SnorkelForecast.com

Heron Island Snorkel Report Today

Australia · Updated Tue 20:30 (AEST) · Source: Snapshot

The skinny

Go in the best window Report Wed 09:23

Heron Island has a usable snorkeling window around Wed 10:00. The main thing to watch is tide/current.

Score: 7.0/10

Best time: Wed 10:00

Main risk: Tide/Current

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

Best afternoon signal: Wed 12:00 (Good). Peak afternoon wind is about 4.1 m/s.

Email me when it is good

Sunrise

06:02

Sunset

17:42

Water

21.2°C

Max air

21.0°C

Sky

Clear

3% cloud

Good window is available today

Next good model window: Wed 00:00–07:00 (35% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Wednesday

✅ Good conditions

Main blocker: Waves

Thursday

✅ Excellent conditions

Main blocker: Tide/current

Friday

✅ Excellent conditions

Main blocker: Tide/current

Best available hours

The next good model window starts at Wed 00:00 and lasts until 07:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (62 hours)
  • Darkness (44 hours)
  • Waves (21 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: Thu 14:00

Wed 01:00, Wed 13:00, Thu 02:00, Thu 14:00, Fri 04:00, Fri 16:00

Nearby alternatives in Australia

Lady Elliot Island

110 km away

✅ Good

Whitsundays

462 km away

✅ Good

Byron Bay

603 km away

⚠️ Fair

Fitzroy Island

951 km away

❌ Poor

Advanced forecast data

Viewing current forecast

Tue 23:00 – Fri 23:00 (AEST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.7 around Wed 12:00; 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.

3/24 sampled hours stay at or below 0.36m (range 0.34m to 0.48m).

Wind is at or below 5.4m/s in 22/24 sampled hours (range 1.51 to 6.46m/s).

Tides range from -0.53m to 1.32m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Excellent ✅ Excellent
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
Wed 00:00 0.42 · high 3.57 · good 21.20 · good Good
Wed 01:00 0.42 · high 3.26 · good 21.30 · good Good
Wed 02:00 0.40 · high 2.75 · good 21.40 · good Good
Wed 03:00 0.40 · high 2.58 · good 21.60 · good Good
Wed 04:00 0.40 · high 2.72 · good 21.70 · good Good
Wed 05:00 0.40 · high 2.60 · good 21.80 · good Good
Wed 06:00 0.40 · high 3.48 · good 21.80 · good Good
Wed 07:00 0.42 · high 4.09 · good 21.80 · good Good
Wed 08:00 0.46 · high 4.97 · good 21.80 · good Poor
Wed 09:00 0.48 · high 6.46 · high 21.70 · good Poor
Wed 10:00 0.48 · high 5.44 · high 21.60 · good Poor
Wed 11:00 0.46 · high 4.64 · good 21.60 · good Poor
Wed 12:00 0.46 · high 4.27 · good 21.50 · good Poor
Wed 13:00 0.44 · high 3.62 · good 21.50 · good Poor
Wed 14:00 0.44 · high 2.94 · good 21.50 · good Poor
Wed 15:00 0.42 · high 2.69 · good 21.40 · good Poor
Wed 16:00 0.42 · high 2.55 · good 21.40 · good Poor
Wed 17:00 0.40 · high 2.42 · good 21.40 · good Poor
Wed 18:00 0.40 · high 2.45 · good 21.40 · good Poor
Wed 19:00 0.38 · high 2.00 · good 21.40 · good Poor
Wed 20:00 0.38 · high 1.81 · good 21.40 · good Poor
Wed 21:00 0.36 · good 1.54 · good 21.50 · good Poor
Wed 22:00 0.36 · good 1.51 · good 21.50 · good Poor
Wed 23:00 0.34 · good 1.61 · good 21.50 · good Poor
Thu 00:00 0.34 · good 1.70 · good 21.60 · good Good
Thu 01:00 0.34 · good 1.61 · good 21.70 · good Excellent
Thu 02:00 0.32 · good 2.12 · good 21.80 · good Excellent
Thu 03:00 0.32 · good 2.06 · good 21.90 · good Excellent
Thu 04:00 0.32 · good 1.81 · good 22.00 · good Good
Thu 05:00 0.30 · good 1.77 · good 22.10 · good Good
Thu 06:00 0.30 · good 1.38 · good 22.10 · good Good
Thu 07:00 0.30 · good 1.12 · good 22.10 · good Good
Thu 08:00 0.30 · good 2.29 · good 22.10 · good Poor
Thu 09:00 0.30 · good 3.51 · good 22.00 · good Poor
Thu 10:00 0.32 · good 4.61 · good 21.90 · good Poor
Thu 11:00 0.34 · good 5.68 · high 21.80 · good Poor
Thu 12:00 0.36 · good 5.66 · high 21.70 · good Poor
Thu 13:00 0.36 · good 4.65 · good 21.70 · good Poor
Thu 14:00 0.34 · good 3.64 · good 21.70 · good Poor
Thu 15:00 0.34 · good 3.78 · good 21.60 · good Poor
Thu 16:00 0.32 · good 4.15 · good 21.60 · good Poor
Thu 17:00 0.32 · good 4.15 · good 21.60 · good Poor
Thu 18:00 0.30 · good 3.37 · good 21.60 · good Poor
Thu 19:00 0.28 · good 2.89 · good 21.60 · good Poor
Thu 20:00 0.28 · good 2.97 · good 21.60 · good Poor
Thu 21:00 0.26 · good 3.28 · good 21.60 · good Poor
Thu 22:00 0.26 · good 3.64 · good 21.70 · good Poor
Thu 23:00 0.26 · good 3.29 · good 21.70 · good Poor
Fri 00:00 0.26 · good 2.76 · good 21.70 · good Excellent
Fri 01:00 0.26 · good 2.21 · good 21.80 · good Good
Fri 02:00 0.24 · good 1.83 · good 21.90 · good Excellent
Fri 03:00 0.24 · good 1.26 · good 22.00 · good Excellent
Fri 04:00 0.24 · good 1.23 · good 22.10 · good Excellent
Fri 05:00 0.22 · good 1.80 · good 22.20 · good Excellent
Fri 06:00 0.22 · good 2.57 · good 22.30 · good Excellent
Fri 07:00 0.24 · good 3.50 · good 22.30 · good Good
Fri 08:00 0.24 · good 4.22 · good 22.20 · good Poor
Fri 09:00 0.26 · good 4.58 · good 22.10 · good Poor
Fri 10:00 0.28 · good 4.34 · good 22.00 · good Poor
Fri 11:00 0.32 · good 4.65 · good 21.90 · good Poor
Fri 12:00 0.34 · good 5.23 · good 21.90 · good Poor
Fri 13:00 0.34 · good 4.85 · good 21.80 · good Poor
Fri 14:00 0.32 · good 4.27 · good 21.80 · good Poor
Fri 15:00 0.32 · good 3.54 · good 21.80 · good Poor
Fri 16:00 0.32 · good 3.07 · good 21.80 · good Poor
Fri 17:00 0.32 · good 3.66 · good 21.70 · good Poor
Fri 18:00 0.32 · good 4.03 · good 21.70 · good Poor
Fri 19:00 0.32 · good 4.14 · good 21.70 · good Poor