SnorkelForecast.com

Heron Island Snorkel Report Today

Australia · Updated Sat 05:02 (AEST) · Source: Snapshot

The skinny

Marginal Report Sun 06:51

Heron Island looks marginal today. The least-bad daylight window is around Sun 14:00, but waves is limiting the forecast.

Score: 3.1/10

Best time: Sun 14:00

Main risk: Waves

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

Best afternoon signal: Sun 14:00 (Poor). Peak afternoon wind is about 9.6 m/s.

Email me when it is good

Sunrise

06:33

Sunset

17:24

Water

20.6°C

Max air

21.4°C

Sky

Clear

1% cloud

No safe 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

Sunday

❌ poor conditions

Main blocker: Waves

Monday

❌ poor conditions

Main blocker: Waves

Tuesday

❌ poor conditions

Main blocker: Waves

Best available hours

  • Sun 04:00 — Poor (0.31) · still limited by waves, wind
  • Sun 05:00 — Poor (0.30) · still limited by waves, wind
  • Sun 01:00 — Poor (0.29) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (56 hours)
  • Wind (56 hours)
  • Tide/current (56 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: Sun 14:00

Sun 02:00, Sun 14:00, Mon 03:00, Mon 15:00

Nearby alternatives in Australia

Lady Elliot Island

110 km away

❌ Poor

Whitsundays

462 km away

✅ Good

Byron Bay

603 km away

❌ Poor

Lord Howe Island

1145 km away

❌ Poor

Advanced forecast data

Viewing live forecast

Sat 20:00 – Tue 20:00 (AEST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.31 around Sun 14:00; 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 0.86m to 1.54m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 7.92 to 14.76m/s).

Tides range from -0.29m to 1.57m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
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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 21:00 0.88 · high 8.61 · high 20.60 · good poor
Sat 22:00 0.88 · high 9.00 · high 20.60 · good poor
Sat 23:00 0.86 · high 9.19 · high 20.60 · good poor
Sun 00:00 0.86 · high 8.94 · high 20.60 · good poor
Sun 01:00 0.88 · high 8.87 · high 20.70 · good poor
Sun 02:00 0.90 · high 9.38 · high 20.70 · good poor
Sun 03:00 0.92 · high 8.95 · high 20.80 · good poor
Sun 04:00 0.94 · high 7.92 · high 20.90 · good poor
Sun 05:00 0.96 · high 8.67 · high 20.90 · good poor
Sun 06:00 0.98 · high 9.23 · high 21.00 · good poor
Sun 07:00 1.00 · high 9.62 · high 21.00 · good poor
Sun 08:00 1.04 · high 9.85 · high 21.00 · good poor
Sun 09:00 1.06 · high 11.13 · high 21.00 · good poor
Sun 10:00 1.18 · high 14.11 · high 21.00 · good poor
Sun 11:00 1.30 · high 14.76 · high 20.90 · good poor
Sun 12:00 1.42 · high 13.88 · high 20.90 · good poor
Sun 13:00 1.44 · high 13.37 · high 20.90 · good poor
Sun 14:00 1.46 · high 13.59 · high 20.90 · good poor
Sun 15:00 1.48 · high 14.23 · high 20.90 · good poor
Sun 16:00 1.50 · high 12.64 · high 20.90 · good poor
Sun 17:00 1.52 · high 13.02 · high 20.90 · good poor
Sun 18:00 1.54 · high 13.21 · high 20.90 · good poor
Sun 19:00 1.54 · high 13.15 · high 20.90 · good poor
Sun 20:00 1.52 · high 13.07 · high 20.90 · good poor
Sun 21:00 1.52 · high 13.32 · high 20.90 · good poor
Sun 22:00 1.56 · high 13.95 · high 20.90 · good poor
Sun 23:00 1.58 · high 12.68 · high 20.90 · good poor
Mon 00:00 1.62 · high 13.92 · high 20.90 · good poor
Mon 01:00 1.60 · high 13.57 · high 20.90 · good poor
Mon 02:00 1.60 · high 13.02 · high 21.00 · good poor
Mon 03:00 1.58 · high 13.10 · high 21.00 · good poor
Mon 04:00 1.60 · high 14.63 · high 21.10 · good poor
Mon 05:00 1.62 · high 15.13 · high 21.10 · good poor
Mon 06:00 1.64 · high 15.23 · high 21.10 · good poor
Mon 07:00 1.68 · high 15.48 · high 21.10 · good poor
Mon 08:00 1.72 · high 15.95 · high 21.10 · good poor
Mon 09:00 1.76 · high 16.10 · high 21.10 · good poor
Mon 10:00 1.78 · high 16.20 · high 21.00 · good poor
Mon 11:00 1.80 · high 15.34 · high 21.00 · good poor
Mon 12:00 1.82 · high 14.94 · high 21.00 · good poor
Mon 13:00 1.82 · high 14.58 · high 20.90 · good poor
Mon 14:00 1.82 · high 14.65 · high 20.90 · good poor
Mon 15:00 1.82 · high 14.76 · high 20.80 · good poor
Mon 16:00 1.80 · high 14.46 · high 20.80 · good poor
Mon 17:00 1.80 · high 14.15 · high 20.80 · good poor
Mon 18:00 1.78 · high 14.53 · high 20.70 · good poor
Mon 19:00 1.78 · high 14.22 · high 20.70 · good poor
Mon 20:00 1.80 · high 14.09 · high 20.70 · good poor
Mon 21:00 1.80 · high 14.06 · high 20.70 · good poor
Mon 22:00 1.78 · high 13.98 · high 20.70 · good poor
Mon 23:00 1.76 · high 14.17 · high 20.70 · good poor
Tue 00:00 1.74 · high 13.50 · high 20.70 · good poor
Tue 01:00 1.68 · high 13.46 · high 20.70 · good poor
Tue 02:00 1.64 · high 13.07 · high 20.70 · good poor
Tue 03:00 1.58 · high 12.51 · high 20.70 · good poor
Tue 04:00 1.58 · high 12.28 · high 20.80 · good poor