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 09:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 6.8/10

Sat 08:00 (+07)

Later today

Excellent · 7.7/10

Sat 10:00 (+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 09:00

Main risk: Sea Temperature

Best morning signal: Sat 10:00 (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

31.2°C

Max air

28.8°C

Sky

Partly cloudy

43% cloud

Good model window in the next 72 hours

Next good model window: Sat 09:00–18:00 (49% 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 09:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (70 hours)
  • Darkness (36 hours)
  • Tide/current (17 hours)

Jellyfish drift risk

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

Low · 31/100

Low drift risk now.

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 current forecast

Sat 08:00 – Tue 08:00 (+07)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.77 around Sat 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.

24/24 sampled hours stay at or below 0.36m (range 0.1m to 0.14m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.22 to 4.07m/s).

Tides range from -0.05m to 1.07m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
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
Good 🌟 Good
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
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
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
Sat 09:00 0.14 · good 1.64 · good 31.20 · out of range Good
Sat 10:00 0.14 · good 1.28 · good 31.30 · out of range Excellent
Sat 11:00 0.14 · good 0.69 · good 31.50 · out of range Excellent
Sat 12:00 0.12 · good 0.78 · good 31.60 · out of range Excellent
Sat 13:00 0.12 · good 2.08 · good 31.70 · out of range Excellent
Sat 14:00 0.12 · good 2.15 · good 31.70 · out of range Good
Sat 15:00 0.10 · good 2.53 · good 31.60 · out of range Good
Sat 16:00 0.10 · good 0.62 · good 31.60 · out of range Excellent
Sat 17:00 0.10 · good 0.75 · good 31.50 · out of range Excellent
Sat 18:00 0.10 · good 0.22 · good 31.40 · out of range Excellent
Sat 19:00 0.10 · good 0.70 · good 31.30 · out of range Poor
Sat 20:00 0.10 · good 2.05 · good 31.30 · out of range Poor
Sat 21:00 0.10 · good 2.10 · good 31.30 · out of range Poor
Sat 22:00 0.10 · good 1.35 · good 31.20 · out of range Poor
Sat 23:00 0.10 · good 1.27 · good 31.20 · out of range Poor
Sun 00:00 0.10 · good 2.12 · good 31.20 · out of range Poor
Sun 01:00 0.10 · good 2.52 · good 31.10 · out of range Poor
Sun 02:00 0.10 · good 2.25 · good 31.10 · out of range Poor
Sun 03:00 0.10 · good 2.45 · good 31.00 · out of range Poor
Sun 04:00 0.10 · good 2.39 · good 30.90 · out of range Poor
Sun 05:00 0.10 · good 2.00 · good 30.90 · out of range Poor
Sun 06:00 0.10 · good 0.32 · good 30.80 · out of range Poor
Sun 07:00 0.10 · good 1.25 · good 30.80 · out of range Excellent
Sun 08:00 0.10 · good 4.07 · good 30.90 · out of range Good
Sun 09:00 0.10 · good 2.86 · good 31.00 · out of range Good
Sun 10:00 0.10 · good 1.63 · good 31.10 · out of range Excellent
Sun 11:00 0.10 · good 1.55 · good 31.20 · out of range Excellent
Sun 12:00 0.10 · good 1.66 · good 31.30 · out of range Excellent
Sun 13:00 0.10 · good 2.57 · good 31.30 · out of range Excellent
Sun 14:00 0.10 · good 2.35 · good 31.30 · out of range Excellent
Sun 15:00 0.10 · good 2.75 · good 31.30 · out of range Excellent
Sun 16:00 0.10 · good 2.51 · good 31.30 · out of range Good
Sun 17:00 0.10 · good 2.17 · good 31.20 · out of range Good
Sun 18:00 0.10 · good 1.03 · good 31.20 · out of range Excellent
Sun 19:00 0.10 · good 1.00 · good 31.20 · out of range Poor
Sun 20:00 0.10 · good 1.52 · good 31.20 · out of range Poor
Sun 21:00 0.10 · good 1.37 · good 31.10 · out of range Poor
Sun 22:00 0.10 · good 0.98 · good 31.10 · out of range Poor
Sun 23:00 0.10 · good 0.81 · good 31.10 · out of range Poor
Mon 00:00 0.10 · good 1.21 · good 31.10 · out of range Poor
Mon 01:00 0.10 · good 0.54 · good 31.00 · out of range Poor
Mon 02:00 0.10 · good 2.18 · good 31.00 · out of range Poor
Mon 03:00 0.10 · good 0.50 · good 31.00 · out of range Poor
Mon 04:00 0.10 · good 1.68 · good 30.90 · out of range Poor
Mon 05:00 0.10 · good 2.53 · good 30.90 · out of range Poor
Mon 06:00 0.10 · good 2.09 · good 30.90 · out of range Poor
Mon 07:00 0.10 · good 1.01 · good 30.90 · out of range Excellent
Mon 08:00 0.10 · good 1.69 · good 30.90 · out of range Excellent
Mon 09:00 0.10 · good 2.20 · good 30.90 · out of range Good
Mon 10:00 0.10 · good 1.81 · good 30.90 · out of range Excellent
Mon 11:00 0.10 · good 3.20 · good 30.90 · out of range Good
Mon 12:00 0.10 · good 3.50 · good 31.00 · out of range Good
Mon 13:00 0.10 · good 3.26 · good 31.00 · out of range Good
Mon 14:00 0.10 · good 3.19 · good 31.00 · out of range Good
Mon 15:00 0.10 · good 3.01 · good 31.00 · out of range Excellent
Mon 16:00 0.10 · good 2.65 · good 31.00 · out of range Excellent
Mon 17:00 0.10 · good 2.69 · good 31.00 · out of range Excellent
Mon 18:00 0.10 · good 2.67 · good 31.00 · out of range Good
Mon 19:00 0.10 · good 1.80 · good 31.00 · out of range Poor
Mon 20:00 0.10 · good 1.28 · good 31.00 · out of range Poor
Mon 21:00 0.10 · good 0.74 · good 31.00 · out of range Poor
Mon 22:00 0.10 · good 1.32 · good 31.00 · out of range Poor
Mon 23:00 0.10 · good 1.60 · good 31.00 · out of range Poor
Tue 00:00 0.10 · good 1.87 · good 30.90 · out of range Poor
Tue 01:00 0.10 · good 2.62 · good 30.90 · out of range Poor
Tue 02:00 0.10 · good 2.87 · good 30.90 · out of range Poor
Tue 03:00 0.10 · good 3.32 · good 30.80 · out of range Poor
Tue 04:00 0.10 · good 1.84 · good 30.80 · out of range Poor
Tue 05:00 0.10 · good 3.11 · good 30.70 · out of range Poor
Tue 06:00 0.12 · good 2.94 · good 30.70 · out of range Poor