SnorkelForecast.com

Heron Island Snorkel Report Today

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

The skinny

Go in the best window Report Wed 09:01

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

Best morning signal: Wed 11:00 (Poor).

Best afternoon signal: Wed 17:00 (Fair). Peak afternoon wind is about 7.7 m/s.

Email me when it is good

Sunrise

06:31

Sunset

17:25

Water

20.6°C

Max air

21.0°C

Sky

Clear

5% 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

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

✅ good conditions

Main blocker: Waves

Friday

⚠️ fair 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 (52 hours)
  • Tide/current (40 hours)
  • Wind (38 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: Wed 17:00

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

⚠️ Fair

Lord Howe Island

1145 km away

❌ Poor

Advanced forecast data

Viewing historical data

Sat 23:00 – Tue 23:00 (AEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.7 around Sun 13:00; 8 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.

24/24 sampled hours stay at or below 0.36m (range 0.22m to 0.26m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.27 to 3.51m/s).

Tides range from -0.75m to 2.05m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
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
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good 🌟 Good
poor ❌ Limited
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good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
poor ❌ Limited
poor ❌ Limited
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poor ❌ Limited
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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
Sat 23:00 0.26 · good 2.62 · good 20.80 · good poor
Sun 00:00 0.26 · good 3.00 · good 20.80 · good good
Sun 01:00 0.26 · good 3.02 · good 20.90 · good good
Sun 02:00 0.26 · good 3.51 · good 20.90 · good good
Sun 03:00 0.26 · good 3.13 · good 21.00 · good good
Sun 04:00 0.26 · good 2.62 · good 21.00 · good good
Sun 05:00 0.26 · good 2.78 · good 21.10 · good good
Sun 06:00 0.26 · good 2.49 · good 21.10 · good good
Sun 07:00 0.26 · good 2.51 · good 21.10 · good good
Sun 08:00 0.26 · good 2.50 · good 21.10 · good poor
Sun 09:00 0.26 · good 2.52 · good 21.10 · good poor
Sun 10:00 0.26 · good 3.18 · good 21.10 · good poor
Sun 11:00 0.26 · good 3.51 · good 21.10 · good poor
Sun 12:00 0.26 · good 3.30 · good 21.10 · good poor
Sun 13:00 0.26 · good 2.96 · good 21.10 · good poor
Sun 14:00 0.24 · good 2.77 · good 21.00 · good poor
Sun 15:00 0.24 · good 2.78 · good 21.00 · good poor
Sun 16:00 0.24 · good 1.81 · good 21.00 · good poor
Sun 17:00 0.22 · good 0.99 · good 21.00 · good poor
Sun 18:00 0.22 · good 0.78 · good 21.00 · good poor
Sun 19:00 0.22 · good 0.71 · good 21.00 · good poor
Sun 20:00 0.22 · good 1.03 · good 21.00 · good poor
Sun 21:00 0.22 · good 0.27 · good 21.00 · good poor
Sun 22:00 0.22 · good 2.34 · good 21.00 · good poor
Sun 23:00 0.22 · good 4.09 · good 21.00 · good poor
Mon 00:00 0.22 · good 4.01 · good 21.00 · good good
Mon 01:00 0.24 · good 3.58 · good 21.10 · good good
Mon 02:00 0.24 · good 1.51 · good 21.10 · good good
Mon 03:00 0.26 · good 1.72 · good 21.10 · good good
Mon 04:00 0.26 · good 2.65 · good 21.20 · good good
Mon 05:00 0.26 · good 2.18 · good 21.20 · good good
Mon 06:00 0.26 · good 2.68 · good 21.20 · good good
Mon 07:00 0.26 · good 2.45 · good 21.20 · good good
Mon 08:00 0.26 · good 2.26 · good 21.20 · good poor
Mon 09:00 0.26 · good 2.69 · good 21.20 · good poor
Mon 10:00 0.24 · good 2.51 · good 21.20 · good poor
Mon 11:00 0.24 · good 2.12 · good 21.10 · good poor
Mon 12:00 0.22 · good 2.20 · good 21.10 · good poor
Mon 13:00 0.22 · good 2.50 · good 21.10 · good poor
Mon 14:00 0.22 · good 2.68 · good 21.10 · good poor
Mon 15:00 0.22 · good 1.77 · good 21.10 · good poor
Mon 16:00 0.22 · good 1.01 · good 21.10 · good poor
Mon 17:00 0.20 · good 0.60 · good 21.10 · good poor
Mon 18:00 0.20 · good 1.05 · good 21.10 · good poor
Mon 19:00 0.20 · good 1.64 · good 21.10 · good poor
Mon 20:00 0.20 · good 1.86 · good 21.10 · good poor
Mon 21:00 0.20 · good 1.99 · good 21.10 · good poor
Mon 22:00 0.20 · good 2.84 · good 21.10 · good poor
Mon 23:00 0.20 · good 3.79 · good 21.10 · good poor
Tue 00:00 0.20 · good 4.19 · good 21.10 · good good
Tue 01:00 0.20 · good 3.36 · good 21.20 · good good
Tue 02:00 0.20 · good 3.06 · good 21.20 · good good
Tue 03:00 0.20 · good 4.55 · good 21.30 · good good
Tue 04:00 0.20 · good 3.79 · good 21.40 · good good
Tue 05:00 0.20 · good 3.90 · good 21.40 · good good
Tue 06:00 0.20 · good 4.16 · good 21.40 · good good
Tue 07:00 0.20 · good 4.11 · good 21.40 · good good
Tue 08:00 0.22 · good 4.01 · good 21.40 · good poor
Tue 09:00 0.22 · good 4.29 · good 21.30 · good poor
Tue 10:00 0.22 · good 4.68 · good 21.30 · good poor
Tue 11:00 0.22 · good 4.48 · good 21.30 · good poor
Tue 12:00 0.22 · good 4.25 · good 21.20 · good poor
Tue 13:00 0.22 · good 3.93 · good 21.20 · good poor
Tue 14:00 0.24 · good 3.62 · good 21.20 · good poor
Tue 15:00 0.24 · good 3.82 · good 21.20 · good poor
Tue 16:00 0.28 · good 4.60 · good 21.20 · good poor
Tue 17:00 0.32 · good 4.86 · good 21.10 · good poor
Tue 18:00 0.36 · good 6.73 · high 21.10 · good poor
Tue 19:00 0.44 · high 8.85 · high 21.10 · good poor
Tue 20:00 0.50 · high 9.75 · high 21.10 · good poor
Tue 21:00 0.58 · high 9.85 · high 21.00 · good poor
Tue 22:00 0.62 · high 10.04 · high 21.00 · good poor