SnorkelForecast.com

Heron Island Snorkel Report Today

Australia · Updated Tue 04:13 (AEST) · Source: Snapshot

The skinny

Go in the best window Report Tue 19:45

Heron Island has a usable snorkeling window around Thu 17:00. The main thing to watch is waves.

Score: 3.9/10

Best time: Thu 17:00

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:32

Sunset

17:25

Water

20.8°C

Max air

21.3°C

Sky

Clear

2% cloud

Good window is available today

Next safe window: Thu 07:00 (2% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Tuesday

❌ poor conditions

Main blocker: Waves

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

✅ good conditions

Main blocker: Waves

Best available hours

Next safe window starts at Thu 07:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (66 hours)
  • Tide/current (54 hours)
  • Wind (52 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: Tue 16:00

Tue 16:00, Wed 05:00, Wed 17:00, Thu 06:00, Thu 18:00

Nearby alternatives in Australia

Lady Elliot Island

110 km away

❌ Poor

Whitsundays

462 km away

❌ Poor

Byron Bay

603 km away

❌ Poor

Lord Howe Island

1145 km away

❌ Poor

Advanced forecast data

Viewing historical data

Wed 09:00 – Sat 09:00 (AEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.27 around Thu 17:00; 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 0.82m to 1.34m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 9.7 to 13.86m/s).

Tides range from -0.88m to 2.23m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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fair ⚠️ Fair
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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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Wed 09:00 0.82 · high 9.70 · high 21.00 · good poor
Wed 10:00 0.86 · high 12.50 · high 21.00 · good poor
Wed 11:00 0.88 · high 11.15 · high 20.90 · good poor
Wed 12:00 0.92 · high 11.31 · high 20.90 · good poor
Wed 13:00 0.94 · high 11.64 · high 20.80 · good poor
Wed 14:00 0.98 · high 11.35 · high 20.80 · good poor
Wed 15:00 1.00 · high 11.72 · high 20.70 · good poor
Wed 16:00 1.06 · high 11.47 · high 20.70 · good poor
Wed 17:00 1.14 · high 12.24 · high 20.70 · good poor
Wed 18:00 1.20 · high 13.40 · high 20.60 · good poor
Wed 19:00 1.24 · high 13.36 · high 20.60 · good poor
Wed 20:00 1.28 · high 12.73 · high 20.60 · good poor
Wed 21:00 1.32 · high 13.14 · high 20.50 · out of range poor
Wed 22:00 1.32 · high 13.86 · high 20.50 · out of range poor
Wed 23:00 1.34 · high 12.98 · high 20.50 · out of range poor
Thu 00:00 1.34 · high 13.14 · high 20.50 · out of range poor
Thu 01:00 1.32 · high 12.70 · high 20.50 · out of range poor
Thu 02:00 1.30 · high 12.21 · high 20.50 · out of range poor
Thu 03:00 1.28 · high 11.83 · high 20.60 · good poor
Thu 04:00 1.22 · high 11.35 · high 20.60 · good poor
Thu 05:00 1.18 · high 10.94 · high 20.60 · good poor
Thu 06:00 1.12 · high 10.87 · high 20.60 · good poor
Thu 07:00 1.12 · high 10.00 · high 20.60 · good poor
Thu 08:00 1.14 · high 10.85 · high 20.60 · good poor
Thu 09:00 1.14 · high 10.87 · high 20.50 · out of range poor
Thu 10:00 1.16 · high 11.22 · high 20.50 · out of range poor
Thu 11:00 1.16 · high 12.58 · high 20.50 · out of range poor
Thu 12:00 1.18 · high 12.95 · high 20.40 · out of range poor
Thu 13:00 1.22 · high 12.83 · high 20.40 · out of range poor
Thu 14:00 1.26 · high 12.65 · high 20.40 · out of range poor
Thu 15:00 1.30 · high 12.65 · high 20.30 · out of range poor
Thu 16:00 1.30 · high 12.40 · high 20.30 · out of range poor
Thu 17:00 1.28 · high 11.84 · high 20.30 · out of range poor
Thu 18:00 1.28 · high 11.13 · high 20.30 · out of range poor
Thu 19:00 1.26 · high 11.66 · high 20.30 · out of range poor
Thu 20:00 1.22 · high 11.83 · high 20.30 · out of range poor
Thu 21:00 1.20 · high 11.87 · high 20.20 · out of range poor
Thu 22:00 1.18 · high 12.00 · high 20.20 · out of range poor
Thu 23:00 1.18 · high 12.18 · high 20.30 · out of range poor
Fri 00:00 1.16 · high 11.72 · high 20.30 · out of range poor
Fri 01:00 1.14 · high 11.88 · high 20.30 · out of range poor
Fri 02:00 1.14 · high 11.65 · high 20.40 · out of range poor
Fri 03:00 1.12 · high 11.87 · high 20.40 · out of range poor
Fri 04:00 1.12 · high 12.17 · high 20.50 · out of range poor
Fri 05:00 1.14 · high 12.01 · high 20.50 · out of range poor
Fri 06:00 1.14 · high 12.38 · high 20.60 · good poor
Fri 07:00 1.16 · high 12.14 · high 20.60 · good poor
Fri 08:00 1.16 · high 12.64 · high 20.60 · good poor
Fri 09:00 1.18 · high 12.52 · high 20.60 · good poor
Fri 10:00 1.18 · high 12.39 · high 20.50 · out of range poor
Fri 11:00 1.20 · high 12.25 · high 20.50 · out of range poor
Fri 12:00 1.20 · high 12.30 · high 20.50 · out of range poor
Fri 13:00 1.20 · high 12.55 · high 20.40 · out of range poor
Fri 14:00 1.20 · high 12.70 · high 20.40 · out of range poor
Fri 15:00 1.20 · high 12.44 · high 20.40 · out of range poor
Fri 16:00 1.18 · high 11.55 · high 20.30 · out of range poor
Fri 17:00 1.18 · high 11.27 · high 20.30 · out of range poor
Fri 18:00 1.16 · high 11.34 · high 20.30 · out of range poor
Fri 19:00 1.16 · high 11.58 · high 20.30 · out of range poor
Fri 20:00 1.14 · high 11.56 · high 20.20 · out of range poor
Fri 21:00 1.14 · high 11.75 · high 20.20 · out of range poor
Fri 22:00 1.12 · high 11.63 · high 20.20 · out of range poor
Fri 23:00 1.12 · high 11.13 · high 20.20 · out of range poor
Sat 00:00 1.10 · high 11.95 · high 20.20 · out of range poor
Sat 01:00 1.04 · high 12.05 · high 20.30 · out of range poor
Sat 02:00 1.00 · high 11.00 · high 20.30 · out of range poor
Sat 03:00 0.94 · high 11.06 · high 20.40 · out of range poor
Sat 04:00 0.90 · high 11.32 · high 20.40 · out of range poor
Sat 05:00 0.86 · high 10.24 · high 20.50 · out of range poor
Sat 06:00 0.80 · high 6.33 · high 20.70 · good fair
Sat 07:00 0.76 · high 5.76 · high 20.70 · good fair
Sat 08:00 0.70 · high 5.10 · good 20.70 · good poor