What is the best time of day to snorkel in Perhentian Islands?

Snorkel in daylight, if possible in the morning before the wind picks up. Currents are often weaker near high slack tide. SnorkelForecast scores each daylight hour for Perhentian Islands.

What is the best tide for snorkeling?

High slack tide, within about an hour of the high-tide peak, often has weaker currents. Strong low tides and tidal flow near channels or headlands reduce the score.

MARINE REPORT / 72 HOURS

Perhentian Islands Snorkel Report Today

Malaysia · Updated Mon 14:22 (+08) · Source: Snapshot

The skinny

Go in the best window Data updated Mon 14:22 (+08)

Perhentian Islands has a usable snorkeling window around Mon 17:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 7.0/10

Mon 16:00 (+08)

Later today

Good · 6.7/10

Mon 17:00 (+08)

Next three days

Excellent · 8.2/10

Wed 11:00 (+08)

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

Score: 6.7/10

Best time: Mon 17:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Mon 17:00 (Good). Peak afternoon wind is about 2.8 m/s.

Email me when it is good

Sunrise

06:54

Sunset

18:53

Water

31.5°C

Max air

28.4°C

Sky

Clear

23% cloud

Good model window in the next 72 hours

Next good model window: Mon 17:00–18:00 (43% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Monday

✅ Good conditions

Main blocker: Sea temperature

Tuesday

✅ Excellent conditions

Main blocker: Sea temperature

Wednesday

✅ Excellent conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Mon 17:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

Sea temperature (69 hours)
Tide/current (45 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: Tue 04:00

Tue 04:00, Wed 04:00, Wed 17:00, Thu 05:00

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 current forecast

Mon 16:00 – Thu 16:00 (+08)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.77 around Tue 12:00; 11 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 0.14m to 0.18m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.23 to 4.79m/s).

Tides range from 0.38m to 1.41m; 1 of 24 hours are in or near peak slack windows.

72-hour forecast overview

Mon 17:00 Good 🌟 Good

Mon 18:00 Good 🌟 Good

Mon 19:00 Poor ❌ Limited

Mon 20:00 Poor ❌ Limited

Mon 21:00 Poor ❌ Limited

Mon 22:00 Poor ❌ Limited

Mon 23:00 Poor ❌ Limited

Tue 00:00 Poor ❌ Limited

Tue 01:00 Poor ❌ Limited

Tue 02:00 Poor ❌ Limited

Tue 03:00 Poor ❌ Limited

Tue 04:00 Poor ❌ Limited

Tue 05:00 Poor ❌ Limited

Tue 06:00 Poor ❌ Limited

Tue 07:00 Poor ❌ Limited

Tue 08:00 Good 🌟 Good

Tue 09:00 Excellent ✅ Excellent

Tue 10:00 Excellent ✅ Excellent

Tue 11:00 Excellent ✅ Excellent

Tue 12:00 Excellent ✅ Excellent

Tue 13:00 Excellent ✅ Excellent

Tue 14:00 Excellent ✅ Excellent

Tue 15:00 Excellent ✅ Excellent

Tue 16:00 Good 🌟 Good

Tue 17:00 Excellent ✅ Excellent

Tue 18:00 Excellent ✅ Excellent

Tue 19:00 Poor ❌ Limited

Tue 20:00 Poor ❌ Limited

Tue 21:00 Poor ❌ Limited

Tue 22:00 Poor ❌ Limited

Tue 23:00 Poor ❌ Limited

Wed 00:00 Poor ❌ Limited

Wed 01:00 Poor ❌ Limited

Wed 02:00 Poor ❌ Limited

Wed 03:00 Poor ❌ Limited

Wed 04:00 Poor ❌ Limited

Wed 05:00 Poor ❌ Limited

Wed 06:00 Poor ❌ Limited

Wed 07:00 Poor ❌ Limited

Wed 08:00 Excellent ✅ Excellent

Wed 09:00 Excellent ✅ Excellent

Wed 10:00 Excellent ✅ Excellent

Wed 11:00 Excellent ✅ Excellent

Wed 12:00 Excellent ✅ Excellent

Wed 13:00 Excellent ✅ Excellent

Wed 14:00 Excellent ✅ Excellent

Wed 15:00 Excellent ✅ Excellent

Wed 16:00 Excellent ✅ Excellent

Wed 17:00 Excellent ✅ Excellent

Wed 18:00 Excellent ✅ Excellent

Wed 19:00 Poor ❌ Limited

Wed 20:00 Poor ❌ Limited

Wed 21:00 Poor ❌ Limited

Wed 22:00 Poor ❌ Limited

Wed 23:00 Poor ❌ Limited

Thu 00:00 Poor ❌ Limited

Thu 01:00 Poor ❌ Limited

Thu 02:00 Poor ❌ Limited

Thu 03:00 Poor ❌ Limited

Thu 04:00 Poor ❌ Limited

Thu 05:00 Poor ❌ Limited

Thu 06:00 Poor ❌ Limited

Thu 07:00 Poor ❌ Limited

Thu 08:00 Excellent ✅ Excellent

Thu 09:00 Excellent ✅ Excellent

Thu 10:00 Excellent ✅ Excellent

Thu 11:00 Excellent ✅ Excellent

Thu 12:00 Excellent ✅ Excellent

Thu 13:00 Excellent ✅ Excellent

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
Mon 17:00	0.18 · good	2.82 · good	31.50 · out of range	Good
Mon 18:00	0.18 · good	2.65 · good	31.40 · out of range	Good
Mon 19:00	0.18 · good	3.17 · good	31.30 · out of range	Poor
Mon 20:00	0.18 · good	2.96 · good	31.30 · out of range	Poor
Mon 21:00	0.18 · good	4.79 · good	31.20 · out of range	Poor
Mon 22:00	0.16 · good	3.48 · good	31.20 · out of range	Poor
Mon 23:00	0.16 · good	3.25 · good	31.10 · out of range	Poor
Tue 00:00	0.16 · good	2.10 · good	31.10 · out of range	Poor
Tue 01:00	0.14 · good	2.51 · good	31.00 · out of range	Poor
Tue 02:00	0.14 · good	2.30 · good	31.00 · out of range	Poor
Tue 03:00	0.14 · good	1.68 · good	30.90 · out of range	Poor
Tue 04:00	0.14 · good	1.77 · good	30.90 · out of range	Poor
Tue 05:00	0.14 · good	1.90 · good	30.90 · out of range	Poor
Tue 06:00	0.14 · good	1.23 · good	30.80 · out of range	Poor
Tue 07:00	0.14 · good	2.32 · good	30.80 · out of range	Poor
Tue 08:00	0.14 · good	3.31 · good	30.90 · out of range	Good
Tue 09:00	0.14 · good	2.80 · good	30.90 · out of range	Excellent
Tue 10:00	0.14 · good	2.21 · good	31.10 · out of range	Excellent
Tue 11:00	0.14 · good	2.45 · good	31.20 · out of range	Excellent
Tue 12:00	0.14 · good	2.06 · good	31.30 · out of range	Excellent
Tue 13:00	0.14 · good	2.61 · good	31.40 · out of range	Excellent
Tue 14:00	0.14 · good	2.99 · good	31.50 · out of range	Excellent
Tue 15:00	0.14 · good	3.76 · good	31.50 · out of range	Excellent
Tue 16:00	0.14 · good	3.60 · good	31.40 · out of range	Good
Tue 17:00	0.14 · good	2.83 · good	31.40 · out of range	Excellent
Tue 18:00	0.14 · good	1.90 · good	31.30 · out of range	Excellent
Tue 19:00	0.14 · good	1.76 · good	31.20 · out of range	Poor
Tue 20:00	0.14 · good	3.31 · good	31.10 · out of range	Poor
Tue 21:00	0.14 · good	3.00 · good	31.10 · out of range	Poor
Tue 22:00	0.14 · good	2.14 · good	31.00 · out of range	Poor
Tue 23:00	0.14 · good	2.56 · good	31.00 · out of range	Poor
Wed 00:00	0.14 · good	3.22 · good	31.00 · out of range	Poor
Wed 01:00	0.14 · good	4.08 · good	30.90 · out of range	Poor
Wed 02:00	0.14 · good	2.98 · good	30.90 · out of range	Poor
Wed 03:00	0.14 · good	1.84 · good	30.90 · out of range	Poor
Wed 04:00	0.14 · good	1.51 · good	30.90 · out of range	Poor
Wed 05:00	0.14 · good	1.75 · good	30.90 · out of range	Poor
Wed 06:00	0.14 · good	1.66 · good	30.80 · out of range	Poor
Wed 07:00	0.14 · good	1.84 · good	30.80 · out of range	Poor
Wed 08:00	0.14 · good	2.16 · good	30.90 · out of range	Excellent
Wed 09:00	0.14 · good	1.42 · good	30.90 · out of range	Excellent
Wed 10:00	0.12 · good	1.28 · good	31.10 · out of range	Excellent
Wed 11:00	0.12 · good	0.78 · good	31.20 · out of range	Excellent
Wed 12:00	0.12 · good	1.35 · good	31.30 · out of range	Excellent
Wed 13:00	0.12 · good	1.66 · good	31.40 · out of range	Excellent
Wed 14:00	0.12 · good	1.96 · good	31.50 · out of range	Excellent
Wed 15:00	0.12 · good	2.44 · good	31.50 · out of range	Excellent
Wed 16:00	0.12 · good	3.05 · good	31.50 · out of range	Excellent
Wed 17:00	0.12 · good	3.27 · good	31.40 · out of range	Excellent
Wed 18:00	0.12 · good	2.82 · good	31.30 · out of range	Excellent
Wed 19:00	0.12 · good	2.02 · good	31.30 · out of range	Poor
Wed 20:00	0.12 · good	1.42 · good	31.20 · out of range	Poor
Wed 21:00	0.12 · good	1.11 · good	31.20 · out of range	Poor
Wed 22:00	0.12 · good	0.91 · good	31.10 · out of range	Poor
Wed 23:00	0.12 · good	2.08 · good	31.10 · out of range	Poor
Thu 00:00	0.12 · good	2.28 · good	31.10 · out of range	Poor
Thu 01:00	0.12 · good	1.77 · good	31.00 · out of range	Poor
Thu 02:00	0.12 · good	2.31 · good	31.00 · out of range	Poor
Thu 03:00	0.12 · good	1.27 · good	30.90 · out of range	Poor
Thu 04:00	0.12 · good	1.30 · good	30.90 · out of range	Poor
Thu 05:00	0.12 · good	1.13 · good	30.80 · out of range	Poor
Thu 06:00	0.12 · good	1.14 · good	30.80 · out of range	Poor
Thu 07:00	0.12 · good	1.30 · good	30.80 · out of range	Poor
Thu 08:00	0.12 · good	1.74 · good	30.80 · out of range	Excellent
Thu 09:00	0.12 · good	1.78 · good	30.90 · out of range	Excellent
Thu 10:00	0.12 · good	1.64 · good	31.00 · out of range	Excellent
Thu 11:00	0.12 · good	1.92 · good	31.20 · out of range	Excellent
Thu 12:00	0.12 · good	1.51 · good	31.30 · out of range	Excellent
Thu 13:00	0.12 · good	1.87 · good	31.50 · out of range	Excellent