.0/10

Mon 00:00 (AEST)

Later today

Good · 7.1/10

Mon 17:00 (AEST)

Next three days

Excellent · 7.9/10

Wed 18:00 (AEST)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 7.1/10

Best time: Mon 10:00

Main risk: Waves

Best morning signal: Mon 11:00 (Good).

Best afternoon signal: Mon 17:00 (Good). Peak afternoon wind is about 3.2 m/s.

Later today looks usable around Mon 10:00. Check boat availability.

Email me when it is good Compare nearby spots Check boat availability

Best nearby spots later today

Hastings Reef 6.6/10 Good · Mon 17:00 Michaelmas Cay 6.5/10 Good · Mon 10:00 Fitzroy Island 6.5/10 Good · Mon 11:00

Plan your visit

These notes help with planning. Rules and closures can change.

Open map

AccessCairns is a gateway. Green Island, Fitzroy Island and the outer reefs have their own wind and swell. Open those reports before you leave the harbour.

ParkingParking and boat-harbour rules vary by operator and town. Use marked spaces and never block ramps or residents.

ReservationsMany of the best reefs here are boat-only. Book a permitted operator and ask about weather cancellations.

ClosuresWind, swell, and park rules can close a site even when the town beach looks calm. Check the official source before entering.

Marine lifeDo not touch, chase, or feed marine life. Stay off coral and follow local park rules.

Great Barrier Reef Marine Park Authority

Sunrise

05:38

Sunset

18:21

Water

28.6°C

Max air

29.2°C

Sky

Cloudy

93% cloud

Good model window in the next 72 hours

Next good model window: Mon 10:00–18:00 (39% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Monday

✅ Good conditions

Main blocker: Waves

Tuesday

✅ Good conditions

Main blocker: Darkness

Wednesday

✅ Excellent conditions

Main blocker: Darkness

Best available hours

The next good model window starts at Mon 10:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Darkness (42 hours)
  • Tide/current (26 hours)
  • Waves (14 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 31/100

Low peak drift risk around Mon 15:00.

warm water supports seasonal jellyfish activity; surface drift/current is noticeable; local shoreline exposure is not mapped yet.

Sightings override the model: if you see small purple jellyfish with long trailing tentacles, treat them as sting-capable and give them space.

Upcoming high tides

Next early morning high tide: Mon 04:00

Mon 04:00, Mon 16:00, Tue 05:00, Tue 17:00, Wed 05:00, Wed 17:00

Bookable snorkel tours near Cairns

Prices and availability from Viator. Check conditions before you book.

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MV Evolution - the regions most luxurious Outer Reef day cruise vessel

Great Barrier Reef Snorkeling and Diving Cruise from Cairns

4.7/5 3967 reviews 8h 30m
From USD 196.80 Check availability

Free cancellation available

Cairns Half Day Tour a Great Barrier Reef Snorkeling Experience

Cairns Half Day Tour a Great Barrier Reef Snorkeling Experience

4.8/5 541 reviews 4h
From USD 128.10 Check availability

Free cancellation available

Ocean Freedom: Great Barrier Reef Stylish Snorkel, Dive Reef Tour

Ocean Freedom: Great Barrier Reef Stylish Snorkel, Dive Reef Tour

4.8/5 2054 reviews 9h
From USD 159.77 Check availability

Free cancellation available

Afternoon Fitzroy Island Escape – Return Ferry Included

Afternoon Fitzroy Island Escape – Return Ferry Included

3.9/5 18 reviews 4h 30m
From USD 77.29 Check availability

Free cancellation available

Visit a pristine outer reef site

Premium Half-Day Outer Reef Snokel Tour

4.7/5 547 reviews 6h
From USD 139.55 Check availability

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Cairns Full-Day Great Barrier Reef Snorkel Tour

Cairns Full-Day Great Barrier Reef Snorkel Tour

4.8/5 427 reviews 9h
From USD 173.26 Check availability

Free cancellation available

Nearby snorkel spot map

Compare nearby spot forecasts for later today before choosing a beach.

Hastings Reef Good · Mon 17:00 6.6/10 Michaelmas Cay Good · Mon 10:00 6.5/10 Fitzroy Island Good · Mon 11:00 6.5/10 Green Island Good · Mon 17:00 6.1/10 Moore Reef Fair · Mon 18:00 5.4/10 Flynn Reef Fair · Mon 18:00 4.8/10

Forecast spot map

Use the map to see where the compared spots sit. Open a card for the hourly forecast.

Hastings Reef Michaelmas Cay Fitzroy Island Green Island Moore Reef Flynn Reef
  1. Hastings Reef
  2. Michaelmas Cay
  3. Fitzroy Island
  4. Green Island
  5. Moore Reef
  6. Flynn Reef

This is a location diagram, not a marine chart. Check the shore and local signs in person.

Nearby alternatives in Australia

Fitzroy Island

24 km away

✅ Good

Green Island

28 km away

✅ Good

Arlington Reef

38 km away

✅ Good

Michaelmas Cay

41 km away

✅ Good

Advanced forecast data

Viewing historical data

Sun 00:00 – Wed 00:00 (AEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.61 around Sun 11:00; 9 of 24 hours are good, fair, or excellent.

Score trend, higher is better. Excellent ≥ 0.72, good 0.55–0.72, fair 0.35–0.55.

Conditions (24h trends)

Tap a chart to load just that series.

0/24 sampled hours stay at or below 0.36m (range 0.44m to 0.52m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.04 to 3.55m/s).

Tides range from -0.08m to 1.55m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
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Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
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Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Scoring methodology (for technical users)

We score each hour from 0 to 1 using daylight and these weighted components:

  • Wave height (35%): best below 0.36m, then decreases as it rises.
  • Wind speed (25%): best below 5.4m/s, lower is better.
  • Sea surface temperature (15%): best within 20.6°C to 30.4°C.
  • Tide and currents (15%): best around slack/high-tide windows.
  • Daylight (10%): visibility is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Sun 00:00 0.48 · high 1.63 · good 28.40 · good Poor
Sun 01:00 0.48 · high 1.52 · good 28.30 · good Poor
Sun 02:00 0.48 · high 1.24 · good 28.30 · good Poor
Sun 03:00 0.48 · high 1.31 · good 28.30 · good Poor
Sun 04:00 0.48 · high 1.38 · good 28.30 · good Poor
Sun 05:00 0.48 · high 1.52 · good 28.30 · good Poor
Sun 06:00 0.48 · high 1.60 · good 28.30 · good Poor
Sun 07:00 0.48 · high 1.36 · good 28.30 · good Poor
Sun 08:00 0.48 · high 1.95 · good 28.30 · good Poor
Sun 09:00 0.48 · high 1.46 · good 28.30 · good Poor
Sun 10:00 0.48 · high 2.02 · good 28.40 · good Good
Sun 11:00 0.48 · high 2.60 · good 28.40 · good Good
Sun 12:00 0.50 · high 3.11 · good 28.50 · good Good
Sun 13:00 0.50 · high 3.29 · good 28.60 · good Fair
Sun 14:00 0.50 · high 3.10 · good 28.70 · good Fair
Sun 15:00 0.52 · high 3.55 · good 28.80 · good Fair
Sun 16:00 0.52 · high 3.10 · good 28.80 · good Fair
Sun 17:00 0.52 · high 2.51 · good 28.80 · good Fair
Sun 18:00 0.52 · high 2.21 · good 28.80 · good Good
Sun 19:00 0.52 · high 1.30 · good 28.70 · good Poor
Sun 20:00 0.52 · high 1.04 · good 28.70 · good Poor
Sun 21:00 0.44 · high 1.21 · good 28.60 · good Poor
Sun 22:00 0.44 · high 1.26 · good 28.50 · good Poor
Sun 23:00 0.44 · high 1.15 · good 28.50 · good Poor
Mon 00:00 0.44 · high 1.06 · good 28.50 · good Poor
Mon 01:00 0.44 · high 1.14 · good 28.50 · good Poor
Mon 02:00 0.44 · high 1.48 · good 28.40 · good Poor
Mon 03:00 0.44 · high 1.57 · good 28.40 · good Poor
Mon 04:00 0.44 · high 1.34 · good 28.40 · good Poor
Mon 05:00 0.44 · high 1.38 · good 28.40 · good Poor
Mon 06:00 0.42 · high 1.63 · good 28.40 · good Poor
Mon 07:00 0.38 · high 1.37 · good 28.40 · good Poor
Mon 08:00 0.38 · high 1.14 · good 28.40 · good Poor
Mon 09:00 0.38 · high 1.60 · good 28.50 · good Poor
Mon 10:00 0.38 · high 2.16 · good 28.50 · good Good
Mon 11:00 0.38 · high 2.74 · good 28.50 · good Good
Mon 12:00 0.38 · high 3.02 · good 28.60 · good Good
Mon 13:00 0.38 · high 3.18 · good 28.60 · good Good
Mon 14:00 0.38 · high 2.95 · good 28.70 · good Good
Mon 15:00 0.40 · high 2.96 · good 28.70 · good Good
Mon 16:00 0.40 · high 2.58 · good 28.80 · good Good
Mon 17:00 0.40 · high 2.13 · good 28.80 · good Good
Mon 18:00 0.40 · high 2.02 · good 28.80 · good Good
Mon 19:00 0.40 · high 0.74 · good 28.80 · good Poor
Mon 20:00 0.40 · high 0.35 · good 28.80 · good Poor
Mon 21:00 0.38 · high 0.07 · good 28.80 · good Poor
Mon 22:00 0.38 · high 0.57 · good 28.70 · good Poor
Mon 23:00 0.38 · high 0.79 · good 28.70 · good Poor
Tue 00:00 0.36 · good 0.74 · good 28.70 · good Poor
Tue 01:00 0.36 · good 0.39 · good 28.60 · good Poor
Tue 02:00 0.36 · good 0.49 · good 28.60 · good Poor
Tue 03:00 0.36 · good 0.63 · good 28.60 · good Poor
Tue 04:00 0.36 · good 0.57 · good 28.60 · good Poor
Tue 05:00 0.36 · good 0.63 · good 28.60 · good Poor
Tue 06:00 0.34 · good 0.57 · good 28.60 · good Poor
Tue 07:00 0.34 · good 0.64 · good 28.60 · good Poor
Tue 08:00 0.36 · good 1.05 · good 28.60 · good Poor
Tue 09:00 0.34 · good 1.95 · good 28.60 · good Poor
Tue 10:00 0.34 · good 2.42 · good 28.60 · good Good
Tue 11:00 0.34 · good 2.50 · good 28.70 · good Good
Tue 12:00 0.32 · good 2.71 · good 28.70 · good Good
Tue 13:00 0.32 · good 2.82 · good 28.80 · good Good
Tue 14:00 0.32 · good 2.84 · good 28.90 · good Good
Tue 15:00 0.32 · good 2.51 · good 28.90 · good Good
Tue 16:00 0.32 · good 2.44 · good 29.00 · good Good
Tue 17:00 0.32 · good 2.36 · good 29.00 · good Good
Tue 18:00 0.30 · good 1.72 · good 28.90 · good Excellent
Tue 19:00 0.30 · good 0.83 · good 28.90 · good Poor
Tue 20:00 0.30 · good 0.47 · good 28.90 · good Poor
Tue 21:00 0.30 · good 0.22 · good 28.90 · good Poor
Tue 22:00 0.30 · good 0.30 · good 28.80 · good Poor
Tue 23:00 0.30 · good 0.46 · good 28.80 · good Poor