MARINE REPORT / 72 HOURS

Perhentian Islands Snorkel Report Today

Malaysia · Updated Thu 12:04 (+08) · Source: Snapshot

The skinny

Go in the best window Data updated Thu 12:04 (+08)

Perhentian Islands has a usable snorkeling window around Thu 16:00. The main thing to watch is sea temperature.

Right now (forecast)

Fair · 5.4/10

Thu 14:00 (+08)

Later today

Good · 6.4/10

Thu 18:00 (+08)

Next three days

Good · 7.1/10

Sun 10:00 (+08)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 6.4/10

Best time: Thu 16:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Thu 18:00 (Good). Peak afternoon wind is about 5.1 m/s.

Email me when it is good

Sunrise

06:54

Sunset

18:52

Water

31.7°C

Max air

29.6°C

Sky

Cloudy

93% cloud

Good model window in the next 72 hours

Next good model window: Thu 16:00–18:00 (42% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Thursday

✅ Good conditions

Main blocker: Sea temperature

Friday

✅ Good conditions

Main blocker: Sea temperature

Saturday

✅ Good conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Thu 16:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (69 hours)
  • Tide/current (61 hours)
  • Darkness (39 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 34/100

Low drift risk now.

warm water supports seasonal jellyfish activity; 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: Sat 06:00

Thu 18:00, Fri 19:00, Sat 06:00, Sat 19:00, Sun 06:00

Nearby alternatives in Malaysia

Redang Island

34 km away

✅ Good

Langkawi

328 km away

✅ Good

Tioman Island

382 km away

✅ Good

Mabul

1771 km away

✅ Good

Advanced forecast data

Viewing historical data

Wed 14:00 – Sat 14:00 (+08)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.87 around Thu 10:00; 12 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 0.06m to 0.1m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.3 to 3.25m/s).

Tides range from 0.06m to 1.43m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Wed 14:00 0.08 · good 1.88 · good 31.70 · out of range Good
Wed 15:00 0.08 · good 1.50 · good 31.70 · out of range Excellent
Wed 16:00 0.08 · good 2.16 · good 31.60 · out of range Excellent
Wed 17:00 0.08 · good 3.25 · good 31.60 · out of range Excellent
Wed 18:00 0.08 · good 3.06 · good 31.50 · out of range Excellent
Wed 19:00 0.10 · good 2.41 · good 31.50 · out of range Excellent
Wed 20:00 0.10 · good 2.93 · good 31.50 · out of range Poor
Wed 21:00 0.10 · good 2.79 · good 31.40 · out of range Poor
Wed 22:00 0.08 · good 2.33 · good 31.40 · out of range Poor
Wed 23:00 0.08 · good 2.21 · good 31.30 · out of range Poor
Thu 00:00 0.08 · good 1.65 · good 31.20 · out of range Poor
Thu 01:00 0.08 · good 2.19 · good 31.20 · out of range Poor
Thu 02:00 0.08 · good 2.37 · good 31.10 · out of range Poor
Thu 03:00 0.08 · good 2.50 · good 31.10 · out of range Poor
Thu 04:00 0.08 · good 2.16 · good 31.00 · out of range Poor
Thu 05:00 0.08 · good 1.71 · good 31.00 · out of range Poor
Thu 06:00 0.08 · good 0.98 · good 30.90 · out of range Poor
Thu 07:00 0.08 · good 0.45 · good 30.90 · out of range Poor
Thu 08:00 0.08 · good 0.30 · good 30.90 · out of range Excellent
Thu 09:00 0.08 · good 0.86 · good 31.00 · out of range Excellent
Thu 10:00 0.06 · good 0.99 · good 31.10 · out of range Excellent
Thu 11:00 0.06 · good 1.12 · good 31.30 · out of range Excellent
Thu 12:00 0.06 · good 1.36 · good 31.40 · out of range Good
Thu 13:00 0.06 · good 1.68 · good 31.50 · out of range Excellent
Thu 14:00 0.06 · good 0.83 · good 31.60 · out of range Excellent
Thu 15:00 0.06 · good 2.02 · good 31.60 · out of range Excellent
Thu 16:00 0.06 · good 3.46 · good 31.60 · out of range Excellent
Thu 17:00 0.06 · good 3.27 · good 31.50 · out of range Excellent
Thu 18:00 0.06 · good 2.42 · good 31.50 · out of range Excellent
Thu 19:00 0.08 · good 2.30 · good 31.30 · out of range Excellent
Thu 20:00 0.08 · good 2.42 · good 31.30 · out of range Poor
Thu 21:00 0.08 · good 2.33 · good 31.20 · out of range Poor
Thu 22:00 0.08 · good 2.35 · good 31.10 · out of range Poor
Thu 23:00 0.08 · good 2.72 · good 31.00 · out of range Poor
Fri 00:00 0.08 · good 2.50 · good 30.90 · out of range Poor
Fri 01:00 0.08 · good 1.50 · good 30.80 · out of range Poor
Fri 02:00 0.08 · good 1.32 · good 30.80 · out of range Poor
Fri 03:00 0.08 · good 1.57 · good 30.70 · out of range Poor
Fri 04:00 0.06 · good 1.14 · good 30.70 · out of range Poor
Fri 05:00 0.06 · good 1.59 · good 30.60 · out of range Poor
Fri 06:00 0.06 · good 1.90 · good 30.60 · out of range Poor
Fri 07:00 0.06 · good 2.02 · good 30.50 · out of range Poor
Fri 08:00 0.06 · good 1.74 · good 30.60 · out of range Excellent
Fri 09:00 0.06 · good 2.08 · good 30.70 · out of range Excellent
Fri 10:00 0.06 · good 1.95 · good 30.80 · out of range Excellent
Fri 11:00 0.06 · good 1.79 · good 31.00 · out of range Excellent
Fri 12:00 0.06 · good 4.30 · good 31.10 · out of range Good
Fri 13:00 0.06 · good 2.22 · good 31.20 · out of range Good
Fri 14:00 0.06 · good 3.22 · good 31.30 · out of range Good
Fri 15:00 0.06 · good 3.65 · good 31.30 · out of range Good
Fri 16:00 0.04 · good 3.22 · good 31.30 · out of range Good
Fri 17:00 0.04 · good 3.20 · good 31.30 · out of range Good
Fri 18:00 0.04 · good 2.15 · good 31.20 · out of range Excellent
Fri 19:00 0.04 · good 1.99 · good 31.30 · out of range Good
Fri 20:00 0.04 · good 1.75 · good 31.20 · out of range Poor
Fri 21:00 0.04 · good 1.12 · good 31.20 · out of range Poor
Fri 22:00 0.04 · good 0.88 · good 31.10 · out of range Poor
Fri 23:00 0.04 · good 1.71 · good 31.10 · out of range Poor
Sat 00:00 0.04 · good 2.47 · good 31.10 · out of range Poor
Sat 01:00 0.04 · good 2.97 · good 31.00 · out of range Poor
Sat 02:00 0.04 · good 1.72 · good 31.00 · out of range Poor
Sat 03:00 0.04 · good 1.96 · good 30.90 · out of range Poor
Sat 04:00 0.04 · good 1.71 · good 30.90 · out of range Poor
Sat 05:00 0.04 · good 2.18 · good 30.90 · out of range Poor
Sat 06:00 0.04 · good 2.02 · good 30.80 · out of range Poor
Sat 07:00 0.04 · good 3.07 · good 30.80 · out of range Poor
Sat 08:00 0.04 · good 1.65 · good 30.80 · out of range Excellent
Sat 09:00 0.04 · good 3.31 · good 30.90 · out of range Excellent
Sat 10:00 0.04 · good 3.02 · good 31.00 · out of range Excellent
Sat 11:00 0.04 · good 3.35 · good 31.00 · out of range Excellent
Sat 12:00 0.04 · good 2.83 · good 31.10 · out of range Excellent
Sat 13:00 0.04 · good 3.11 · good 31.20 · out of range Good