Can you snorkel in Heron Island today?

Yes. The next good snorkeling window in Heron Island starts Thu 07:00. Around 2% of the next 72 hours are suitable.

What is the best time of day to snorkel in Heron Island?

Snorkel during daylight, ideally in the morning before the wind picks up, and around high slack tide when water is clearest and currents are weakest. SnorkelForecast scores every daylight hour in Heron Island so you can pick the calmest window.

What is the best tide for snorkeling?

High slack tide — within about an hour of the high-tide peak when currents are weakest — is the safest, clearest window. Strong low tides, strong tidal flow near channels or headlands, and large tidal-range days reduce score.

Heron Island Snorkel Report Today

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

The skinny

Go in the best window Report Wed 12:19

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

Score: 4.2/10

Best time: Thu 17:00

Main risk: Waves

No useful morning window is showing yet.

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

20.8°C

Max air

21.0°C

Sky

Clear

7% 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 (49 hours)
Tide/current (37 hours)
Wind (35 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

⚠️ Fair

Whitsundays

462 km away

❌ Poor

Byron Bay

603 km away

⚠️ Fair

Lord Howe Island

1145 km away

⚠️ Fair

Advanced forecast data

Viewing historical data

Fri 02:00 – Mon 02:00 (AEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.54 around Sat 11:00; 2 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 0.46m to 0.82m).

Wind is at or below 5.4m/s in 6/24 sampled hours (range 4.69 to 8.95m/s).

Tides range from -0.63m to 1.66m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Fri 02:00 poor ❌ Limited

Fri 03:00 poor ❌ Limited

Fri 04:00 poor ❌ Limited

Fri 05:00 poor ❌ Limited

Fri 06:00 poor ❌ Limited

Fri 07:00 poor ❌ Limited

Fri 08:00 poor ❌ Limited

Fri 09:00 poor ❌ Limited

Fri 10:00 poor ❌ Limited

Fri 11:00 poor ❌ Limited

Fri 12:00 poor ❌ Limited

Fri 13:00 poor ❌ Limited

Fri 14:00 poor ❌ Limited

Fri 15:00 poor ❌ Limited

Fri 16:00 poor ❌ Limited

Fri 17:00 poor ❌ Limited

Fri 18:00 poor ❌ Limited

Fri 19:00 poor ❌ Limited

Fri 20:00 poor ❌ Limited

Fri 21:00 poor ❌ Limited

Fri 22:00 poor ❌ Limited

Fri 23:00 poor ❌ Limited

Sat 00:00 fair ⚠️ Fair

Sat 01:00 fair ⚠️ Fair

Sat 02:00 fair ⚠️ Fair

Sat 03:00 fair ⚠️ Fair

Sat 04:00 fair ⚠️ Fair

Sat 05:00 good 🌟 Good

Sat 06:00 good 🌟 Good

Sat 07:00 good 🌟 Good

Sat 08:00 poor ❌ Limited

Sat 09:00 poor ❌ Limited

Sat 10:00 poor ❌ Limited

Sat 11:00 poor ❌ Limited

Sat 12:00 poor ❌ Limited

Sat 13:00 poor ❌ Limited

Sat 14:00 poor ❌ Limited

Sat 15:00 poor ❌ Limited

Sat 16:00 poor ❌ Limited

Sat 17:00 poor ❌ Limited

Sat 18:00 poor ❌ Limited

Sat 19:00 poor ❌ Limited

Sat 20:00 poor ❌ Limited

Sat 21:00 poor ❌ Limited

Sat 22:00 poor ❌ Limited

Sat 23:00 poor ❌ Limited

Sun 00:00 good 🌟 Good

Sun 01:00 good 🌟 Good

Sun 02:00 good 🌟 Good

Sun 03:00 good 🌟 Good

Sun 04:00 good 🌟 Good

Sun 05:00 good 🌟 Good

Sun 06:00 good 🌟 Good

Sun 07:00 good 🌟 Good

Sun 08:00 poor ❌ Limited

Sun 09:00 poor ❌ Limited

Sun 10:00 poor ❌ Limited

Sun 11:00 poor ❌ Limited

Sun 12:00 poor ❌ Limited

Sun 13:00 poor ❌ Limited

Sun 14:00 poor ❌ Limited

Sun 15:00 poor ❌ Limited

Sun 16:00 poor ❌ Limited

Sun 17:00 poor ❌ Limited

Sun 18:00 poor ❌ Limited

Sun 19:00 poor ❌ Limited

Sun 20:00 poor ❌ Limited

Sun 21:00 poor ❌ Limited

Sun 22:00 poor ❌ Limited

Sun 23:00 poor ❌ Limited

Mon 00:00 good 🌟 Good

Mon 01:00 good 🌟 Good

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
Fri 02:00	0.82 · high	6.37 · high	20.50 · out of range	poor
Fri 03:00	0.80 · high	6.50 · high	20.60 · good	poor
Fri 04:00	0.78 · high	6.33 · high	20.60 · good	poor
Fri 05:00	0.74 · high	7.50 · high	20.60 · good	poor
Fri 06:00	0.72 · high	8.95 · high	20.60 · good	poor
Fri 07:00	0.70 · high	8.79 · high	20.60 · good	poor
Fri 08:00	0.68 · high	8.32 · high	20.60 · good	poor
Fri 09:00	0.66 · high	7.95 · high	20.60 · good	poor
Fri 10:00	0.66 · high	7.88 · high	20.60 · good	poor
Fri 11:00	0.64 · high	7.72 · high	20.60 · good	poor
Fri 12:00	0.64 · high	7.74 · high	20.60 · good	poor
Fri 13:00	0.64 · high	7.47 · high	20.60 · good	poor
Fri 14:00	0.64 · high	7.06 · high	20.50 · out of range	poor
Fri 15:00	0.64 · high	6.73 · high	20.50 · out of range	poor
Fri 16:00	0.62 · high	6.16 · high	20.50 · out of range	poor
Fri 17:00	0.60 · high	5.79 · high	20.50 · out of range	poor
Fri 18:00	0.58 · high	5.67 · high	20.50 · out of range	poor
Fri 19:00	0.56 · high	5.45 · high	20.50 · out of range	poor
Fri 20:00	0.54 · high	5.07 · good	20.50 · out of range	poor
Fri 21:00	0.52 · high	4.74 · good	20.50 · out of range	poor
Fri 22:00	0.50 · high	4.69 · good	20.50 · out of range	poor
Fri 23:00	0.50 · high	5.01 · good	20.50 · out of range	poor
Sat 00:00	0.48 · high	5.17 · good	20.50 · out of range	fair
Sat 01:00	0.46 · high	5.21 · good	20.60 · good	fair
Sat 02:00	0.46 · high	5.29 · good	20.60 · good	fair
Sat 03:00	0.44 · high	4.99 · good	20.70 · good	fair
Sat 04:00	0.42 · high	4.55 · good	20.70 · good	fair
Sat 05:00	0.40 · high	4.08 · good	20.80 · good	good
Sat 06:00	0.38 · high	4.15 · good	20.80 · good	good
Sat 07:00	0.36 · good	4.14 · good	20.80 · good	good
Sat 08:00	0.36 · good	3.88 · good	20.80 · good	poor
Sat 09:00	0.34 · good	3.71 · good	20.80 · good	poor
Sat 10:00	0.32 · good	3.60 · good	20.80 · good	poor
Sat 11:00	0.32 · good	3.27 · good	20.80 · good	poor
Sat 12:00	0.30 · good	3.12 · good	20.80 · good	poor
Sat 13:00	0.30 · good	2.70 · good	20.80 · good	poor
Sat 14:00	0.28 · good	2.41 · good	20.80 · good	poor
Sat 15:00	0.28 · good	2.83 · good	20.80 · good	poor
Sat 16:00	0.28 · good	2.91 · good	20.80 · good	poor
Sat 17:00	0.26 · good	3.00 · good	20.80 · good	poor
Sat 18:00	0.26 · good	3.28 · good	20.80 · good	poor
Sat 19:00	0.26 · good	3.58 · good	20.80 · good	poor
Sat 20:00	0.26 · good	3.13 · good	20.80 · good	poor
Sat 21:00	0.26 · good	2.48 · good	20.80 · good	poor
Sat 22:00	0.26 · good	2.50 · good	20.80 · good	poor
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