MARINE REPORT / 72 HOURS

Surin Islands Snorkel Report Today

Thailand · Updated Sat 08:01 (+07) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 08:01 (+07)

Surin Islands has a usable snorkeling window around Sat 10:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 6.6/10

Sat 09:00 (+07)

Later today

Excellent · 7.4/10

Sat 12:00 (+07)

Next three days

Excellent · 7.4/10

Sat 12:00 (+07)

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

Score: 7.4/10

Best time: Sat 10:00

Main risk: Sea Temperature

Best morning signal: Sat 11:00 (Good).

Best afternoon signal: Sat 12:00 (Excellent). Peak afternoon wind is about 2.9 m/s.

Email me when it is good

Sunrise

06:16

Sunset

18:10

Water

30.5°C

Max air

28.3°C

Sky

Clear

21% cloud

Good model window in the next 72 hours

Next good model window: Sat 10:00–14:00 (44% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

✅ Excellent conditions

Main blocker: Sea temperature

Sunday

✅ Good conditions

Main blocker: Darkness

Monday

✅ Good conditions

Main blocker: Tide/current

Best available hours

The next good model window starts at Sat 10:00 and lasts until 14:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (38 hours)
  • Darkness (36 hours)
  • Sea temperature (31 hours)

Jellyfish drift risk

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

Low · 31/100

Low peak drift risk around Sat 15:00.

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: Sun 01:00

Sat 13:00, Sun 01:00, Sun 14:00, Mon 02:00, Mon 16:00

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 09:00 – Mon 09:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.7 around Sat 08:00; 12 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.

12/24 sampled hours stay at or below 0.36m (range 0.34m to 0.42m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.36 to 2.97m/s).

Tides range from -0.18m to 1.18m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
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 09:00 0.42 · high 1.83 · good 30.10 · good Good
Fri 10:00 0.42 · high 2.09 · good 30.30 · good Fair
Fri 11:00 0.42 · high 1.66 · good 30.40 · good Good
Fri 12:00 0.40 · high 1.10 · good 30.50 · out of range Good
Fri 13:00 0.40 · high 1.74 · good 30.60 · out of range Fair
Fri 14:00 0.40 · high 2.55 · good 30.60 · out of range Fair
Fri 15:00 0.40 · high 2.44 · good 30.60 · out of range Fair
Fri 16:00 0.40 · high 2.97 · good 30.60 · out of range Fair
Fri 17:00 0.40 · high 2.48 · good 30.50 · out of range Fair
Fri 18:00 0.38 · high 2.41 · good 30.50 · out of range Fair
Fri 19:00 0.38 · high 1.35 · good 30.40 · good Poor
Fri 20:00 0.38 · high 1.88 · good 30.40 · good Poor
Fri 21:00 0.36 · good 2.34 · good 30.30 · good Poor
Fri 22:00 0.36 · good 1.63 · good 30.30 · good Poor
Fri 23:00 0.36 · good 1.64 · good 30.30 · good Poor
Sat 00:00 0.36 · good 2.13 · good 30.20 · good Poor
Sat 01:00 0.36 · good 1.78 · good 30.20 · good Poor
Sat 02:00 0.36 · good 1.86 · good 30.10 · good Poor
Sat 03:00 0.34 · good 2.11 · good 30.10 · good Poor
Sat 04:00 0.36 · good 2.58 · good 30.10 · good Poor
Sat 05:00 0.36 · good 1.57 · good 30.00 · good Poor
Sat 06:00 0.36 · good 0.36 · good 30.00 · good Poor
Sat 07:00 0.36 · good 1.86 · good 30.00 · good Good
Sat 08:00 0.36 · good 1.75 · good 30.10 · good Good
Sat 09:00 0.34 · good 1.80 · good 30.20 · good Good
Sat 10:00 0.34 · good 2.52 · good 30.30 · good Good
Sat 11:00 0.34 · good 2.28 · good 30.40 · good Good
Sat 12:00 0.34 · good 1.37 · good 30.50 · out of range Excellent
Sat 13:00 0.34 · good 1.41 · good 30.60 · out of range Good
Sat 14:00 0.34 · good 1.96 · good 30.60 · out of range Good
Sat 15:00 0.34 · good 2.22 · good 30.60 · out of range Fair
Sat 16:00 0.32 · good 2.35 · good 30.50 · out of range Good
Sat 17:00 0.32 · good 1.80 · good 30.50 · out of range Good
Sat 18:00 0.32 · good 1.82 · good 30.40 · good Good
Sat 19:00 0.32 · good 1.41 · good 30.40 · good Poor
Sat 20:00 0.32 · good 2.02 · good 30.30 · good Poor
Sat 21:00 0.32 · good 1.67 · good 30.30 · good Poor
Sat 22:00 0.32 · good 0.71 · good 30.20 · good Poor
Sat 23:00 0.32 · good 2.33 · good 30.20 · good Poor
Sun 00:00 0.32 · good 1.94 · good 30.20 · good Poor
Sun 01:00 0.32 · good 1.78 · good 30.10 · good Poor
Sun 02:00 0.32 · good 2.59 · good 30.10 · good Poor
Sun 03:00 0.30 · good 3.25 · good 30.10 · good Poor
Sun 04:00 0.30 · good 2.92 · good 30.00 · good Poor
Sun 05:00 0.32 · good 0.39 · good 30.00 · good Poor
Sun 06:00 0.32 · good 0.61 · good 30.00 · good Poor
Sun 07:00 0.32 · good 0.45 · good 30.00 · good Good
Sun 08:00 0.32 · good 1.20 · good 30.10 · good Good
Sun 09:00 0.30 · good 1.57 · good 30.20 · good Good
Sun 10:00 0.30 · good 1.30 · good 30.30 · good Good
Sun 11:00 0.30 · good 0.84 · good 30.40 · good Good
Sun 12:00 0.30 · good 0.76 · good 30.50 · out of range Good
Sun 13:00 0.30 · good 1.30 · good 30.50 · out of range Good
Sun 14:00 0.30 · good 3.88 · good 30.50 · out of range Good
Sun 15:00 0.30 · good 4.64 · good 30.50 · out of range Good
Sun 16:00 0.30 · good 2.94 · good 30.50 · out of range Good
Sun 17:00 0.32 · good 2.16 · good 30.60 · out of range Good
Sun 18:00 0.30 · good 2.26 · good 30.50 · out of range Good
Sun 19:00 0.30 · good 1.40 · good 30.50 · out of range Poor
Sun 20:00 0.30 · good 0.51 · good 30.40 · good Poor
Sun 21:00 0.30 · good 2.89 · good 30.40 · good Poor
Sun 22:00 0.30 · good 2.02 · good 30.40 · good Poor
Sun 23:00 0.30 · good 2.13 · good 30.30 · good Poor
Mon 00:00 0.30 · good 0.90 · good 30.30 · good Poor
Mon 01:00 0.30 · good 2.16 · good 30.30 · good Poor
Mon 02:00 0.30 · good 1.25 · good 30.20 · good Poor
Mon 03:00 0.32 · good 3.24 · good 30.20 · good Poor
Mon 04:00 0.32 · good 2.87 · good 30.10 · good Poor
Mon 05:00 0.32 · good 3.17 · good 30.10 · good Poor
Mon 06:00 0.32 · good 1.17 · good 30.10 · good Poor
Mon 07:00 0.32 · good 1.48 · good 30.10 · good Good
Mon 08:00 0.32 · good 1.50 · good 30.10 · good Good