MARINE REPORT / 72 HOURS

Koh Kradan Snorkel Report Today

Thailand · Updated Sun 12:17 (+07) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 12:17 (+07)

Koh Kradan has a usable snorkeling window around Sun 14:00. The main thing to watch is sea temperature.

Right now (forecast)

Excellent · 7.4/10

Sun 13:00 (+07)

Later today

Excellent · 7.3/10

Sun 17:00 (+07)

Next three days

Excellent · 7.5/10

Mon 10:00 (+07)

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

Score: 7.3/10

Best time: Sun 14:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Sun 17:00 (Excellent). Peak afternoon wind is about 4.3 m/s.

Email me when it is good

Sunrise

06:09

Sunset

18:06

Water

31.5°C

Max air

28.0°C

Sky

Cloudy

95% cloud

Good model window in the next 72 hours

Next good model window: Sun 14:00–18:00 (49% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

✅ Excellent conditions

Main blocker: Sea temperature

Monday

✅ Excellent conditions

Main blocker: Sea temperature

Tuesday

✅ Good conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Sun 14:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (70 hours)
  • Darkness (36 hours)
  • Tide/current (23 hours)

Jellyfish drift risk

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

Low · 29/100

Low peak drift risk around Mon 07:00.

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: Mon 02:00

Sun 14:00, Mon 02:00, Tue 04:00, Tue 19:00

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

Mon 13:00 – Thu 13:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.71 around Tue 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.

0/24 sampled hours stay at or below 0.36m (range 0.38m to 0.46m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.22 to 3.29m/s).

Tides range from 0.21m to 1.02m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
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 13:00 0.46 · high 2.41 · good 30.80 · out of range Fair
Mon 14:00 0.46 · high 1.47 · good 30.80 · out of range Fair
Mon 15:00 0.44 · high 0.90 · good 30.90 · out of range Fair
Mon 16:00 0.44 · high 0.80 · good 30.90 · out of range Fair
Mon 17:00 0.44 · high 0.47 · good 30.90 · out of range Good
Mon 18:00 0.40 · high 0.38 · good 30.60 · out of range Good
Mon 19:00 0.40 · high 1.56 · good 30.60 · out of range Poor
Mon 20:00 0.40 · high 1.21 · good 30.60 · out of range Poor
Mon 21:00 0.40 · high 0.81 · good 30.60 · out of range Poor
Mon 22:00 0.42 · high 2.52 · good 30.50 · out of range Poor
Mon 23:00 0.42 · high 2.82 · good 30.50 · out of range Poor
Tue 00:00 0.42 · high 2.77 · good 30.50 · out of range Poor
Tue 01:00 0.42 · high 1.25 · good 30.40 · good Poor
Tue 02:00 0.42 · high 1.29 · good 30.40 · good Poor
Tue 03:00 0.42 · high 1.50 · good 30.40 · good Poor
Tue 04:00 0.42 · high 0.46 · good 30.30 · good Poor
Tue 05:00 0.42 · high 0.52 · good 30.30 · good Poor
Tue 06:00 0.40 · high 3.29 · good 30.30 · good Poor
Tue 07:00 0.40 · high 1.12 · good 30.30 · good Good
Tue 08:00 0.40 · high 1.30 · good 30.40 · good Good
Tue 09:00 0.38 · high 0.78 · good 30.50 · out of range Good
Tue 10:00 0.38 · high 0.22 · good 30.60 · out of range Good
Tue 11:00 0.38 · high 0.85 · good 30.70 · out of range Good
Tue 12:00 0.38 · high 1.62 · good 30.80 · out of range Good
Tue 13:00 0.38 · high 2.56 · good 30.90 · out of range Fair
Tue 14:00 0.38 · high 3.21 · good 30.90 · out of range Fair
Tue 15:00 0.36 · good 3.34 · good 30.90 · out of range Fair
Tue 16:00 0.36 · good 3.75 · good 30.90 · out of range Fair
Tue 17:00 0.36 · good 3.26 · good 30.80 · out of range Fair
Tue 18:00 0.36 · good 3.18 · good 30.90 · out of range Good
Tue 19:00 0.36 · good 2.26 · good 30.80 · out of range Poor
Tue 20:00 0.36 · good 3.34 · good 30.80 · out of range Poor
Tue 21:00 0.36 · good 2.12 · good 30.70 · out of range Poor
Tue 22:00 0.36 · good 1.25 · good 30.70 · out of range Poor
Tue 23:00 0.36 · good 2.23 · good 30.60 · out of range Poor
Wed 00:00 0.36 · good 1.36 · good 30.60 · out of range Poor
Wed 01:00 0.36 · good 1.28 · good 30.50 · out of range Poor
Wed 02:00 0.36 · good 2.35 · good 30.50 · out of range Poor
Wed 03:00 0.38 · high 4.91 · good 30.50 · out of range Poor
Wed 04:00 0.38 · high 3.91 · good 30.40 · good Poor
Wed 05:00 0.38 · high 2.08 · good 30.40 · good Poor
Wed 06:00 0.36 · good 1.63 · good 30.40 · good Poor
Wed 07:00 0.36 · good 3.67 · good 30.40 · good Good
Wed 08:00 0.36 · good 1.69 · good 30.50 · out of range Good
Wed 09:00 0.36 · good 0.90 · good 30.60 · out of range Good
Wed 10:00 0.36 · good 0.00 · good 30.70 · out of range Good
Wed 11:00 0.36 · good 0.51 · good 30.80 · out of range Good
Wed 12:00 0.34 · good 0.94 · good 31.00 · out of range Good
Wed 13:00 0.34 · good 2.57 · good 31.00 · out of range Fair
Wed 14:00 0.34 · good 3.51 · good 31.10 · out of range Fair
Wed 15:00 0.36 · good 2.83 · good 31.10 · out of range Fair
Wed 16:00 0.36 · good 2.14 · good 31.10 · out of range Fair
Wed 17:00 0.36 · good 2.08 · good 31.00 · out of range Fair
Wed 18:00 0.38 · high 2.89 · good 31.00 · out of range Good
Wed 19:00 0.38 · high 2.37 · good 31.00 · out of range Poor
Wed 20:00 0.38 · high 4.03 · good 30.90 · out of range Poor
Wed 21:00 0.38 · high 1.36 · good 30.90 · out of range Poor
Wed 22:00 0.38 · high 1.39 · good 30.90 · out of range Poor
Wed 23:00 0.36 · good 2.45 · good 30.80 · out of range Poor
Thu 00:00 0.38 · high 2.28 · good 30.80 · out of range Poor
Thu 01:00 0.38 · high 2.74 · good 30.70 · out of range Poor
Thu 02:00 0.38 · high 2.85 · good 30.70 · out of range Poor
Thu 03:00 0.40 · high 3.50 · good 30.60 · out of range Poor
Thu 04:00 0.40 · high 3.65 · good 30.60 · out of range Poor
Thu 05:00 0.40 · high 2.53 · good 30.60 · out of range Poor
Thu 06:00 0.40 · high 2.66 · good 30.60 · out of range Poor
Thu 07:00 0.40 · high 3.15 · good 30.60 · out of range Good
Thu 08:00 0.40 · high 3.48 · good 30.60 · out of range Good
Thu 09:00 0.38 · high 3.94 · good 30.70 · out of range Good
Thu 10:00 0.38 · high 4.02 · good 30.80 · out of range Good
Thu 11:00 0.38 · high 3.55 · good 30.90 · out of range Fair
Thu 12:00 0.38 · high 3.54 · good 31.00 · out of range Fair