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 10:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 6.5/10

Sun 09:00 (+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 10:00

Main risk: Sea Temperature

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

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

31.2°C

Max air

28.0°C

Sky

Cloudy

95% cloud

Good model window in the next 72 hours

Next good model window: Sun 10:00–18:00 (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 10:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (71 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

Fri 09:00 – Mon 09:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.6 around Fri 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.

9/24 sampled hours stay at or below 0.36m (range 0.32m to 0.64m).

Wind is at or below 5.4m/s in 14/24 sampled hours (range 3.02 to 7.87m/s).

Tides range from -0.58m to 1.65m; 1 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
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
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
Sat 11:00 0.44 · high 6.08 · high 30.50 · out of range Fair
Sat 12:00 0.46 · high 5.95 · high 30.50 · out of range Fair
Sat 13:00 0.46 · high 4.14 · good 30.50 · out of range Fair
Sat 14:00 0.48 · high 8.74 · high 30.50 · out of range Poor
Sat 15:00 0.52 · high 6.96 · high 30.50 · out of range Fair
Sat 16:00 0.54 · high 5.40 · good 30.50 · out of range Fair
Sat 17:00 0.56 · high 6.21 · high 30.50 · out of range Poor
Sat 18:00 0.48 · high 5.90 · high 30.30 · good Fair
Sat 19:00 0.50 · high 5.60 · high 30.30 · good Poor
Sat 20:00 0.62 · high 6.04 · high 30.30 · good Poor
Sat 21:00 0.56 · high 7.75 · high 30.30 · good Poor
Sat 22:00 0.52 · high 5.51 · high 30.20 · good Poor
Sat 23:00 0.54 · high 5.12 · good 30.20 · good Poor
Sun 00:00 0.56 · high 5.65 · high 30.20 · good Poor
Sun 01:00 0.58 · high 6.70 · high 30.20 · good Poor
Sun 02:00 0.58 · high 5.87 · high 30.20 · good Poor
Sun 03:00 0.60 · high 6.89 · high 30.20 · good Poor
Sun 04:00 0.60 · high 6.64 · high 30.20 · good Poor
Sun 05:00 0.60 · high 5.77 · high 30.20 · good Poor
Sun 06:00 0.62 · high 6.90 · high 30.20 · good Poor
Sun 07:00 0.62 · high 4.54 · good 30.20 · good Poor
Sun 08:00 0.62 · high 5.36 · good 30.20 · good Poor
Sun 09:00 0.62 · high 5.60 · high 30.30 · good Poor
Sun 10:00 0.62 · high 5.11 · good 30.30 · good Poor
Sun 11:00 0.60 · high 4.90 · good 30.30 · good Poor
Sun 12:00 0.60 · high 5.86 · high 30.40 · good Fair
Sun 13:00 0.58 · high 5.96 · high 30.40 · good Fair
Sun 14:00 0.62 · high 5.73 · high 30.40 · good Fair
Sun 15:00 0.68 · high 5.97 · high 30.40 · good Poor
Sun 16:00 0.72 · high 8.29 · high 30.30 · good Poor
Sun 17:00 0.74 · high 7.21 · high 30.30 · good Poor
Sun 18:00 0.74 · high 6.50 · high 30.20 · good Poor
Sun 19:00 0.82 · high 7.23 · high 30.20 · good Poor
Sun 20:00 0.82 · high 7.06 · high 30.20 · good Poor
Sun 21:00 0.82 · high 6.42 · high 30.20 · good Poor
Sun 22:00 0.82 · high 7.08 · high 30.20 · good Poor
Sun 23:00 0.80 · high 8.02 · high 30.20 · good Poor
Mon 00:00 0.80 · high 8.02 · high 30.20 · good Poor
Mon 01:00 0.78 · high 8.20 · high 30.20 · good Poor
Mon 02:00 0.78 · high 8.32 · high 30.20 · good Poor
Mon 03:00 0.76 · high 7.19 · high 30.20 · good Poor
Mon 04:00 0.76 · high 5.74 · high 30.20 · good Poor
Mon 05:00 0.74 · high 5.91 · high 30.20 · good Poor
Mon 06:00 0.72 · high 5.85 · high 30.20 · good Poor
Mon 07:00 0.70 · high 5.15 · good 30.20 · good Poor
Mon 08:00 0.68 · high 3.40 · good 30.20 · good Poor