MARINE REPORT / 72 HOURS

Koh Kradan Snorkel Report Today

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

The skinny

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

Koh Kradan has a usable snorkeling window around Sat 18:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 6.6/10

Sat 17:00 (+07)

Later today

Good · 6.7/10

Sat 18:00 (+07)

Next three days

Excellent · 7.9/10

Sun 13:00 (+07)

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

Score: 6.7/10

Best time: Sat 18:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Sat 18:00 (Good). Peak afternoon wind is about 3.4 m/s.

Email me when it is good

Sunrise

06:09

Sunset

18:07

Water

31.4°C

Max air

28.3°C

Sky

Cloudy

100% cloud

Good model window in the next 72 hours

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

3-day planner Best available Show data

3-day planner

Saturday

✅ Good 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 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (71 hours)
  • Darkness (36 hours)
  • Tide/current (13 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

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

Wed 17:00 – Sat 17:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.67 around Thu 07:00; 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 0.16m to 0.22m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.87 to 4.32m/s).

Tides range from -0.58m to 1.53m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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 17:00 0.18 · good 3.43 · good 30.90 · out of range Good
Wed 18:00 0.20 · good 4.05 · good 30.80 · out of range Good
Wed 19:00 0.20 · good 3.79 · good 30.80 · out of range Poor
Wed 20:00 0.20 · good 3.40 · good 30.80 · out of range Poor
Wed 21:00 0.22 · good 3.62 · good 30.70 · out of range Poor
Wed 22:00 0.22 · good 2.74 · good 30.70 · out of range Poor
Wed 23:00 0.22 · good 3.16 · good 30.70 · out of range Poor
Thu 00:00 0.20 · good 1.85 · good 30.70 · out of range Poor
Thu 01:00 0.20 · good 1.00 · good 30.70 · out of range Poor
Thu 02:00 0.20 · good 0.87 · good 30.70 · out of range Poor
Thu 03:00 0.20 · good 2.92 · good 30.60 · out of range Poor
Thu 04:00 0.20 · good 2.23 · good 30.60 · out of range Poor
Thu 05:00 0.20 · good 2.80 · good 30.60 · out of range Poor
Thu 06:00 0.18 · good 3.10 · good 30.60 · out of range Poor
Thu 07:00 0.18 · good 3.09 · good 30.60 · out of range Good
Thu 08:00 0.18 · good 3.68 · good 30.60 · out of range Good
Thu 09:00 0.16 · good 4.27 · good 30.70 · out of range Good
Thu 10:00 0.16 · good 4.32 · good 30.70 · out of range Good
Thu 11:00 0.16 · good 3.94 · good 30.70 · out of range Good
Thu 12:00 0.18 · good 3.27 · good 30.80 · out of range Good
Thu 13:00 0.18 · good 3.96 · good 30.80 · out of range Good
Thu 14:00 0.18 · good 3.81 · good 30.80 · out of range Good
Thu 15:00 0.20 · good 4.16 · good 30.80 · out of range Good
Thu 16:00 0.20 · good 2.80 · good 30.80 · out of range Good
Thu 17:00 0.20 · good 4.07 · good 30.80 · out of range Fair
Thu 18:00 0.20 · good 4.39 · good 30.90 · out of range Good
Thu 19:00 0.22 · good 3.62 · good 30.90 · out of range Poor
Thu 20:00 0.22 · good 3.82 · good 30.90 · out of range Poor
Thu 21:00 0.22 · good 4.18 · good 30.90 · out of range Poor
Thu 22:00 0.18 · good 4.42 · good 30.90 · out of range Poor
Thu 23:00 0.18 · good 3.42 · good 30.90 · out of range Poor
Fri 00:00 0.16 · good 3.47 · good 30.80 · out of range Poor
Fri 01:00 0.16 · good 3.91 · good 30.80 · out of range Poor
Fri 02:00 0.16 · good 1.79 · good 30.80 · out of range Poor
Fri 03:00 0.14 · good 3.11 · good 30.80 · out of range Poor
Fri 04:00 0.14 · good 2.30 · good 30.80 · out of range Poor
Fri 05:00 0.14 · good 2.17 · good 30.80 · out of range Poor
Fri 06:00 0.14 · good 1.94 · good 30.80 · out of range Poor
Fri 07:00 0.14 · good 2.42 · good 30.80 · out of range Good
Fri 08:00 0.14 · good 2.69 · good 30.80 · out of range Good
Fri 09:00 0.14 · good 2.69 · good 30.90 · out of range Good
Fri 10:00 0.14 · good 2.69 · good 31.00 · out of range Good
Fri 11:00 0.16 · good 2.66 · good 31.00 · out of range Good
Fri 12:00 0.16 · good 2.58 · good 31.10 · out of range Good
Fri 13:00 0.18 · good 4.10 · good 31.10 · out of range Good
Fri 14:00 0.18 · good 4.12 · good 31.10 · out of range Good
Fri 15:00 0.20 · good 4.27 · good 31.10 · out of range Good
Fri 16:00 0.20 · good 4.90 · good 31.10 · out of range Good
Fri 17:00 0.18 · good 4.46 · good 31.00 · out of range Good
Fri 18:00 0.26 · good 3.74 · good 30.90 · out of range Good
Fri 19:00 0.26 · good 3.67 · good 30.90 · out of range Poor
Fri 20:00 0.24 · good 0.61 · good 30.90 · out of range Poor
Fri 21:00 0.24 · good 3.43 · good 30.90 · out of range Poor
Fri 22:00 0.22 · good 3.23 · good 30.90 · out of range Poor
Fri 23:00 0.26 · good 2.25 · good 30.90 · out of range Poor
Sat 00:00 0.26 · good 2.05 · good 30.80 · out of range Poor
Sat 01:00 0.24 · good 1.65 · good 30.80 · out of range Poor
Sat 02:00 0.24 · good 1.15 · good 30.80 · out of range Poor
Sat 03:00 0.22 · good 1.17 · good 30.80 · out of range Poor
Sat 04:00 0.22 · good 1.39 · good 30.80 · out of range Poor
Sat 05:00 0.22 · good 1.50 · good 30.80 · out of range Poor
Sat 06:00 0.20 · good 1.89 · good 30.80 · out of range Poor
Sat 07:00 0.20 · good 2.11 · good 30.80 · out of range Good
Sat 08:00 0.20 · good 1.96 · good 30.80 · out of range Good
Sat 09:00 0.18 · good 1.10 · good 30.90 · out of range Good
Sat 10:00 0.18 · good 0.05 · good 31.00 · out of range Good
Sat 11:00 0.18 · good 0.63 · good 31.10 · out of range Excellent
Sat 12:00 0.16 · good 1.34 · good 31.20 · out of range Good
Sat 13:00 0.16 · good 1.94 · good 31.20 · out of range Good
Sat 14:00 0.16 · good 2.21 · good 31.20 · out of range Good
Sat 15:00 0.14 · good 3.13 · good 31.20 · out of range Good
Sat 16:00 0.14 · good 3.18 · good 31.20 · out of range Good