MARINE REPORT / 72 HOURS

Surin Islands Snorkel Report Today

Thailand · Updated Sun 15:56 (+07) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 15:56 (+07)

Surin Islands has a usable snorkeling window around Sun 18:00. The main thing to watch is darkness.

Right now (forecast)

Fair · 5.4/10

Sun 17:00 (+07)

Later today

Good · 5.8/10

Sun 18:00 (+07)

Next three days

Good · 6.7/10

Mon 15:00 (+07)

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

Score: 5.8/10

Best time: Sun 18:00

Main risk: Darkness

No useful morning window is showing yet.

Best afternoon signal: Sun 18:00 (Good). Peak afternoon wind is about 4.1 m/s.

Email me when it is good

Sunrise

06:16

Sunset

18:10

Water

30.6°C

Max air

27.7°C

Sky

Cloudy

100% cloud

Good model window in the next 72 hours

Next good model window: Sun 18:00 (32% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

✅ Good conditions

Main blocker: Darkness

Monday

✅ Good conditions

Main blocker: Tide/current

Tuesday

✅ Good conditions

Main blocker: Waves

Best available hours

The next good model window starts at Sun 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (42 hours)
  • Darkness (36 hours)
  • Tide/current (31 hours)

Jellyfish drift risk

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

Low · 31/100

Low peak drift risk around Mon 05:00.

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: Mon 02:00

Mon 02:00, Mon 16:00, Tue 04:00, Tue 18:00, Wed 06:00

Nearby alternatives in Thailand

Similan Islands

89 km away

✅ Good

Railay

189 km away

✅ Good

Koh Phi Phi

212 km away

✅ Good

Koh Tao

229 km away

✅ Good

Advanced forecast data

Viewing historical data

Fri 17:00 – Mon 17:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.22 around Sat 10:00; 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 1.96m to 2.18m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 7.95 to 11.52m/s).

Tides range from 0.03m to 0.99m; 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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Fri 17:00 2.04 · high 10.73 · high 29.00 · good Poor
Fri 18:00 2.18 · high 11.37 · high 29.00 · good Poor
Fri 19:00 2.14 · high 11.52 · high 29.00 · good Poor
Fri 20:00 2.14 · high 10.14 · high 29.00 · good Poor
Fri 21:00 2.12 · high 10.53 · high 29.00 · good Poor
Fri 22:00 2.12 · high 10.30 · high 29.00 · good Poor
Fri 23:00 2.10 · high 8.00 · high 28.90 · good Poor
Sat 00:00 2.10 · high 7.95 · high 28.90 · good Poor
Sat 01:00 2.10 · high 8.71 · high 28.90 · good Poor
Sat 02:00 2.08 · high 10.36 · high 28.90 · good Poor
Sat 03:00 2.08 · high 9.72 · high 28.90 · good Poor
Sat 04:00 2.06 · high 9.73 · high 28.90 · good Poor
Sat 05:00 2.04 · high 11.16 · high 28.90 · good Poor
Sat 06:00 2.02 · high 9.73 · high 28.80 · good Poor
Sat 07:00 2.00 · high 9.91 · high 28.80 · good Poor
Sat 08:00 2.00 · high 9.04 · high 28.80 · good Poor
Sat 09:00 2.00 · high 8.78 · high 28.80 · good Poor
Sat 10:00 2.00 · high 8.71 · high 28.80 · good Poor
Sat 11:00 2.02 · high 9.61 · high 28.80 · good Poor
Sat 12:00 2.02 · high 9.75 · high 28.80 · good Poor
Sat 13:00 2.04 · high 8.90 · high 28.80 · good Poor
Sat 14:00 2.02 · high 9.42 · high 28.80 · good Poor
Sat 15:00 1.98 · high 9.50 · high 28.80 · good Poor
Sat 16:00 1.96 · high 9.17 · high 28.80 · good Poor
Sat 17:00 1.94 · high 8.95 · high 28.80 · good Poor
Sat 18:00 1.94 · high 9.07 · high 28.80 · good Poor
Sat 19:00 1.60 · high 9.06 · high 28.80 · good Poor
Sat 20:00 1.62 · high 9.16 · high 28.80 · good Poor
Sat 21:00 1.62 · high 10.35 · high 28.80 · good Poor
Sat 22:00 1.64 · high 9.45 · high 28.80 · good Poor
Sat 23:00 1.66 · high 8.67 · high 28.70 · good Poor
Sun 00:00 1.68 · high 10.53 · high 28.70 · good Poor
Sun 01:00 1.70 · high 9.83 · high 28.70 · good Poor
Sun 02:00 1.70 · high 11.11 · high 28.70 · good Poor
Sun 03:00 1.72 · high 9.98 · high 28.70 · good Poor
Sun 04:00 1.72 · high 9.12 · high 28.70 · good Poor
Sun 05:00 1.76 · high 9.80 · high 28.70 · good Poor
Sun 06:00 1.78 · high 8.84 · high 28.70 · good Poor
Sun 07:00 1.82 · high 9.24 · high 28.70 · good Poor
Sun 08:00 1.80 · high 8.72 · high 28.70 · good Poor
Sun 09:00 1.78 · high 7.85 · high 28.70 · good Poor
Sun 10:00 1.76 · high 7.03 · high 28.70 · good Poor
Sun 11:00 1.72 · high 8.35 · high 28.70 · good Poor
Sun 12:00 1.70 · high 8.17 · high 28.70 · good Poor
Sun 13:00 1.66 · high 7.89 · high 28.70 · good Poor
Sun 14:00 1.66 · high 6.56 · high 28.70 · good Poor
Sun 15:00 1.64 · high 8.20 · high 28.70 · good Poor
Sun 16:00 1.64 · high 6.96 · high 28.70 · good Poor
Sun 17:00 1.62 · high 7.50 · high 28.70 · good Poor
Sun 18:00 1.52 · high 7.14 · high 28.60 · good Poor
Sun 19:00 1.52 · high 6.51 · high 28.60 · good Poor
Sun 20:00 1.50 · high 5.18 · good 28.60 · good Poor
Sun 21:00 1.48 · high 5.26 · good 28.60 · good Poor
Sun 22:00 1.36 · high 3.81 · good 28.60 · good Poor
Sun 23:00 1.34 · high 4.04 · good 28.60 · good Poor
Mon 00:00 1.34 · high 3.19 · good 28.60 · good Poor
Mon 01:00 1.32 · high 2.82 · good 28.60 · good Poor
Mon 02:00 1.30 · high 3.05 · good 28.60 · good Poor
Mon 03:00 1.30 · high 2.99 · good 28.60 · good Poor
Mon 04:00 1.28 · high 2.86 · good 28.60 · good Poor
Mon 05:00 1.28 · high 2.57 · good 28.60 · good Poor
Mon 06:00 1.26 · high 2.86 · good 28.60 · good Poor
Mon 07:00 1.26 · high 5.05 · good 28.60 · good Fair
Mon 08:00 1.26 · high 5.65 · high 28.70 · good Poor
Mon 09:00 1.24 · high 4.78 · good 28.70 · good Fair
Mon 10:00 1.24 · high 4.85 · good 28.80 · good Fair
Mon 11:00 1.22 · high 4.66 · good 28.80 · good Fair
Mon 12:00 1.20 · high 4.10 · good 28.90 · good Fair
Mon 13:00 1.18 · high 3.40 · good 28.90 · good Poor
Mon 14:00 1.16 · high 3.20 · good 28.90 · good Poor
Mon 15:00 1.16 · high 1.45 · good 29.00 · good Fair
Mon 16:00 1.14 · high 1.38 · good 29.00 · good Fair