SnorkelForecast.com

Koh Kradan Snorkel Report Today

Thailand · Updated Tue 04:15 (+07) · Source: Snapshot

The skinny

Go in the best window Report Wed 01:12

Koh Kradan has a usable snorkeling window around Wed 10:00. The main thing to watch is sea temperature.

Score: 5.8/10

Best time: Wed 10:00

Main risk: Sea Temperature

Best morning signal: Wed 10:00 (Good).

Best afternoon signal: Wed 12:00 (Good). Peak afternoon wind is about 7.0 m/s.

Email me when it is good

Sunrise

06:15

Sunset

18:44

Water

31.0°C

Max air

29.6°C

Sky

Cloudy

78% cloud

Good window is available today

Next safe window: Wed 03:00–05:00 (18% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Wednesday

✅ good conditions

Main blocker: Waves

Thursday

✅ good conditions

Main blocker: Sea temperature

Friday

⚠️ fair conditions

Main blocker: Waves

Best available hours

Next safe window starts at Wed 03:00 until 05:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (57 hours)
  • Waves (54 hours)
  • Tide/current (43 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: Tue 20:00

Tue 20:00, Wed 08:00, Wed 21:00, Thu 23:00

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

❌ Poor

Advanced forecast data

Viewing historical data

Mon 18:00 – Thu 18:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.45 around Tue 11:00; 10 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 0.62m to 0.66m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.45 to 3.08m/s).

Tides range from -0.53m to 1.96m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
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
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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
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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Mon 18:00 0.64 · high 2.93 · good 30.50 · out of range poor
Mon 19:00 0.64 · high 0.46 · good 30.50 · out of range poor
Mon 20:00 0.64 · high 0.45 · good 30.50 · out of range poor
Mon 21:00 0.64 · high 0.85 · good 30.50 · out of range poor
Mon 22:00 0.64 · high 1.44 · good 30.50 · out of range poor
Mon 23:00 0.64 · high 1.10 · good 30.50 · out of range poor
Tue 00:00 0.64 · high 1.63 · good 30.50 · out of range fair
Tue 01:00 0.64 · high 2.12 · good 30.50 · out of range fair
Tue 02:00 0.66 · high 1.57 · good 30.50 · out of range fair
Tue 03:00 0.66 · high 0.96 · good 30.60 · out of range fair
Tue 04:00 0.66 · high 1.61 · good 30.60 · out of range fair
Tue 05:00 0.66 · high 0.68 · good 30.70 · out of range fair
Tue 06:00 0.66 · high 0.81 · good 30.70 · out of range fair
Tue 07:00 0.66 · high 2.97 · good 30.70 · out of range poor
Tue 08:00 0.64 · high 2.51 · good 30.80 · out of range poor
Tue 09:00 0.64 · high 1.75 · good 30.80 · out of range fair
Tue 10:00 0.64 · high 1.60 · good 30.80 · out of range fair
Tue 11:00 0.64 · high 1.57 · good 30.80 · out of range fair
Tue 12:00 0.64 · high 2.12 · good 30.80 · out of range poor
Tue 13:00 0.64 · high 2.01 · good 30.80 · out of range poor
Tue 14:00 0.62 · high 2.46 · good 30.70 · out of range poor
Tue 15:00 0.62 · high 2.57 · good 30.70 · out of range poor
Tue 16:00 0.62 · high 2.70 · good 30.60 · out of range poor
Tue 17:00 0.62 · high 3.08 · good 30.60 · out of range poor
Tue 18:00 0.62 · high 3.17 · good 30.60 · out of range poor
Tue 19:00 0.60 · high 2.62 · good 30.50 · out of range poor
Tue 20:00 0.60 · high 1.19 · good 30.50 · out of range poor
Tue 21:00 0.58 · high 2.07 · good 30.50 · out of range poor
Tue 22:00 0.58 · high 7.31 · high 30.50 · out of range poor
Tue 23:00 0.58 · high 4.51 · good 30.50 · out of range poor
Wed 00:00 0.58 · high 3.75 · good 30.50 · out of range fair
Wed 01:00 0.58 · high 2.41 · good 30.50 · out of range fair
Wed 02:00 0.58 · high 3.89 · good 30.50 · out of range fair
Wed 03:00 0.58 · high 4.30 · good 30.50 · out of range fair
Wed 04:00 0.58 · high 5.21 · good 30.60 · out of range poor
Wed 05:00 0.58 · high 4.58 · good 30.60 · out of range fair
Wed 06:00 0.58 · high 4.30 · good 30.60 · out of range fair
Wed 07:00 0.56 · high 5.26 · good 30.70 · out of range fair
Wed 08:00 0.56 · high 4.91 · good 30.70 · out of range poor
Wed 09:00 0.54 · high 4.05 · good 30.70 · out of range fair
Wed 10:00 0.54 · high 3.86 · good 30.70 · out of range fair
Wed 11:00 0.52 · high 3.75 · good 30.70 · out of range fair
Wed 12:00 0.52 · high 3.55 · good 30.70 · out of range poor
Wed 13:00 0.50 · high 3.40 · good 30.70 · out of range poor
Wed 14:00 0.50 · high 3.35 · good 30.70 · out of range poor
Wed 15:00 0.48 · high 3.30 · good 30.70 · out of range poor
Wed 16:00 0.48 · high 3.19 · good 30.60 · out of range poor
Wed 17:00 0.48 · high 3.22 · good 30.60 · out of range poor
Wed 18:00 0.48 · high 2.68 · good 30.60 · out of range poor
Wed 19:00 0.48 · high 1.90 · good 30.60 · out of range poor
Wed 20:00 0.46 · high 1.59 · good 30.60 · out of range poor
Wed 21:00 0.46 · high 0.79 · good 30.60 · out of range poor
Wed 22:00 0.46 · high 4.76 · good 30.60 · out of range poor
Wed 23:00 0.46 · high 0.67 · good 30.60 · out of range poor
Thu 00:00 0.46 · high 1.45 · good 30.60 · out of range fair
Thu 01:00 0.46 · high 2.55 · good 30.60 · out of range fair
Thu 02:00 0.44 · high 2.96 · good 30.70 · out of range fair
Thu 03:00 0.44 · high 2.65 · good 30.70 · out of range fair
Thu 04:00 0.44 · high 2.47 · good 30.80 · out of range fair
Thu 05:00 0.42 · high 3.82 · good 30.80 · out of range fair
Thu 06:00 0.42 · high 4.24 · good 30.80 · out of range fair
Thu 07:00 0.42 · high 4.11 · good 30.80 · out of range fair
Thu 08:00 0.44 · high 4.09 · good 30.80 · out of range fair
Thu 09:00 0.44 · high 4.61 · good 30.80 · out of range fair
Thu 10:00 0.44 · high 4.39 · good 30.80 · out of range fair
Thu 11:00 0.46 · high 3.72 · good 30.80 · out of range fair
Thu 12:00 0.46 · high 3.43 · good 30.80 · out of range poor
Thu 13:00 0.46 · high 3.24 · good 30.80 · out of range poor
Thu 14:00 0.44 · high 3.25 · good 30.80 · out of range poor
Thu 15:00 0.44 · high 3.07 · good 30.70 · out of range poor
Thu 16:00 0.44 · high 3.24 · good 30.70 · out of range poor
Thu 17:00 0.42 · high 3.34 · good 30.70 · out of range poor