SnorkelForecast.com

Surin Islands Snorkel Report Today

Thailand · Updated Tue 03:12 (+07) · Source: Snapshot

The skinny

Marginal Report Tue 22:06

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

Score: 3.8/10

Best time: Wed 09:00

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:17

Sunset

18:52

Water

29.6°C

Max air

27.7°C

Sky

Cloudy

73% cloud

No safe 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

Tuesday

❌ poor conditions

Main blocker: Waves

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

❌ poor conditions

Main blocker: Waves

Best available hours

  • Wed 02:00 — Fair (0.38) · still limited by waves, tide/current
  • Wed 03:00 — Fair (0.37) · still limited by waves, wind
  • Wed 01:00 — Fair (0.36) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (59 hours)
  • Tide/current (59 hours)
  • Wind (36 hours)

Jellyfish drift risk

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

Low · 34/100

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 09:00, Thu 22:00

Nearby alternatives in Thailand

Similan Islands

89 km away

❌ Poor

Railay

189 km away

✅ Good

Koh Phi Phi

212 km away

✅ Good

Koh Tao

229 km away

✅ Good

Advanced forecast data

Viewing historical data

Tue 15:00 – Fri 15:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.33 around Wed 13:00; 0 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 1.3m to 1.7m).

Wind is at or below 5.4m/s in 1/24 sampled hours (range 5.33 to 9.39m/s).

Tides range from -0.65m to 2.02m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
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fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
fair ⚠️ Fair
poor ❌ Limited
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fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
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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
Tue 15:00 1.70 · high 7.41 · high 29.00 · good poor
Tue 16:00 1.68 · high 7.94 · high 29.00 · good poor
Tue 17:00 1.68 · high 8.52 · high 29.00 · good poor
Tue 18:00 1.66 · high 7.36 · high 29.00 · good poor
Tue 19:00 1.66 · high 8.50 · high 29.00 · good poor
Tue 20:00 1.68 · high 7.29 · high 29.00 · good poor
Tue 21:00 1.68 · high 7.50 · high 28.90 · good poor
Tue 22:00 1.66 · high 7.66 · high 28.90 · good poor
Tue 23:00 1.64 · high 7.43 · high 28.90 · good poor
Wed 00:00 1.62 · high 7.56 · high 28.90 · good poor
Wed 01:00 1.64 · high 9.39 · high 28.90 · good poor
Wed 02:00 1.64 · high 8.22 · high 29.00 · good poor
Wed 03:00 1.66 · high 8.24 · high 29.00 · good poor
Wed 04:00 1.66 · high 8.25 · high 29.00 · good poor
Wed 05:00 1.64 · high 6.18 · high 29.00 · good poor
Wed 06:00 1.36 · high 6.10 · high 29.20 · good poor
Wed 07:00 1.36 · high 6.25 · high 29.20 · good poor
Wed 08:00 1.38 · high 7.09 · high 29.20 · good poor
Wed 09:00 1.38 · high 7.47 · high 29.20 · good poor
Wed 10:00 1.36 · high 5.64 · high 29.20 · good poor
Wed 11:00 1.36 · high 5.73 · high 29.20 · good poor
Wed 12:00 1.34 · high 5.86 · high 29.20 · good poor
Wed 13:00 1.32 · high 5.97 · high 29.20 · good poor
Wed 14:00 1.30 · high 5.33 · good 29.20 · good poor
Wed 15:00 1.28 · high 5.23 · good 29.10 · good poor
Wed 16:00 1.26 · high 4.84 · good 29.10 · good poor
Wed 17:00 1.26 · high 4.55 · good 29.10 · good poor
Wed 18:00 1.24 · high 4.40 · good 29.10 · good poor
Wed 19:00 1.22 · high 4.18 · good 29.10 · good poor
Wed 20:00 1.20 · high 4.92 · good 29.10 · good poor
Wed 21:00 1.18 · high 5.18 · good 29.10 · good poor
Wed 22:00 1.18 · high 5.21 · good 29.10 · good poor
Wed 23:00 1.16 · high 5.03 · good 29.10 · good poor
Thu 00:00 1.16 · high 3.91 · good 29.10 · good poor
Thu 01:00 1.16 · high 7.67 · high 29.20 · good poor
Thu 02:00 1.16 · high 6.52 · high 29.20 · good poor
Thu 03:00 1.16 · high 5.21 · good 29.20 · good poor
Thu 04:00 1.16 · high 4.92 · good 29.30 · good poor
Thu 05:00 1.14 · high 4.83 · good 29.30 · good fair
Thu 06:00 1.14 · high 4.99 · good 29.30 · good fair
Thu 07:00 1.14 · high 6.23 · high 29.30 · good poor
Thu 08:00 1.12 · high 4.78 · good 29.30 · good fair
Thu 09:00 1.12 · high 4.65 · good 29.30 · good poor
Thu 10:00 1.12 · high 5.73 · high 29.30 · good poor
Thu 11:00 1.12 · high 4.86 · good 29.20 · good poor
Thu 12:00 1.12 · high 3.89 · good 29.20 · good poor
Thu 13:00 1.12 · high 4.34 · good 29.20 · good poor
Thu 14:00 1.10 · high 4.41 · good 29.20 · good poor
Thu 15:00 1.10 · high 4.99 · good 29.20 · good poor
Thu 16:00 1.08 · high 4.78 · good 29.20 · good poor
Thu 17:00 1.08 · high 4.67 · good 29.10 · good poor
Thu 18:00 1.06 · high 4.33 · good 29.10 · good poor
Thu 19:00 1.06 · high 4.73 · good 29.10 · good poor
Thu 20:00 1.04 · high 4.81 · good 29.10 · good poor
Thu 21:00 1.04 · high 4.85 · good 29.10 · good poor
Thu 22:00 1.04 · high 4.71 · good 29.10 · good poor
Thu 23:00 1.04 · high 5.55 · high 29.10 · good poor
Fri 00:00 1.04 · high 5.17 · good 29.10 · good poor
Fri 01:00 1.04 · high 4.71 · good 29.10 · good poor
Fri 02:00 1.04 · high 4.18 · good 29.20 · good poor
Fri 03:00 1.04 · high 4.49 · good 29.20 · good poor
Fri 04:00 1.04 · high 3.13 · good 29.20 · good poor
Fri 05:00 1.04 · high 5.02 · good 29.20 · good poor
Fri 06:00 1.04 · high 4.21 · good 29.20 · good poor
Fri 07:00 1.04 · high 4.04 · good 29.20 · good fair
Fri 08:00 1.02 · high 4.72 · good 29.20 · good fair
Fri 09:00 1.02 · high 8.14 · high 29.20 · good poor
Fri 10:00 1.02 · high 5.08 · good 29.20 · good poor
Fri 11:00 1.02 · high 5.54 · high 29.20 · good poor
Fri 12:00 1.02 · high 5.61 · high 29.20 · good poor
Fri 13:00 1.02 · high 5.48 · high 29.20 · good poor
Fri 14:00 1.02 · high 5.14 · good 29.20 · good poor