MARINE REPORT / 72 HOURS

Surin Islands Snorkel Report Today

Thailand · Updated Sat 11:09 (+07) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 11:09 (+07)

Surin Islands has a usable snorkeling window around Sat 18:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 6.1/10

Sat 14:00 (+07)

Later today

Good · 6.1/10

Sat 18:00 (+07)

Next three days

Good · 6.7/10

Sun 13:00 (+07)

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

Score: 6.1/10

Best time: Sat 18:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Sat 18:00 (Good). Peak afternoon wind is about 2.9 m/s.

Email me when it is good

Sunrise

06:16

Sunset

18:10

Water

30.8°C

Max air

28.5°C

Sky

Cloudy

94% cloud

Good model window in the next 72 hours

Next good model window: Sat 18:00 (41% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

✅ Good 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 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (39 hours)
  • Darkness (36 hours)
  • Sea temperature (26 hours)

Jellyfish drift risk

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

Low · 31/100

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: Sun 01:00

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

Sun 14:00 – Wed 14:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.6 around Mon 11:00; 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.

0/24 sampled hours stay at or below 0.36m (range 0.38m to 0.46m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.3 to 3.86m/s).

Tides range from -0.69m to 1.82m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Fair ⚠️ Fair
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
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
Sun 14:00 0.38 · high 3.86 · good 30.10 · good Fair
Sun 15:00 0.38 · high 3.26 · good 30.10 · good Fair
Sun 16:00 0.38 · high 3.80 · good 30.00 · good Fair
Sun 17:00 0.38 · high 2.80 · good 30.00 · good Fair
Sun 18:00 0.38 · high 2.91 · good 30.10 · good Fair
Sun 19:00 0.38 · high 2.66 · good 30.10 · good Poor
Sun 20:00 0.38 · high 2.55 · good 30.00 · good Poor
Sun 21:00 0.38 · high 2.70 · good 30.00 · good Poor
Sun 22:00 0.38 · high 2.72 · good 30.00 · good Poor
Sun 23:00 0.38 · high 1.19 · good 29.90 · good Poor
Mon 00:00 0.38 · high 2.42 · good 29.90 · good Poor
Mon 01:00 0.38 · high 0.30 · good 29.90 · good Poor
Mon 02:00 0.38 · high 2.62 · good 29.80 · good Poor
Mon 03:00 0.38 · high 2.48 · good 29.80 · good Poor
Mon 04:00 0.38 · high 1.64 · good 29.80 · good Poor
Mon 05:00 0.38 · high 2.55 · good 29.70 · good Poor
Mon 06:00 0.40 · high 1.34 · good 29.70 · good Poor
Mon 07:00 0.42 · high 1.11 · good 29.70 · good Fair
Mon 08:00 0.42 · high 1.90 · good 29.80 · good Fair
Mon 09:00 0.42 · high 3.26 · good 29.80 · good Fair
Mon 10:00 0.42 · high 2.66 · good 29.90 · good Fair
Mon 11:00 0.44 · high 2.49 · good 30.00 · good Good
Mon 12:00 0.44 · high 2.06 · good 30.10 · good Fair
Mon 13:00 0.46 · high 2.25 · good 30.10 · good Fair
Mon 14:00 0.46 · high 2.40 · good 30.10 · good Fair
Mon 15:00 0.48 · high 2.62 · good 30.10 · good Fair
Mon 16:00 0.48 · high 3.28 · good 30.10 · good Fair
Mon 17:00 0.48 · high 2.23 · good 30.10 · good Fair
Mon 18:00 0.46 · high 2.33 · good 30.10 · good Fair
Mon 19:00 0.46 · high 2.15 · good 30.00 · good Poor
Mon 20:00 0.46 · high 1.06 · good 30.00 · good Poor
Mon 21:00 0.48 · high 0.05 · good 30.00 · good Poor
Mon 22:00 0.48 · high 1.23 · good 30.00 · good Poor
Mon 23:00 0.48 · high 2.45 · good 29.90 · good Poor
Tue 00:00 0.42 · high 2.00 · good 29.90 · good Poor
Tue 01:00 0.42 · high 2.27 · good 29.90 · good Poor
Tue 02:00 0.42 · high 1.30 · good 29.80 · good Poor
Tue 03:00 0.42 · high 1.20 · good 29.80 · good Poor
Tue 04:00 0.42 · high 2.48 · good 29.80 · good Poor
Tue 05:00 0.42 · high 1.82 · good 29.70 · good Poor
Tue 06:00 0.42 · high 1.38 · good 29.70 · good Poor
Tue 07:00 0.42 · high 1.55 · good 29.70 · good Fair
Tue 08:00 0.42 · high 2.43 · good 29.80 · good Fair
Tue 09:00 0.44 · high 2.67 · good 29.90 · good Good
Tue 10:00 0.44 · high 2.82 · good 30.00 · good Fair
Tue 11:00 0.44 · high 1.95 · good 30.10 · good Fair
Tue 12:00 0.44 · high 1.55 · good 30.20 · good Fair
Tue 13:00 0.44 · high 0.35 · good 30.20 · good Good
Tue 14:00 0.44 · high 2.21 · good 30.30 · good Fair
Tue 15:00 0.44 · high 1.69 · good 30.30 · good Fair
Tue 16:00 0.44 · high 2.15 · good 30.20 · good Fair
Tue 17:00 0.44 · high 1.32 · good 30.20 · good Fair
Tue 18:00 0.46 · high 1.19 · good 30.20 · good Fair
Tue 19:00 0.46 · high 1.82 · good 30.20 · good Poor
Tue 20:00 0.46 · high 1.45 · good 30.10 · good Poor
Tue 21:00 0.46 · high 2.78 · good 30.10 · good Poor
Tue 22:00 0.46 · high 2.46 · good 30.10 · good Poor
Tue 23:00 0.46 · high 1.66 · good 30.00 · good Poor
Wed 00:00 0.46 · high 1.39 · good 30.00 · good Poor
Wed 01:00 0.46 · high 2.15 · good 29.90 · good Poor
Wed 02:00 0.46 · high 0.73 · good 29.90 · good Poor
Wed 03:00 0.44 · high 1.00 · good 29.90 · good Poor
Wed 04:00 0.44 · high 0.63 · good 29.80 · good Poor
Wed 05:00 0.44 · high 1.25 · good 29.80 · good Poor
Wed 06:00 0.46 · high 1.96 · good 29.80 · good Poor
Wed 07:00 0.46 · high 0.30 · good 29.80 · good Fair
Wed 08:00 0.46 · high 1.23 · good 29.90 · good Fair
Wed 09:00 0.44 · high 1.72 · good 30.00 · good Fair
Wed 10:00 0.44 · high 2.40 · good 30.10 · good Fair
Wed 11:00 0.44 · high 1.15 · good 30.20 · good Good
Wed 12:00 0.44 · high 0.30 · good 30.30 · good Good
Wed 13:00 0.44 · high 0.60 · good 30.40 · good Good