MARINE REPORT / 72 HOURS

Koh Kradan Snorkel Report Today

Thailand · Updated Sat 07:29 (+07) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 07:29 (+07)

Koh Kradan has a usable snorkeling window around Sat 11:00. The main thing to watch is sea temperature.

Right now (forecast)

Excellent · 7.7/10

Sat 10:00 (+07)

Later today

Excellent · 7.7/10

Sat 12:00 (+07)

Next three days

Excellent · 7.8/10

Mon 10:00 (+07)

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

Score: 7.7/10

Best time: Sat 11:00

Main risk: Sea Temperature

Best morning signal: Sat 11:00 (Excellent).

Best afternoon signal: Sat 12:00 (Excellent). Peak afternoon wind is about 2.5 m/s.

Email me when it is good

Sunrise

06:09

Sunset

18:07

Water

31.5°C

Max air

28.8°C

Sky

Cloudy

84% cloud

Good model window in the next 72 hours

Next good model window: Sat 11:00–18:00 (47% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

✅ Excellent conditions

Main blocker: Sea temperature

Sunday

✅ Excellent conditions

Main blocker: Sea temperature

Monday

✅ Excellent conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Sat 11:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (68 hours)
  • Darkness (36 hours)
  • Tide/current (15 hours)

Jellyfish drift risk

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

Low · 31/100

Low peak drift risk around Sat 20:00.

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: Sun 01:00

Sat 13:00, Sun 01:00, Sun 14:00, Mon 02:00, Mon 16:00, Tue 04:00

Nearby alternatives in Thailand

Koh Phi Phi

74 km away

✅ Good

Koh Lipe

87 km away

✅ Good

Railay

94 km away

✅ Good

Similan Islands

234 km away

✅ Good

Advanced forecast data

Viewing historical data

Thu 10:00 – Sun 10:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.7 around Thu 11:00; 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 0.12m to 0.12m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.65 to 3.57m/s).

Tides range from -0.36m to 1.43m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
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
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Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Thu 10:00 0.12 · good 1.69 · good 31.20 · out of range Good
Thu 11:00 0.12 · good 0.65 · good 31.30 · out of range Good
Thu 12:00 0.12 · good 1.40 · good 31.40 · out of range Good
Thu 13:00 0.12 · good 3.21 · good 31.50 · out of range Good
Thu 14:00 0.12 · good 2.55 · good 31.50 · out of range Good
Thu 15:00 0.12 · good 3.57 · good 31.50 · out of range Good
Thu 16:00 0.12 · good 2.62 · good 31.40 · out of range Good
Thu 17:00 0.12 · good 2.28 · good 31.30 · out of range Good
Thu 18:00 0.12 · good 2.41 · good 31.30 · out of range Good
Thu 19:00 0.12 · good 1.16 · good 31.30 · out of range Poor
Thu 20:00 0.12 · good 1.32 · good 31.30 · out of range Poor
Thu 21:00 0.12 · good 1.95 · good 31.20 · out of range Poor
Thu 22:00 0.12 · good 1.98 · good 31.20 · out of range Poor
Thu 23:00 0.12 · good 1.88 · good 31.10 · out of range Poor
Fri 00:00 0.12 · good 2.05 · good 31.10 · out of range Poor
Fri 01:00 0.12 · good 3.05 · good 31.00 · out of range Poor
Fri 02:00 0.12 · good 2.60 · good 31.00 · out of range Poor
Fri 03:00 0.12 · good 2.52 · good 30.90 · out of range Poor
Fri 04:00 0.12 · good 2.82 · good 30.90 · out of range Poor
Fri 05:00 0.12 · good 2.91 · good 30.90 · out of range Poor
Fri 06:00 0.12 · good 2.97 · good 30.90 · out of range Poor
Fri 07:00 0.12 · good 2.62 · good 30.90 · out of range Good
Fri 08:00 0.12 · good 2.67 · good 30.90 · out of range Good
Fri 09:00 0.12 · good 1.88 · good 31.10 · out of range Good
Fri 10:00 0.12 · good 1.38 · good 31.20 · out of range Good
Fri 11:00 0.12 · good 0.70 · good 31.30 · out of range Excellent
Fri 12:00 0.12 · good 0.22 · good 31.50 · out of range Good
Fri 13:00 0.12 · good 1.16 · good 31.50 · out of range Good
Fri 14:00 0.12 · good 1.92 · good 31.50 · out of range Good
Fri 15:00 0.12 · good 2.42 · good 31.50 · out of range Good
Fri 16:00 0.12 · good 0.91 · good 31.50 · out of range Good
Fri 17:00 0.12 · good 2.18 · good 31.50 · out of range Good
Fri 18:00 0.12 · good 0.72 · good 31.40 · out of range Good
Fri 19:00 0.12 · good 3.30 · good 31.30 · out of range Poor
Fri 20:00 0.12 · good 3.16 · good 31.30 · out of range Poor
Fri 21:00 0.12 · good 1.72 · good 31.20 · out of range Poor
Fri 22:00 0.12 · good 1.32 · good 31.20 · out of range Poor
Fri 23:00 0.12 · good 1.29 · good 31.10 · out of range Poor
Sat 00:00 0.12 · good 1.27 · good 31.00 · out of range Poor
Sat 01:00 0.12 · good 1.31 · good 31.00 · out of range Poor
Sat 02:00 0.12 · good 2.28 · good 30.90 · out of range Poor
Sat 03:00 0.12 · good 1.13 · good 30.90 · out of range Poor
Sat 04:00 0.12 · good 0.53 · good 30.80 · out of range Poor
Sat 05:00 0.12 · good 1.61 · good 30.80 · out of range Poor
Sat 06:00 0.10 · good 1.21 · good 30.80 · out of range Poor
Sat 07:00 0.10 · good 1.35 · good 30.80 · out of range Good
Sat 08:00 0.10 · good 0.88 · good 30.90 · out of range Good
Sat 09:00 0.10 · good 1.58 · good 31.00 · out of range Good
Sat 10:00 0.10 · good 1.06 · good 31.10 · out of range Good
Sat 11:00 0.10 · good 0.67 · good 31.20 · out of range Good
Sat 12:00 0.10 · good 1.95 · good 31.30 · out of range Good
Sat 13:00 0.10 · good 2.58 · good 31.40 · out of range Good
Sat 14:00 0.10 · good 1.67 · good 31.40 · out of range Good
Sat 15:00 0.10 · good 2.36 · good 31.40 · out of range Good
Sat 16:00 0.10 · good 2.23 · good 31.40 · out of range Good
Sat 17:00 0.10 · good 2.16 · good 31.30 · out of range Good
Sat 18:00 0.10 · good 1.91 · good 31.30 · out of range Good
Sat 19:00 0.10 · good 1.25 · good 31.20 · out of range Poor
Sat 20:00 0.10 · good 0.92 · good 31.20 · out of range Poor
Sat 21:00 0.10 · good 1.81 · good 31.20 · out of range Poor
Sat 22:00 0.10 · good 3.58 · good 31.10 · out of range Poor
Sat 23:00 0.10 · good 2.30 · good 31.10 · out of range Poor
Sun 00:00 0.10 · good 2.61 · good 31.10 · out of range Poor
Sun 01:00 0.10 · good 2.48 · good 31.00 · out of range Poor
Sun 02:00 0.10 · good 1.54 · good 31.00 · out of range Poor
Sun 03:00 0.10 · good 0.75 · good 31.00 · out of range Poor
Sun 04:00 0.10 · good 2.74 · good 30.90 · out of range Poor
Sun 05:00 0.10 · good 1.21 · good 30.90 · out of range Poor
Sun 06:00 0.10 · good 2.52 · good 30.90 · out of range Poor
Sun 07:00 0.10 · good 0.89 · good 30.90 · out of range Excellent
Sun 08:00 0.10 · good 0.85 · good 31.00 · out of range Excellent
Sun 09:00 0.10 · good 0.86 · good 31.10 · out of range Excellent