Koh Tao Snorkel Report Today

Thailand · Updated Tue 21:53 (+07) · Source: Snapshot

The skinny

Marginal Data updated Tue 21:53 (+07)

Koh Tao looks marginal today. The least-bad daylight window is around Wed 09:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Wed 02:00 (+07)

Later today

Fair · 4.4/10

Wed 09:00 (+07)

Next three days

Fair · 4.4/10

Thu 11:00 (+07)

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

Score: 4.4/10

Best time: Wed 09:00

Main risk: Waves

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

Best afternoon signal: Wed 13:00 (Fair). Peak afternoon wind is about 8.1 m/s.

Email me when it is good

Sunrise

06:09

Sunset

18:16

Water

29.7°C

Max air

27.1°C

Sky

Cloudy

100% 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

❌ Poor conditions

Main blocker: Waves

Best available hours

  • Thu 11:00: Fair (0.44) · still limited by waves, tide/current
  • Wed 09:00: Fair (0.44) · still limited by waves, wind
  • Wed 10:00: Fair (0.43) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (66 hours)
  • Tide/current (66 hours)
  • Wind (65 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Wed 17:00.

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

Thu 21:00

Nearby alternatives in Thailand

Surin Islands

229 km away

❌ Poor

Railay

257 km away

✅ Good

Koh Phi Phi

287 km away

✅ Good

Similan Islands

290 km away

❌ Poor

Advanced forecast data

Viewing historical data

Sat 02:00 – Tue 02:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.48 around Sat 18:00; 9 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 0.4m to 0.66m).

Wind is at or below 5.4m/s in 1/24 sampled hours (range 4.62 to 11.75m/s).

Tides range from 0.12m to 1.08m; 1 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
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
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 02:00 0.60 · high 6.61 · high 29.70 · good Poor
Sat 03:00 0.62 · high 6.23 · high 29.70 · good Poor
Sat 04:00 0.62 · high 5.76 · high 29.70 · good Poor
Sat 05:00 0.62 · high 7.24 · high 29.70 · good Poor
Sat 06:00 0.64 · high 8.71 · high 29.70 · good Poor
Sat 07:00 0.64 · high 6.71 · high 29.70 · good Poor
Sat 08:00 0.60 · high 6.90 · high 29.70 · good Poor
Sat 09:00 0.58 · high 7.00 · high 29.70 · good Fair
Sat 10:00 0.54 · high 6.08 · high 29.70 · good Fair
Sat 11:00 0.52 · high 6.26 · high 29.70 · good Fair
Sat 12:00 0.50 · high 5.78 · high 29.70 · good Fair
Sat 13:00 0.48 · high 5.87 · high 29.70 · good Fair
Sat 14:00 0.52 · high 6.50 · high 29.70 · good Fair
Sat 15:00 0.58 · high 6.00 · high 29.70 · good Fair
Sat 16:00 0.62 · high 4.62 · good 29.70 · good Fair
Sat 17:00 0.64 · high 11.75 · high 29.60 · good Poor
Sat 18:00 0.40 · high 7.05 · high 29.70 · good Fair
Sat 19:00 0.42 · high 8.19 · high 29.70 · good Poor
Sat 20:00 0.50 · high 8.38 · high 29.70 · good Poor
Sat 21:00 0.58 · high 7.65 · high 29.70 · good Poor
Sat 22:00 0.66 · high 7.38 · high 29.70 · good Poor
Sat 23:00 0.66 · high 7.69 · high 29.70 · good Poor
Sun 00:00 0.66 · high 7.32 · high 29.70 · good Poor
Sun 01:00 0.66 · high 9.19 · high 29.70 · good Poor
Sun 02:00 0.64 · high 8.72 · high 29.70 · good Poor
Sun 03:00 0.66 · high 7.43 · high 29.70 · good Poor
Sun 04:00 0.66 · high 8.61 · high 29.70 · good Poor
Sun 05:00 0.68 · high 9.32 · high 29.70 · good Poor
Sun 06:00 0.70 · high 7.36 · high 29.70 · good Poor
Sun 07:00 0.72 · high 7.68 · high 29.70 · good Poor
Sun 08:00 0.68 · high 8.12 · high 29.70 · good Poor
Sun 09:00 0.62 · high 7.39 · high 29.70 · good Fair
Sun 10:00 0.58 · high 7.55 · high 29.70 · good Fair
Sun 11:00 0.58 · high 7.74 · high 29.70 · good Fair
Sun 12:00 0.58 · high 6.67 · high 29.80 · good Poor
Sun 13:00 0.58 · high 6.04 · high 29.80 · good Fair
Sun 14:00 0.56 · high 6.33 · high 29.80 · good Fair
Sun 15:00 0.56 · high 5.99 · high 29.80 · good Fair
Sun 16:00 0.54 · high 7.26 · high 29.80 · good Poor
Sun 17:00 0.60 · high 6.19 · high 29.70 · good Poor
Sun 18:00 0.70 · high 9.61 · high 29.80 · good Poor
Sun 19:00 0.72 · high 8.05 · high 29.80 · good Poor
Sun 20:00 0.72 · high 6.88 · high 29.80 · good Poor
Sun 21:00 0.70 · high 7.87 · high 29.80 · good Poor
Sun 22:00 0.70 · high 7.64 · high 29.80 · good Poor
Sun 23:00 0.70 · high 8.29 · high 29.70 · good Poor
Mon 00:00 0.72 · high 7.63 · high 29.70 · good Poor
Mon 01:00 0.72 · high 7.59 · high 29.70 · good Poor
Mon 02:00 0.70 · high 7.69 · high 29.70 · good Poor
Mon 03:00 0.60 · high 7.69 · high 29.70 · good Poor
Mon 04:00 0.58 · high 7.55 · high 29.70 · good Poor
Mon 05:00 0.58 · high 8.00 · high 29.70 · good Poor
Mon 06:00 0.58 · high 6.69 · high 29.70 · good Poor
Mon 07:00 0.58 · high 7.38 · high 29.70 · good Fair
Mon 08:00 0.56 · high 7.64 · high 29.70 · good Fair
Mon 09:00 0.54 · high 7.20 · high 29.70 · good Fair
Mon 10:00 0.52 · high 7.28 · high 29.70 · good Fair
Mon 11:00 0.50 · high 6.36 · high 29.70 · good Fair
Mon 12:00 0.50 · high 6.44 · high 29.80 · good Fair
Mon 13:00 0.48 · high 6.10 · high 29.80 · good Fair
Mon 14:00 0.50 · high 5.66 · high 29.80 · good Fair
Mon 15:00 0.50 · high 7.81 · high 29.80 · good Poor
Mon 16:00 0.52 · high 5.95 · high 29.80 · good Fair
Mon 17:00 0.56 · high 7.52 · high 29.70 · good Poor
Mon 18:00 0.56 · high 7.00 · high 29.70 · good Fair
Mon 19:00 0.58 · high 7.48 · high 29.70 · good Poor
Mon 20:00 0.58 · high 7.21 · high 29.70 · good Poor
Mon 21:00 0.56 · high 6.29 · high 29.70 · good Poor
Mon 22:00 0.56 · high 7.27 · high 29.70 · good Poor
Mon 23:00 0.56 · high 6.49 · high 29.70 · good Poor
Tue 00:00 0.58 · high 7.22 · high 29.70 · good Poor
Tue 01:00 0.58 · high 8.28 · high 29.70 · good Poor