SnorkelForecast.com

Railay Snorkel Report Today

Thailand · Updated Tue 04:15 (+07) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Thu 05:20

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

Score: 7.6/10

Best time: Thu 07:00

Main risk: Sea Temperature

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

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

Email me when it is good

Sunrise

06:15

Sunset

18:46

Water

30.9°C

Max air

29.7°C

Sky

Cloudy

79% cloud

Good window is available today

Next safe window: Thu 00:00–11:00 (55% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Thursday

✅ excellent conditions

Main blocker: Sea temperature

Friday

✅ excellent conditions

Main blocker: Sea temperature

Best available hours

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

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (29 hours)
  • Darkness (13 hours)
  • Tide/current (2 hours)

Jellyfish drift risk

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

Low · 29/100

Low peak drift risk around Thu 19:00.

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: Thu 23:00

Thu 10:00, Thu 23:00

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 historical data

Fri 22:00 – Mon 22:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.47 around Sat 09:00; 2 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 0.2m to 0.28m).

Wind is at or below 5.4m/s in 4/24 sampled hours (range 2.8 to 19.9m/s).

Tides range from -0.13m to 1.48m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
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poor ❌ Limited
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fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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poor ❌ Limited
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
Fri 22:00 0.22 · good 3.10 · good 31.00 · out of range poor
Fri 23:00 0.22 · good 3.10 · good 30.90 · out of range poor
Sat 00:00 0.22 · good 9.80 · high 30.90 · out of range poor
Sat 01:00 0.22 · good 5.50 · high 30.90 · out of range poor
Sat 02:00 0.20 · good 2.80 · good 31.00 · out of range fair
Sat 03:00 0.20 · good 3.40 · good 31.00 · out of range fair
Sat 04:00 0.20 · good 8.20 · high 31.00 · out of range poor
Sat 05:00 0.20 · good 12.50 · high 31.10 · out of range poor
Sat 06:00 0.20 · good 19.90 · high 31.10 · out of range poor
Sat 07:00 0.20 · good 14.40 · high 31.10 · out of range poor
Sat 08:00 0.20 · good 12.60 · high 31.10 · out of range poor
Sat 09:00 0.20 · good 13.10 · high 31.10 · out of range poor
Sat 10:00 0.22 · good 14.30 · high 31.10 · out of range poor
Sat 11:00 0.24 · good 13.10 · high 31.10 · out of range poor
Sat 12:00 0.26 · good 10.50 · high 31.10 · out of range poor
Sat 13:00 0.26 · good 10.70 · high 31.10 · out of range poor
Sat 14:00 0.28 · good 10.00 · high 31.10 · out of range poor
Sat 15:00 0.28 · good 11.80 · high 31.10 · out of range poor
Sat 16:00 0.28 · good 9.60 · high 31.00 · out of range poor
Sat 17:00 0.26 · good 9.50 · high 31.00 · out of range poor
Sat 18:00 0.26 · good 7.90 · high 31.00 · out of range poor
Sat 19:00 0.26 · good 10.90 · high 30.90 · out of range poor
Sat 20:00 0.24 · good 9.30 · high 30.90 · out of range poor
Sat 21:00 0.24 · good 10.70 · high 30.90 · out of range poor
Sat 22:00 0.24 · good 11.30 · high 30.80 · out of range poor
Sat 23:00 0.22 · good 8.70 · high 30.80 · out of range poor
Sun 00:00 0.22 · good 8.50 · high 30.80 · out of range fair
Sun 01:00 0.26 · good 10.80 · high 30.80 · out of range poor
Sun 02:00 0.28 · good 10.20 · high 30.90 · out of range poor
Sun 03:00 0.32 · good 17.10 · high 30.90 · out of range poor
Sun 04:00 0.32 · good 13.40 · high 31.00 · out of range poor
Sun 05:00 0.32 · good 14.70 · high 31.00 · out of range poor
Sun 06:00 0.32 · good 12.80 · high 31.00 · out of range poor
Sun 07:00 0.30 · good 18.20 · high 31.00 · out of range poor
Sun 08:00 0.30 · good 13.60 · high 31.00 · out of range poor
Sun 09:00 0.28 · good 11.50 · high 31.00 · out of range poor
Sun 10:00 0.28 · good 12.20 · high 31.00 · out of range poor
Sun 11:00 0.26 · good 11.90 · high 31.00 · out of range poor
Sun 12:00 0.26 · good 10.60 · high 31.00 · out of range poor
Sun 13:00 0.26 · good 10.60 · high 31.00 · out of range poor
Sun 14:00 0.26 · good 10.50 · high 30.90 · out of range poor
Sun 15:00 0.26 · good 8.70 · high 30.90 · out of range poor
Sun 16:00 0.28 · good 18.10 · high 30.90 · out of range poor
Sun 17:00 0.28 · good 11.80 · high 30.90 · out of range poor
Sun 18:00 0.30 · good 9.30 · high 30.80 · out of range poor
Sun 19:00 0.30 · good 7.80 · high 30.80 · out of range poor
Sun 20:00 0.30 · good 7.20 · high 30.80 · out of range poor
Sun 21:00 0.30 · good 8.30 · high 30.70 · out of range poor
Sun 22:00 0.30 · good 12.90 · high 30.70 · out of range poor
Sun 23:00 0.30 · good 11.60 · high 30.70 · out of range poor
Mon 00:00 0.30 · good 12.10 · high 30.70 · out of range poor
Mon 01:00 0.30 · good 13.70 · high 30.70 · out of range poor
Mon 02:00 0.32 · good 16.10 · high 30.70 · out of range poor
Mon 03:00 0.32 · good 13.60 · high 30.70 · out of range poor
Mon 04:00 0.34 · good 13.80 · high 30.70 · out of range poor
Mon 05:00 0.36 · good 15.60 · high 30.70 · out of range poor
Mon 06:00 0.38 · high 18.40 · high 30.70 · out of range poor
Mon 07:00 0.38 · high 16.20 · high 30.70 · out of range poor
Mon 08:00 0.36 · good 19.10 · high 30.70 · out of range poor
Mon 09:00 0.36 · good 15.10 · high 30.70 · out of range poor
Mon 10:00 0.38 · high 16.10 · high 30.70 · out of range poor
Mon 11:00 0.40 · high 21.40 · high 30.70 · out of range poor
Mon 12:00 0.42 · high 13.80 · high 30.70 · out of range poor
Mon 13:00 0.44 · high 14.40 · high 30.70 · out of range poor
Mon 14:00 0.48 · high 14.10 · high 30.60 · out of range poor
Mon 15:00 0.50 · high 18.10 · high 30.60 · out of range poor
Mon 16:00 0.48 · high 9.60 · high 30.60 · out of range poor
Mon 17:00 0.48 · high 11.40 · high 30.50 · out of range poor
Mon 18:00 0.46 · high 11.00 · high 30.50 · out of range poor
Mon 19:00 0.44 · high 15.50 · high 30.50 · out of range poor
Mon 20:00 0.44 · high 16.60 · high 30.50 · out of range poor
Mon 21:00 0.42 · high 15.80 · high 30.50 · out of range poor