MARINE REPORT / 72 HOURS

Koh Kradan Snorkel Report Today

Thailand · Updated Sun 09:09 (+07) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 09:09 (+07)

Koh Kradan has a usable snorkeling window around Sun 12:00. The main thing to watch is sea temperature.

Right now (forecast)

Excellent · 7.4/10

Sun 11:00 (+07)

Later today

Excellent · 7.5/10

Sun 12:00 (+07)

Next three days

Excellent · 7.5/10

Sun 12:00 (+07)

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

Score: 7.5/10

Best time: Sun 12:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Sun 12:00 (Excellent). Peak afternoon wind is about 4.3 m/s.

Email me when it is good

Sunrise

06:09

Sunset

18:06

Water

31.4°C

Max air

28.0°C

Sky

Partly cloudy

66% cloud

Good model window in the next 72 hours

Next good model window: Sun 12:00–18:00 (48% 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 12:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (69 hours)
  • Darkness (36 hours)
  • Tide/current (20 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

Wed 11:00 – Sat 11:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.57 around Wed 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.

8/24 sampled hours stay at or below 0.36m (range 0.34m to 0.4m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.51 to 4.03m/s).

Tides range from -0.19m to 1.47m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
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
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
Thu 13:00 0.38 · high 3.05 · good 31.10 · out of range Fair
Thu 14:00 0.38 · high 3.44 · good 31.10 · out of range Fair
Thu 15:00 0.36 · good 3.36 · good 31.10 · out of range Fair
Thu 16:00 0.36 · good 3.22 · good 31.10 · out of range Fair
Thu 17:00 0.36 · good 3.11 · good 31.00 · out of range Fair
Thu 18:00 0.34 · good 3.16 · good 31.00 · out of range Fair
Thu 19:00 0.34 · good 2.62 · good 30.40 · good Poor
Thu 20:00 0.34 · good 2.20 · good 30.40 · good Poor
Thu 21:00 0.32 · good 2.38 · good 30.40 · good Poor
Thu 22:00 0.32 · good 2.76 · good 30.40 · good Poor
Thu 23:00 0.32 · good 3.74 · good 30.40 · good Poor
Fri 00:00 0.32 · good 3.31 · good 30.30 · good Poor
Fri 01:00 0.32 · good 3.27 · good 30.30 · good Poor
Fri 02:00 0.32 · good 3.50 · good 30.30 · good Poor
Fri 03:00 0.32 · good 6.15 · high 30.30 · good Poor
Fri 04:00 0.32 · good 5.00 · good 30.30 · good Poor
Fri 05:00 0.32 · good 2.95 · good 30.30 · good Poor
Fri 06:00 0.32 · good 1.86 · good 30.30 · good Poor
Fri 07:00 0.36 · good 3.59 · good 30.30 · good Good
Fri 08:00 0.36 · good 2.80 · good 30.40 · good Good
Fri 09:00 0.34 · good 3.02 · good 30.40 · good Good
Fri 10:00 0.34 · good 3.61 · good 30.40 · good Good
Fri 11:00 0.34 · good 4.23 · good 30.50 · out of range Fair
Fri 12:00 0.32 · good 4.24 · good 30.50 · out of range Fair
Fri 13:00 0.32 · good 4.87 · good 30.50 · out of range Fair
Fri 14:00 0.32 · good 5.93 · high 30.50 · out of range Fair
Fri 15:00 0.32 · good 6.76 · high 30.50 · out of range Fair
Fri 16:00 0.32 · good 5.74 · high 30.50 · out of range Fair
Fri 17:00 0.34 · good 4.70 · good 30.50 · out of range Fair
Fri 18:00 0.38 · high 5.72 · high 30.60 · out of range Fair
Fri 19:00 0.38 · high 5.23 · good 30.50 · out of range Poor
Fri 20:00 0.40 · high 5.93 · high 30.50 · out of range Poor
Fri 21:00 0.44 · high 4.15 · good 30.50 · out of range Poor
Fri 22:00 0.46 · high 5.54 · high 30.40 · good Poor
Fri 23:00 0.48 · high 7.87 · high 30.40 · good Poor
Sat 00:00 0.48 · high 5.51 · high 30.30 · good Poor
Sat 01:00 0.50 · high 4.35 · good 30.30 · good Poor
Sat 02:00 0.54 · high 4.20 · good 30.30 · good Poor
Sat 03:00 0.60 · high 4.86 · good 30.30 · good Poor
Sat 04:00 0.64 · high 7.62 · high 30.30 · good Poor
Sat 05:00 0.60 · high 5.32 · good 30.30 · good Poor
Sat 06:00 0.56 · high 4.13 · good 30.30 · good Poor
Sat 07:00 0.52 · high 5.16 · good 30.30 · good Fair
Sat 08:00 0.50 · high 5.70 · high 30.30 · good Fair
Sat 09:00 0.46 · high 3.26 · good 30.40 · good Fair
Sat 10:00 0.44 · high 5.70 · high 30.40 · good Fair