SnorkelForecast.com

Railay Snorkel Report Today

Thailand · Updated Tue 04:15 (+07) · Source: Snapshot

The skinny

Go in the best window Report Wed 04:07

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

Score: 7.1/10

Best time: Wed 07:00

Main risk: Sea Temperature

Best morning signal: Wed 10:00 (Good).

Best afternoon signal: Wed 12:00 (Good). Peak afternoon wind is about 5.3 m/s.

Email me when it is good

Sunrise

06:15

Sunset

18:46

Water

31.0°C

Max air

31.5°C

Sky

Partly cloudy

35% cloud

Good window is available today

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

3-day planner Best available Show data

3-day planner

Wednesday

✅ good conditions

Main blocker: Sea temperature

Thursday

✅ excellent conditions

Main blocker: Sea temperature

Friday

✅ excellent conditions

Main blocker: Sea temperature

Best available hours

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

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (54 hours)
  • Darkness (26 hours)
  • Waves (5 hours)

Jellyfish drift risk

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

Low · 27/100

Low peak drift risk around Wed 06:00.

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: Wed 22:00

Wed 09:00, Wed 22:00, 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

Sun 21:00 – Wed 21:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.55 around Mon 10:00; 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.

8/24 sampled hours stay at or below 0.36m (range 0.3m to 0.56m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.0 to 5.31m/s).

Tides range from -0.51m to 1.85m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
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
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
good 🌟 Good
fair ⚠️ Fair
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
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
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
Sun 21:00 0.56 · high 4.07 · good 30.30 · good poor
Sun 22:00 0.52 · high 3.04 · good 30.20 · good poor
Sun 23:00 0.48 · high 2.76 · good 30.20 · good poor
Mon 00:00 0.44 · high 3.56 · good 30.20 · good fair
Mon 01:00 0.42 · high 4.93 · good 30.20 · good fair
Mon 02:00 0.38 · high 4.58 · good 30.20 · good good
Mon 03:00 0.36 · good 3.61 · good 30.20 · good good
Mon 04:00 0.34 · good 4.52 · good 30.20 · good fair
Mon 05:00 0.32 · good 5.31 · good 30.20 · good fair
Mon 06:00 0.30 · good 4.81 · good 30.20 · good fair
Mon 07:00 0.30 · good 5.10 · good 30.20 · good fair
Mon 08:00 0.32 · good 4.71 · good 30.20 · good fair
Mon 09:00 0.32 · good 4.77 · good 30.20 · good fair
Mon 10:00 0.36 · good 3.97 · good 30.20 · good fair
Mon 11:00 0.38 · high 3.25 · good 30.20 · good fair
Mon 12:00 0.42 · high 2.21 · good 30.20 · good poor
Mon 13:00 0.44 · high 2.73 · good 30.20 · good poor
Mon 14:00 0.44 · high 3.54 · good 30.20 · good poor
Mon 15:00 0.46 · high 3.99 · good 30.20 · good poor
Mon 16:00 0.46 · high 3.16 · good 30.10 · good poor
Mon 17:00 0.46 · high 2.45 · good 30.10 · good poor
Mon 18:00 0.46 · high 3.73 · good 30.10 · good poor
Mon 19:00 0.42 · high 1.00 · good 30.10 · good poor
Mon 20:00 0.40 · high 1.53 · good 30.00 · good poor
Mon 21:00 0.36 · good 1.20 · good 30.00 · good poor
Mon 22:00 0.34 · good 1.95 · good 30.00 · good poor
Mon 23:00 0.34 · good 4.22 · good 30.00 · good poor
Tue 00:00 0.32 · good 3.15 · good 30.00 · good good
Tue 01:00 0.30 · good 3.36 · good 30.00 · good good
Tue 02:00 0.30 · good 3.20 · good 30.00 · good good
Tue 03:00 0.28 · good 1.90 · good 30.00 · good good
Tue 04:00 0.30 · good 2.07 · good 30.00 · good good
Tue 05:00 0.34 · good 3.63 · good 30.10 · good fair
Tue 06:00 0.36 · good 2.39 · good 30.10 · good good
Tue 07:00 0.36 · good 3.21 · good 30.10 · good fair
Tue 08:00 0.34 · good 3.05 · good 30.10 · good good
Tue 09:00 0.34 · good 2.41 · good 30.10 · good good
Tue 10:00 0.32 · good 2.59 · good 30.10 · good good
Tue 11:00 0.28 · good 2.26 · good 30.10 · good good
Tue 12:00 0.26 · good 1.73 · good 30.10 · good poor
Tue 13:00 0.26 · good 0.90 · good 30.10 · good poor
Tue 14:00 0.24 · good 0.27 · good 30.10 · good poor
Tue 15:00 0.24 · good 0.30 · good 30.10 · good poor
Tue 16:00 0.24 · good 0.87 · good 30.10 · good poor
Tue 17:00 0.22 · good 1.12 · good 30.10 · good poor
Tue 18:00 0.22 · good 0.85 · good 30.10 · good poor
Tue 19:00 0.22 · good 0.46 · good 30.10 · good poor
Tue 20:00 0.20 · good 1.12 · good 30.00 · good poor
Tue 21:00 0.20 · good 0.81 · good 30.00 · good poor
Tue 22:00 0.20 · good 0.65 · good 30.00 · good poor
Tue 23:00 0.20 · good 1.34 · good 30.00 · good poor
Wed 00:00 0.20 · good 0.86 · good 30.00 · good good
Wed 01:00 0.20 · good 1.38 · good 30.00 · good good
Wed 02:00 0.20 · good 1.59 · good 30.00 · good good
Wed 03:00 0.20 · good 3.05 · good 30.10 · good good
Wed 04:00 0.20 · good 2.84 · good 30.10 · good good
Wed 05:00 0.22 · good 3.21 · good 30.10 · good good
Wed 06:00 0.22 · good 2.86 · good 30.20 · good good
Wed 07:00 0.26 · good 3.56 · good 30.50 · out of range good
Wed 08:00 0.30 · good 2.87 · good 30.50 · out of range good
Wed 09:00 0.32 · good 2.84 · good 30.50 · out of range good
Wed 10:00 0.30 · good 2.97 · good 30.50 · out of range good
Wed 11:00 0.30 · good 2.56 · good 30.50 · out of range good
Wed 12:00 0.28 · good 2.09 · good 30.50 · out of range poor
Wed 13:00 0.28 · good 2.00 · good 30.50 · out of range poor
Wed 14:00 0.26 · good 1.27 · good 30.50 · out of range poor
Wed 15:00 0.26 · good 0.69 · good 30.50 · out of range poor
Wed 16:00 0.24 · good 0.25 · good 30.40 · good poor
Wed 17:00 0.24 · good 0.29 · good 30.40 · good poor
Wed 18:00 0.22 · good 0.25 · good 30.40 · good poor
Wed 19:00 0.22 · good 0.11 · good 30.40 · good poor
Wed 20:00 0.20 · good 0.11 · good 30.40 · good poor