MARINE REPORT / 72 HOURS

Railay Snorkel Report Today

Thailand · Updated Sun 18:29 (+07) · Source: Snapshot

The skinny

Poor Data updated Sun 18:29 (+07)

Railay has no good model window later today. Check the three-day outlook and official beach advisories.

Right now (forecast)

Poor · 0.0/10

Sun 19:00 (+07)

Later today

No fresh data for this period.

Next three days

Excellent · 8.1/10

Mon 18:00 (+07)

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

Score: 0.0/10

Best time: -

Main risk: Sea Temperature

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:11

Sunset

18:07

Water

31.6°C

Max air

24.9°C

Sky

Cloudy

99% cloud

Good model window in the next 72 hours

Next good model window: Mon 07:00–18:00 (50% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

❌ Poor conditions

Main blocker: Sea temperature

Monday

✅ Excellent conditions

Main blocker: Sea temperature

Tuesday

✅ Excellent conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Mon 07:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (70 hours)
  • Darkness (35 hours)

Jellyfish drift risk

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

Low · 27/100

Low peak drift risk around Mon 11:00.

warm water supports seasonal jellyfish activity; 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 17:00, Tue 05:00, Tue 18:00

Nearby alternatives in Thailand

Koh Phi Phi

31 km away

✅ Good

Koh Kradan

94 km away

✅ Good

Similan Islands

149 km away

✅ Good

Koh Lipe

177 km away

✅ Good

Advanced forecast data

Viewing historical data

Tue 19:00 – Fri 19:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.79 around Wed 09:00; 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.

24/24 sampled hours stay at or below 0.36m (range 0.04m to 0.12m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.53 to 4.07m/s).

Tides range from -0.52m to 1.4m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
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
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Tue 19:00 0.04 · good 1.30 · good 31.00 · out of range Poor
Tue 20:00 0.04 · good 1.55 · good 31.00 · out of range Poor
Tue 21:00 0.04 · good 1.10 · good 30.90 · out of range Poor
Tue 22:00 0.04 · good 2.42 · good 30.90 · out of range Poor
Tue 23:00 0.04 · good 2.62 · good 30.90 · out of range Poor
Wed 00:00 0.06 · good 2.31 · good 30.90 · out of range Poor
Wed 01:00 0.06 · good 3.76 · good 30.90 · out of range Poor
Wed 02:00 0.06 · good 0.53 · good 30.90 · out of range Poor
Wed 03:00 0.08 · good 1.31 · good 30.80 · out of range Poor
Wed 04:00 0.08 · good 0.98 · good 30.80 · out of range Poor
Wed 05:00 0.10 · good 1.94 · good 30.80 · out of range Poor
Wed 06:00 0.10 · good 1.70 · good 30.80 · out of range Poor
Wed 07:00 0.12 · good 1.47 · good 30.80 · out of range Excellent
Wed 08:00 0.12 · good 1.19 · good 30.80 · out of range Excellent
Wed 09:00 0.12 · good 0.96 · good 30.80 · out of range Excellent
Wed 10:00 0.12 · good 0.68 · good 30.80 · out of range Excellent
Wed 11:00 0.12 · good 1.71 · good 30.80 · out of range Excellent
Wed 12:00 0.10 · good 2.04 · good 30.90 · out of range Good
Wed 13:00 0.10 · good 2.64 · good 30.90 · out of range Good
Wed 14:00 0.10 · good 4.07 · good 30.90 · out of range Good
Wed 15:00 0.10 · good 3.04 · good 30.90 · out of range Good
Wed 16:00 0.10 · good 2.33 · good 30.90 · out of range Good
Wed 17:00 0.10 · good 2.02 · good 30.90 · out of range Excellent
Wed 18:00 0.10 · good 1.30 · good 30.80 · out of range Excellent
Wed 19:00 0.10 · good 1.34 · good 30.80 · out of range Poor
Wed 20:00 0.10 · good 1.36 · good 30.80 · out of range Poor
Wed 21:00 0.10 · good 0.95 · good 30.80 · out of range Poor
Wed 22:00 0.10 · good 0.35 · good 30.70 · out of range Poor
Wed 23:00 0.08 · good 0.94 · good 30.70 · out of range Poor
Thu 00:00 0.08 · good 0.43 · good 30.70 · out of range Poor
Thu 01:00 0.08 · good 0.14 · good 30.70 · out of range Poor
Thu 02:00 0.08 · good 0.29 · good 30.70 · out of range Poor
Thu 03:00 0.08 · good 1.03 · good 30.70 · out of range Poor
Thu 04:00 0.08 · good 2.05 · good 30.60 · out of range Poor
Thu 05:00 0.08 · good 0.58 · good 30.60 · out of range Poor
Thu 06:00 0.08 · good 1.77 · good 30.60 · out of range Poor
Thu 07:00 0.08 · good 1.17 · good 30.60 · out of range Excellent
Thu 08:00 0.08 · good 1.14 · good 30.60 · out of range Excellent
Thu 09:00 0.08 · good 2.13 · good 30.70 · out of range Good
Thu 10:00 0.08 · good 2.31 · good 30.70 · out of range Good
Thu 11:00 0.08 · good 2.58 · good 30.80 · out of range Good
Thu 12:00 0.08 · good 2.76 · good 30.90 · out of range Excellent
Thu 13:00 0.08 · good 2.72 · good 30.90 · out of range Good
Thu 14:00 0.08 · good 3.59 · good 30.90 · out of range Good
Thu 15:00 0.08 · good 2.98 · good 30.90 · out of range Good
Thu 16:00 0.08 · good 2.62 · good 30.90 · out of range Good
Thu 17:00 0.08 · good 2.91 · good 30.90 · out of range Good
Thu 18:00 0.08 · good 1.24 · good 31.10 · out of range Good
Thu 19:00 0.08 · good 1.45 · good 31.10 · out of range Poor
Thu 20:00 0.08 · good 1.18 · good 31.10 · out of range Poor
Thu 21:00 0.10 · good 1.04 · good 31.00 · out of range Poor
Thu 22:00 0.08 · good 1.21 · good 31.00 · out of range Poor
Thu 23:00 0.08 · good 1.56 · good 31.00 · out of range Poor
Fri 00:00 0.06 · good 1.79 · good 31.00 · out of range Poor
Fri 01:00 0.06 · good 1.60 · good 31.00 · out of range Poor
Fri 02:00 0.06 · good 1.39 · good 31.00 · out of range Poor
Fri 03:00 0.06 · good 0.64 · good 30.90 · out of range Poor
Fri 04:00 0.06 · good 0.18 · good 30.90 · out of range Poor
Fri 05:00 0.06 · good 0.90 · good 30.90 · out of range Poor
Fri 06:00 0.04 · good 1.51 · good 30.90 · out of range Poor
Fri 07:00 0.04 · good 1.19 · good 30.90 · out of range Excellent
Fri 08:00 0.04 · good 0.57 · good 31.00 · out of range Excellent
Fri 09:00 0.04 · good 0.73 · good 31.00 · out of range Excellent
Fri 10:00 0.04 · good 1.31 · good 31.10 · out of range Excellent
Fri 11:00 0.04 · good 1.56 · good 31.20 · out of range Excellent
Fri 12:00 0.04 · good 1.36 · good 31.30 · out of range Good
Fri 13:00 0.04 · good 1.92 · good 31.30 · out of range Good
Fri 14:00 0.04 · good 1.97 · good 31.30 · out of range Good
Fri 15:00 0.04 · good 1.60 · good 31.30 · out of range Good
Fri 16:00 0.04 · good 1.56 · good 31.30 · out of range Good
Fri 17:00 0.04 · good 1.52 · good 31.20 · out of range Excellent
Fri 18:00 0.06 · good 2.43 · good 31.10 · out of range Excellent