SnorkelForecast.com

Surin Islands Snorkel Report Today

Thailand · Updated Tue 03:12 (+07) · Source: Snapshot · Showing fallback/stale data

The skinny

Marginal Report Thu 17:27

Surin Islands looks marginal today. The least-bad daylight window is around Fri 08:00, but waves is limiting the forecast.

Score: 3.0/10

Best time: Fri 08:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Thu 18:00 (Poor). Peak afternoon wind is about 6.4 m/s.

Email me when it is good

Sunrise

06:17

Sunset

18:52

Water

29.5°C

Max air

27.8°C

Sky

Cloudy

98% 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

Thursday

❌ poor conditions

Main blocker: Waves

Friday

❌ poor conditions

Main blocker: Waves

Best available hours

  • Fri 01:00 — Poor (0.30) · still limited by waves, wind
  • Fri 02:00 — Poor (0.29) · still limited by waves, wind
  • Fri 00:00 — Poor (0.28) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (16 hours)
  • Tide/current (16 hours)
  • Wind (15 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: Thu 22:00

Thu 22:00

Nearby alternatives in Thailand

Similan Islands

89 km away

❌ Poor

Railay

189 km away

✅ Good

Koh Phi Phi

212 km away

⚠️ Fair

Koh Tao

229 km away

❌ Poor

Advanced forecast data

Viewing historical data

Thu 10:00 – Sun 10:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.19 around Fri 15:00; 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 1.7m to 1.9m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 23.8 to 41.8m/s).

Tides range from -0.32m to 1.67m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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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
Thu 10:00 1.90 · high 36.10 · high 29.20 · good poor
Thu 11:00 1.90 · high 36.70 · high 29.20 · good poor
Thu 12:00 1.90 · high 34.10 · high 29.20 · good poor
Thu 13:00 1.88 · high 30.10 · high 29.20 · good poor
Thu 14:00 1.84 · high 27.20 · high 29.20 · good poor
Thu 15:00 1.82 · high 31.70 · high 29.20 · good poor
Thu 16:00 1.80 · high 35.60 · high 29.20 · good poor
Thu 17:00 1.80 · high 28.50 · high 29.20 · good poor
Thu 18:00 1.78 · high 27.50 · high 29.20 · good poor
Thu 19:00 1.76 · high 28.80 · high 29.20 · good poor
Thu 20:00 1.72 · high 41.80 · high 29.20 · good poor
Thu 21:00 1.70 · high 38.10 · high 29.20 · good poor
Thu 22:00 1.70 · high 29.50 · high 29.20 · good poor
Thu 23:00 1.70 · high 23.80 · high 29.20 · good poor
Fri 00:00 1.70 · high 26.30 · high 29.20 · good poor
Fri 01:00 1.72 · high 28.20 · high 29.20 · good poor
Fri 02:00 1.72 · high 33.60 · high 29.20 · good poor
Fri 03:00 1.74 · high 33.20 · high 29.20 · good poor
Fri 04:00 1.74 · high 35.60 · high 29.20 · good poor
Fri 05:00 1.74 · high 32.20 · high 29.20 · good poor
Fri 06:00 1.74 · high 33.10 · high 29.20 · good poor
Fri 07:00 1.72 · high 34.20 · high 29.20 · good poor
Fri 08:00 1.72 · high 36.60 · high 29.20 · good poor
Fri 09:00 1.70 · high 35.20 · high 29.20 · good poor
Fri 10:00 1.48 · high 31.50 · high 29.30 · good poor
Fri 11:00 1.48 · high 25.00 · high 29.30 · good poor
Fri 12:00 1.46 · high 27.60 · high 29.30 · good poor
Fri 13:00 1.46 · high 29.80 · high 29.30 · good poor
Fri 14:00 1.46 · high 29.90 · high 29.30 · good poor
Fri 15:00 1.46 · high 28.90 · high 29.30 · good poor
Fri 16:00 1.46 · high 26.70 · high 29.20 · good poor
Fri 17:00 1.44 · high 26.40 · high 29.20 · good poor
Fri 18:00 1.44 · high 26.80 · high 29.20 · good poor
Fri 19:00 1.44 · high 27.80 · high 29.20 · good poor
Fri 20:00 1.42 · high 27.70 · high 29.20 · good poor
Fri 21:00 1.42 · high 27.50 · high 29.20 · good poor
Fri 22:00 1.42 · high 28.70 · high 29.20 · good poor
Fri 23:00 1.40 · high 30.40 · high 29.20 · good poor
Sat 00:00 1.40 · high 22.70 · high 29.20 · good poor
Sat 01:00 1.40 · high 21.30 · high 29.20 · good poor
Sat 02:00 1.38 · high 21.30 · high 29.20 · good poor
Sat 03:00 1.38 · high 24.30 · high 29.20 · good poor
Sat 04:00 1.38 · high 23.70 · high 29.30 · good poor
Sat 05:00 1.38 · high 27.50 · high 29.30 · good poor
Sat 06:00 1.38 · high 28.80 · high 29.30 · good poor
Sat 07:00 1.38 · high 29.30 · high 29.30 · good poor
Sat 08:00 1.40 · high 32.30 · high 29.30 · good poor
Sat 09:00 1.40 · high 26.50 · high 29.30 · good poor
Sat 10:00 1.40 · high 28.30 · high 29.30 · good poor
Sat 11:00 1.38 · high 27.50 · high 29.30 · good poor
Sat 12:00 1.38 · high 27.10 · high 29.30 · good poor
Sat 13:00 1.38 · high 26.20 · high 29.30 · good poor
Sat 14:00 1.40 · high 26.00 · high 29.30 · good poor
Sat 15:00 1.40 · high 28.30 · high 29.30 · good poor
Sat 16:00 1.38 · high 27.40 · high 29.30 · good poor
Sat 17:00 1.36 · high 21.10 · high 29.30 · good poor
Sat 18:00 1.34 · high 16.00 · high 29.30 · good poor
Sat 19:00 1.34 · high 21.90 · high 29.30 · good poor
Sat 20:00 1.32 · high 24.30 · high 29.30 · good poor
Sat 21:00 1.32 · high 26.30 · high 29.20 · good poor
Sat 22:00 1.34 · high 27.10 · high 29.20 · good poor
Sat 23:00 1.34 · high 25.60 · high 29.20 · good poor
Sun 00:00 1.36 · high 23.40 · high 29.20 · good poor
Sun 01:00 1.36 · high 24.30 · high 29.20 · good poor
Sun 02:00 1.36 · high 25.60 · high 29.30 · good poor
Sun 03:00 1.36 · high 24.70 · high 29.30 · good poor
Sun 04:00 1.36 · high 22.70 · high 29.30 · good poor
Sun 05:00 1.34 · high 22.30 · high 29.30 · good poor
Sun 06:00 1.34 · high 26.30 · high 29.30 · good poor
Sun 07:00 1.34 · high 27.90 · high 29.30 · good poor
Sun 08:00 1.34 · high 22.50 · high 29.30 · good poor
Sun 09:00 1.34 · high 25.60 · high 29.30 · good poor