SnorkelForecast.com

Railay Snorkel Report Today

Thailand · Updated Sat 05:03 (+07) · Source: Snapshot

The skinny

Go in the best window Report Sun 03:48

Railay has a usable snorkeling window around Sun 07:00. The main thing to watch is sea temperature.

Score: 7.4/10

Best time: Sun 07:00

Main risk: Sea Temperature

Best morning signal: Sun 11:00 (Excellent).

Best afternoon signal: Sun 12:00 (Excellent). Peak afternoon wind is about 4.7 m/s.

Email me when it is good

Sunrise

06:14

Sunset

18:46

Water

30.9°C

Max air

31.3°C

Sky

Partly cloudy

41% cloud

Good window is available today

Next safe window: Sun 00:00–11:00 (52% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Sunday

✅ excellent conditions

Main blocker: Sea temperature

Monday

✅ excellent conditions

Main blocker: Sea temperature

Tuesday

✅ good conditions

Main blocker: Sea temperature

Best available hours

Next safe window starts at Sun 00:00 until 11:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (56 hours)
  • Darkness (27 hours)

Jellyfish drift risk

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

Low · 27/100

Low peak drift risk around Sun 05:00.

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: Sun 19:00

Sun 06:00, Sun 19:00, Mon 07:00, Mon 20:00

Nearby alternatives in Thailand

Koh Phi Phi

31 km away

✅ Good

Koh Kradan

94 km away

✅ Good

Similan Islands

149 km away

❌ Poor

Koh Lipe

177 km away

✅ Good

Advanced forecast data

Viewing live forecast

Sat 20:00 – Tue 20:00 (+07)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.74 around Sun 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.

24/24 sampled hours stay at or below 0.36m (range 0.14m to 0.32m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.45 to 4.72m/s).

Tides range from -0.5m to 1.67m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
good 🌟 Good
excellent ✅ Excellent
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
good 🌟 Good
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
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
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
Sat 21:00 0.20 · good 2.02 · good 30.90 · out of range poor
Sat 22:00 0.20 · good 1.82 · good 30.90 · out of range poor
Sat 23:00 0.20 · good 1.84 · good 30.90 · out of range poor
Sun 00:00 0.20 · good 1.45 · good 30.90 · out of range excellent
Sun 01:00 0.20 · good 1.90 · good 30.90 · out of range excellent
Sun 02:00 0.18 · good 2.64 · good 31.00 · out of range excellent
Sun 03:00 0.18 · good 2.99 · good 31.00 · out of range good
Sun 04:00 0.16 · good 2.98 · good 31.10 · out of range excellent
Sun 05:00 0.16 · good 3.30 · good 31.10 · out of range excellent
Sun 06:00 0.14 · good 3.49 · good 31.20 · out of range good
Sun 07:00 0.16 · good 3.98 · good 31.20 · out of range good
Sun 08:00 0.20 · good 4.12 · good 31.20 · out of range good
Sun 09:00 0.22 · good 4.27 · good 31.20 · out of range good
Sun 10:00 0.26 · good 4.72 · good 31.20 · out of range good
Sun 11:00 0.28 · good 4.62 · good 31.20 · out of range good
Sun 12:00 0.32 · good 4.22 · good 31.20 · out of range poor
Sun 13:00 0.30 · good 3.83 · good 31.20 · out of range poor
Sun 14:00 0.28 · good 3.12 · good 31.10 · out of range poor
Sun 15:00 0.26 · good 2.52 · good 31.10 · out of range poor
Sun 16:00 0.24 · good 2.42 · good 31.10 · out of range poor
Sun 17:00 0.22 · good 2.04 · good 31.00 · out of range poor
Sun 18:00 0.20 · good 1.76 · good 31.00 · out of range poor
Sun 19:00 0.20 · good 1.93 · good 31.00 · out of range poor
Sun 20:00 0.18 · good 1.65 · good 31.00 · out of range poor
Sun 21:00 0.18 · good 1.30 · good 31.00 · out of range poor
Sun 22:00 0.16 · good 1.49 · good 30.90 · out of range poor
Sun 23:00 0.16 · good 1.25 · good 30.90 · out of range poor
Mon 00:00 0.14 · good 1.24 · good 30.90 · out of range good
Mon 01:00 0.14 · good 1.19 · good 30.90 · out of range excellent
Mon 02:00 0.12 · good 1.84 · good 31.00 · out of range excellent
Mon 03:00 0.12 · good 2.58 · good 31.00 · out of range excellent
Mon 04:00 0.12 · good 2.91 · good 31.10 · out of range excellent
Mon 05:00 0.12 · good 2.98 · good 31.10 · out of range excellent
Mon 06:00 0.12 · good 3.22 · good 31.20 · out of range excellent
Mon 07:00 0.14 · good 3.43 · good 31.20 · out of range excellent
Mon 08:00 0.16 · good 4.14 · good 31.20 · out of range excellent
Mon 09:00 0.18 · good 4.34 · good 31.20 · out of range good
Mon 10:00 0.20 · good 3.73 · good 31.20 · out of range good
Mon 11:00 0.20 · good 2.75 · good 31.20 · out of range good
Mon 12:00 0.22 · good 2.36 · good 31.20 · out of range poor
Mon 13:00 0.22 · good 2.70 · good 31.20 · out of range poor
Mon 14:00 0.22 · good 2.07 · good 31.10 · out of range poor
Mon 15:00 0.22 · good 2.86 · good 31.10 · out of range poor
Mon 16:00 0.22 · good 2.76 · good 31.10 · out of range poor
Mon 17:00 0.24 · good 2.13 · good 31.10 · out of range poor
Mon 18:00 0.24 · good 2.37 · good 31.10 · out of range poor
Mon 19:00 0.24 · good 2.55 · good 31.10 · out of range poor
Mon 20:00 0.26 · good 2.76 · good 31.00 · out of range poor
Mon 21:00 0.26 · good 1.88 · good 31.00 · out of range poor
Mon 22:00 0.24 · good 2.42 · good 31.00 · out of range poor
Mon 23:00 0.24 · good 2.71 · good 31.00 · out of range poor
Tue 00:00 0.22 · good 3.28 · good 31.00 · out of range good
Tue 01:00 0.20 · good 2.72 · good 31.00 · out of range good
Tue 02:00 0.20 · good 2.30 · good 31.10 · out of range good
Tue 03:00 0.18 · good 3.46 · good 31.10 · out of range good
Tue 04:00 0.18 · good 3.19 · good 31.20 · out of range good