What is the best time of day to snorkel in Great Barrier Reef?

Snorkel in daylight, if possible in the morning before the wind picks up. Currents are often weaker near high slack tide. SnorkelForecast scores each daylight hour for Great Barrier Reef.

What is the best tide for snorkeling?

High slack tide, within about an hour of the high-tide peak, often has weaker currents. Strong low tides and tidal flow near channels or headlands reduce the score.

Great Barrier Reef Snorkel Report Today

Australia · Updated Thu 21:57 (AEST) · Source: Snapshot

The skinny

Poor Data updated Thu 21:57 (AEST)

Great Barrier Reef has no good model window later today. Check the three-day outlook and official beach advisories.

Right now (forecast)

Poor · 0.0/10

Thu 22:00 (AEST)

Later today

No fresh data for this period.

Next three days

Poor · 3.5/10

Sun 13:00 (AEST)

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

Score: 0.0/10

Best time: -

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good Compare nearby spots Tours & water activities

Plan your visit

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

Open map

AccessMost Great Barrier Reef snorkeling is a boat trip from Cairns, Port Douglas or an island. Use the site cards below, not the mainland harbour, for the reef forecast.

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

06:11

Sunset

18:12

Water

23.8°C

Max air

22.7°C

Sky

Partly cloudy

66% cloud

No good model window in the next 72 hours

Use the best-available section for the least-bad times.

3-day planner Best available Show data

3-day planner

Thursday

❌ Poor conditions

Main blocker: Waves

Friday

❌ Poor conditions

Main blocker: Waves

Saturday

❌ Poor conditions

Main blocker: Waves

Best available hours

Sun 13:00: Poor (0.35) · still limited by waves, wind
Sun 12:00: Poor (0.34) · still limited by waves, wind
Sun 18:00: Poor (0.33) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

Waves (70 hours)
Wind (70 hours)
Tide/current (70 hours)

Jellyfish drift risk

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

Low · 26/100

Low drift risk now.

water is warm enough for occasional jellyfish; 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: Fri 05:00

Fri 05:00, Fri 17:00, Sat 18:00, Sun 06:00, Sun 18:00

Bookable snorkel tours near Great Barrier Reef

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

We may earn a commission at no extra cost to you.

Outer Reef Mackay Cay Sail & Snorkel Adventure from Port Douglas

4.9/5 464 reviews 9h

From USD 268.07 Check availability

Free cancellation available

Half Day Low Isles Snorkelling Tour from Port Douglas

4.8/5 412 reviews 4h

From USD 178.23 Check availability

Free cancellation available

Silversonic 3 Outer Barrier Reef Sites in 1 Day from Port Douglas

4.8/5 549 reviews 10h

From USD 201.99 Check availability

Free cancellation available

Afternoon Low Isles Snorkelling & Sunset Sail from Port Douglas

4.8/5 364 reviews 5h 30m

From USD 264.45 Check availability

Free cancellation available

Quicksilver Great Barrier Reef Snorkel Cruise from Port Douglas

4.6/5 847 reviews 8h

From USD 244.88 Check availability

Free cancellation available

Calypso Outer Great Barrier Reef Cruise from Port Douglas

4.8/5 1454 reviews 8h

From USD 231.12 Check availability

Free cancellation available

Nearby snorkel spot map

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

Cairns Unknown No recent score Port Douglas Unknown No recent score Heron Island Unknown No recent score Lady Elliot Island Unknown No recent score Whitsundays Unknown No recent score

Forecast spot map

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

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

Nearby alternatives in Australia

Low Isles

18 km away

❌ Poor

Agincourt Reef

33 km away

❌ Poor

Port Douglas

33 km away

❌ Poor

Hastings Reef

43 km away

❌ Poor

Advanced forecast data

Viewing historical data

Wed 22:00 – Sat 22:00 (AEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.26 around Fri 18:00; 0 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 1.14m to 1.66m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 9.13 to 13.58m/s).

Tides range from 0.4m to 1.28m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Thu 19:00 Poor ❌ Limited

Thu 20:00 Poor ❌ Limited

Thu 21:00 Poor ❌ Limited

Thu 22:00 Poor ❌ Limited

Thu 23:00 Poor ❌ Limited

Fri 00:00 Poor ❌ Limited

Fri 01:00 Poor ❌ Limited

Fri 02:00 Poor ❌ Limited

Fri 03:00 Poor ❌ Limited

Fri 04:00 Poor ❌ Limited

Fri 05:00 Poor ❌ Limited

Fri 06:00 Poor ❌ Limited

Fri 07:00 Poor ❌ Limited

Fri 08:00 Poor ❌ Limited

Fri 09:00 Poor ❌ Limited

Fri 10:00 Poor ❌ Limited

Fri 11:00 Poor ❌ Limited

Fri 12:00 Poor ❌ Limited

Fri 13:00 Poor ❌ Limited

Fri 14:00 Poor ❌ Limited

Fri 15:00 Poor ❌ Limited

Fri 16:00 Poor ❌ Limited

Fri 17:00 Poor ❌ Limited

Fri 18:00 Poor ❌ Limited

Fri 19:00 Poor ❌ Limited

Fri 20:00 Poor ❌ Limited

Fri 21:00 Poor ❌ Limited

Fri 22:00 Poor ❌ Limited

Fri 23:00 Poor ❌ Limited

Sat 00:00 Poor ❌ Limited

Sat 01:00 Poor ❌ Limited

Sat 02:00 Poor ❌ Limited

Sat 03:00 Poor ❌ Limited

Sat 04:00 Poor ❌ Limited

Sat 05:00 Poor ❌ Limited

Sat 06:00 Poor ❌ Limited

Sat 07:00 Poor ❌ Limited

Sat 08:00 Poor ❌ Limited

Sat 09:00 Poor ❌ Limited

Sat 10:00 Poor ❌ Limited

Sat 11:00 Poor ❌ Limited

Sat 12:00 Poor ❌ Limited

Sat 13:00 Poor ❌ Limited

Sat 14:00 Poor ❌ Limited

Sat 15:00 Poor ❌ Limited

Sat 16:00 Poor ❌ Limited

Sat 17:00 Poor ❌ Limited

Sat 18:00 Poor ❌ Limited

Sat 19:00 Poor ❌ Limited

Sat 20:00 Poor ❌ Limited

Sat 21:00 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
Thu 19:00	1.14 · high	10.04 · high	23.90 · good	Poor
Thu 20:00	1.14 · high	9.99 · high	23.90 · good	Poor
Thu 21:00	1.14 · high	11.08 · high	23.80 · good	Poor
Thu 22:00	1.14 · high	9.13 · high	23.80 · good	Poor
Thu 23:00	1.18 · high	10.48 · high	23.80 · good	Poor
Fri 00:00	1.20 · high	11.29 · high	23.80 · good	Poor
Fri 01:00	1.24 · high	11.17 · high	23.80 · good	Poor
Fri 02:00	1.26 · high	10.57 · high	23.80 · good	Poor
Fri 03:00	1.30 · high	10.78 · high	23.70 · good	Poor
Fri 04:00	1.32 · high	9.85 · high	23.70 · good	Poor
Fri 05:00	1.40 · high	13.58 · high	23.70 · good	Poor
Fri 06:00	1.46 · high	12.80 · high	23.70 · good	Poor
Fri 07:00	1.54 · high	12.98 · high	23.70 · good	Poor
Fri 08:00	1.58 · high	12.91 · high	23.70 · good	Poor
Fri 09:00	1.60 · high	12.37 · high	23.70 · good	Poor
Fri 10:00	1.64 · high	12.20 · high	23.70 · good	Poor
Fri 11:00	1.64 · high	13.53 · high	23.70 · good	Poor
Fri 12:00	1.66 · high	12.87 · high	23.70 · good	Poor
Fri 13:00	1.66 · high	12.00 · high	23.70 · good	Poor
Fri 14:00	1.66 · high	12.27 · high	23.80 · good	Poor
Fri 15:00	1.64 · high	12.26 · high	23.80 · good	Poor
Fri 16:00	1.64 · high	12.96 · high	23.80 · good	Poor
Fri 17:00	1.64 · high	12.95 · high	23.80 · good	Poor
Fri 18:00	1.66 · high	13.06 · high	23.80 · good	Poor
Fri 19:00	1.66 · high	12.37 · high	23.70 · good	Poor
Fri 20:00	1.64 · high	12.49 · high	23.70 · good	Poor
Fri 21:00	1.64 · high	12.31 · high	23.70 · good	Poor
Fri 22:00	1.62 · high	12.98 · high	23.70 · good	Poor
Fri 23:00	1.64 · high	12.47 · high	23.70 · good	Poor
Sat 00:00	1.64 · high	12.60 · high	23.60 · good	Poor
Sat 01:00	1.66 · high	12.18 · high	23.60 · good	Poor
Sat 02:00	1.66 · high	12.51 · high	23.60 · good	Poor
Sat 03:00	1.64 · high	12.38 · high	23.50 · good	Poor
Sat 04:00	1.64 · high	12.14 · high	23.50 · good	Poor
Sat 05:00	1.64 · high	12.08 · high	23.50 · good	Poor
Sat 06:00	1.64 · high	11.83 · high	23.50 · good	Poor
Sat 07:00	1.64 · high	11.41 · high	23.50 · good	Poor
Sat 08:00	1.62 · high	12.34 · high	23.50 · good	Poor
Sat 09:00	1.60 · high	12.92 · high	23.50 · good	Poor
Sat 10:00	1.58 · high	11.86 · high	23.50 · good	Poor
Sat 11:00	1.54 · high	11.00 · high	23.50 · good	Poor
Sat 12:00	1.48 · high	10.46 · high	23.50 · good	Poor
Sat 13:00	1.44 · high	10.47 · high	23.50 · good	Poor
Sat 14:00	1.42 · high	10.40 · high	23.50 · good	Poor
Sat 15:00	1.42 · high	10.73 · high	23.60 · good	Poor
Sat 16:00	1.40 · high	11.08 · high	23.60 · good	Poor
Sat 17:00	1.38 · high	11.50 · high	23.60 · good	Poor
Sat 18:00	1.36 · high	11.18 · high	23.60 · good	Poor
Sat 19:00	1.34 · high	11.67 · high	23.60 · good	Poor
Sat 20:00	1.32 · high	11.32 · high	23.60 · good	Poor
Sat 21:00	1.32 · high	10.37 · high	23.50 · good	Poor