SnorkelForecast.com

Heron Island Snorkel Report Today

Australia · Updated Sat 05:02 (AEST) · Source: Snapshot · Showing fallback/stale data

The skinny

Marginal Report Mon 00:43

Heron Island looks marginal today. The least-bad daylight window is around Tue 10:00, but waves is limiting the forecast.

Score: 2.1/10

Best time: Tue 10:00

Main risk: Waves

Best morning signal: Mon 10:00 (Poor).

Best afternoon signal: Mon 12:00 (Poor). Peak afternoon wind is about 15.5 m/s.

Email me when it is good

Sunrise

06:32

Sunset

17:24

Water

20.9°C

Max air

21.1°C

Sky

Partly cloudy

31% 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

Monday

❌ poor conditions

Main blocker: Waves

Tuesday

❌ poor conditions

Main blocker: Waves

Best available hours

  • Tue 00:00 — Poor (0.23) · still limited by waves, wind
  • Mon 02:00 — Poor (0.21) · still limited by waves, wind
  • Mon 06:00 — Poor (0.20) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (38 hours)
  • Wind (38 hours)
  • Tide/current (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: Mon 15:00

Mon 03:00, Mon 15:00

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

Thu 14:00 – Sun 14:00 (AEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.23 around Fri 15:00; 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 1.12m to 1.3m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 11.13 to 12.65m/s).

Tides range from -0.72m to 1.99m; 2 of 24 hours are in or near peak slack windows.

72-hour historical 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
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
Sat 09:00 0.66 · high 5.06 · good 20.70 · good poor
Sat 10:00 0.68 · high 5.60 · high 20.70 · good poor
Sat 11:00 0.70 · high 5.37 · good 20.70 · good poor
Sat 12:00 0.72 · high 6.63 · high 20.70 · good poor
Sat 13:00 0.74 · high 9.78 · high 20.70 · good poor
Sat 14:00 0.78 · high 9.61 · high 20.70 · good poor
Sat 15:00 0.80 · high 8.73 · high 20.70 · good poor
Sat 16:00 0.82 · high 9.03 · high 20.70 · good poor
Sat 17:00 0.84 · high 9.24 · high 20.60 · good poor
Sat 18:00 0.86 · high 9.21 · high 20.60 · good poor
Sat 19:00 0.86 · high 8.89 · high 20.60 · good poor
Sat 20:00 0.88 · high 8.72 · high 20.60 · good poor
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