SnorkelForecast.com

Koh Tao Snorkel Report Today

Thailand · Updated Tue 20:30 (+07) · Source: Snapshot

The skinny

Marginal Report Wed 06:23

Koh Tao looks marginal today. The least-bad daylight window is around Wed 13:00, but waves is limiting the forecast.

Score: 5.4/10

Best time: Wed 13:00

Main risk: Waves

Best morning signal: Wed 09:00 (Fair).

Best afternoon signal: Wed 13:00 (Fair). Peak afternoon wind is about 8.8 m/s.

Email me when it is good

Sunrise

06:11

Sunset

18:29

Water

29.7°C

Max air

29.1°C

Sky

Cloudy

95% cloud

No good model window in the next 72 hours

Use the best-available section for the least-bad times.

3-day planner Best available Show data

3-day planner

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Thursday

⚠️ Fair conditions

Main blocker: Waves

Friday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Wed 06:00: Fair (0.54) · still limited by waves, tide/current
  • Wed 05:00: Fair (0.51) · still limited by waves, tide/current
  • Wed 02:00: Fair (0.48) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (68 hours)
  • Wind (64 hours)
  • Tide/current (57 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Wed 16:00.

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: Wed 18:00

Wed 07:00, Wed 18:00, Thu 07:00, Fri 08:00

Nearby alternatives in Thailand

Surin Islands

229 km away

❌ Poor

Railay

257 km away

✅ Good

Koh Phi Phi

287 km away

⚠️ Fair

Similan Islands

290 km away

❌ Poor

Advanced forecast data

Viewing current forecast

Tue 23:00 – Fri 23:00 (+07)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.54 around Wed 13:00; 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 0.42m to 0.6m).

Wind is at or below 5.4m/s in 4/24 sampled hours (range 4.72 to 8.77m/s).

Tides range from 0.18m to 1.05m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
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
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
Poor ❌ Limited
Poor ❌ Limited
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
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
Wed 00:00 0.46 · high 7.63 · high 29.70 · good Fair
Wed 01:00 0.46 · high 6.07 · high 29.80 · good Fair
Wed 02:00 0.44 · high 6.21 · high 29.80 · good Fair
Wed 03:00 0.44 · high 6.41 · high 29.90 · good Fair
Wed 04:00 0.44 · high 6.39 · high 29.90 · good Fair
Wed 05:00 0.42 · high 5.37 · good 29.90 · good Fair
Wed 06:00 0.42 · high 5.25 · good 30.00 · good Fair
Wed 07:00 0.46 · high 4.72 · good 30.00 · good Fair
Wed 08:00 0.50 · high 5.27 · good 30.00 · good Fair
Wed 09:00 0.54 · high 7.21 · high 30.00 · good Fair
Wed 10:00 0.56 · high 8.77 · high 30.00 · good Poor
Wed 11:00 0.56 · high 8.12 · high 29.90 · good Poor
Wed 12:00 0.58 · high 7.98 · high 29.90 · good Poor
Wed 13:00 0.56 · high 8.38 · high 29.90 · good Poor
Wed 14:00 0.56 · high 8.52 · high 29.90 · good Poor
Wed 15:00 0.54 · high 7.82 · high 29.90 · good Poor
Wed 16:00 0.56 · high 7.95 · high 29.90 · good Poor
Wed 17:00 0.58 · high 8.10 · high 29.80 · good Poor
Wed 18:00 0.60 · high 6.85 · high 29.80 · good Poor
Wed 19:00 0.60 · high 6.25 · high 29.80 · good Poor
Wed 20:00 0.58 · high 7.51 · high 29.80 · good Poor
Wed 21:00 0.58 · high 7.76 · high 29.80 · good Poor
Wed 22:00 0.60 · high 8.15 · high 29.80 · good Poor
Wed 23:00 0.60 · high 7.29 · high 29.80 · good Poor
Thu 00:00 0.62 · high 6.52 · high 29.80 · good Fair
Thu 01:00 0.62 · high 7.57 · high 29.80 · good Fair
Thu 02:00 0.60 · high 6.67 · high 29.80 · good Fair
Thu 03:00 0.60 · high 7.42 · high 29.80 · good Fair
Thu 04:00 0.60 · high 6.56 · high 29.80 · good Fair
Thu 05:00 0.60 · high 5.69 · high 29.80 · good Fair
Thu 06:00 0.60 · high 6.96 · high 29.80 · good Fair
Thu 07:00 0.58 · high 8.13 · high 29.80 · good Fair
Thu 08:00 0.58 · high 7.87 · high 29.80 · good Poor
Thu 09:00 0.56 · high 8.65 · high 29.80 · good Poor
Thu 10:00 0.58 · high 6.23 · high 29.80 · good Fair
Thu 11:00 0.62 · high 6.46 · high 29.80 · good Fair
Thu 12:00 0.64 · high 7.75 · high 29.80 · good Poor
Thu 13:00 0.64 · high 7.97 · high 29.80 · good Poor
Thu 14:00 0.66 · high 8.10 · high 29.80 · good Poor
Thu 15:00 0.66 · high 8.05 · high 29.80 · good Poor
Thu 16:00 0.66 · high 7.86 · high 29.80 · good Poor
Thu 17:00 0.66 · high 8.06 · high 29.80 · good Poor
Thu 18:00 0.66 · high 8.07 · high 29.80 · good Poor
Thu 19:00 0.68 · high 8.43 · high 29.80 · good Poor
Thu 20:00 0.68 · high 8.12 · high 29.80 · good Poor
Thu 21:00 0.70 · high 8.13 · high 29.70 · good Poor
Thu 22:00 0.68 · high 7.83 · high 29.70 · good Poor
Thu 23:00 0.68 · high 7.80 · high 29.70 · good Poor
Fri 00:00 0.66 · high 6.95 · high 29.70 · good Fair
Fri 01:00 0.64 · high 7.63 · high 29.70 · good Fair
Fri 02:00 0.64 · high 6.68 · high 29.70 · good Fair
Fri 03:00 0.62 · high 7.52 · high 29.70 · good Fair
Fri 04:00 0.62 · high 8.17 · high 29.80 · good Fair
Fri 05:00 0.64 · high 5.84 · high 29.80 · good Fair
Fri 06:00 0.64 · high 5.62 · high 29.80 · good Fair
Fri 07:00 0.64 · high 7.21 · high 29.80 · good Fair
Fri 08:00 0.62 · high 8.18 · high 29.80 · good Fair
Fri 09:00 0.62 · high 7.52 · high 29.80 · good Poor
Fri 10:00 0.62 · high 6.83 · high 29.80 · good Poor
Fri 11:00 0.60 · high 7.54 · high 29.80 · good Poor
Fri 12:00 0.60 · high 7.55 · high 29.80 · good Poor
Fri 13:00 0.60 · high 7.18 · high 29.80 · good Poor
Fri 14:00 0.62 · high 7.17 · high 29.80 · good Poor
Fri 15:00 0.62 · high 7.55 · high 29.80 · good Poor
Fri 16:00 0.62 · high 7.64 · high 29.70 · good Poor
Fri 17:00 0.62 · high 8.27 · high 29.70 · good Poor
Fri 18:00 0.62 · high 8.02 · high 29.70 · good Poor
Fri 19:00 0.62 · high 8.44 · high 29.70 · good Poor